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Tire fitment

Chevrolet K20 Tire Fitment

31 tire sizes verified across 7 kits, 1977–1986. Every figure below is the manufacturer’s own.

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✔ 275/70R17

Listed by the manufacturer on 2 kits for the Chevrolet K20.

2-Inch Lift Kit for Chevy K20 and GMC K2500 4WD (1977-1987)Rough Country 14030
- 17x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
275/70R17:17x9:8x6.5/8x165.1:-12:-
2-Inch Lift Kit with N3 Shocks for Chevy/GMC 3/4-Ton 4WD (1977–1987)Rough Country 26530
- 17x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
275/70R17:17x9:8x6.5/8x165.1:-12:-

✔ 285/55R20

Listed by the manufacturer on 2 kits for the Chevrolet K20.

2-Inch Lift Kit for Chevy K20 and GMC K2500 4WD (1977-1987)Rough Country 14030
- 20x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
285/55R20:20x9:8x6.5/8x165.1:-12:-
2-Inch Lift Kit with N3 Shocks for Chevy/GMC 3/4-Ton 4WD (1977–1987)Rough Country 26530
- 20x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
285/55R20:20x9:8x6.5/8x165.1:-12:-

✔ 285/55R22

Listed by the manufacturer on 1 kit for the Chevrolet K20.

Rough Country 25530Rough Country 25530
- 22x10 · 8x6.5/8x165.1 · offset -19mm
- 22x10 · 8x6.5/8x165.1 · offset -18mm
what the manufacturer wrote
285/55R22:22x10:8x6.5/8x165.1:-19:- 285/55R22:22x10:8x6.5/8x165.1:-18:-

✔ 285/65R18

Listed by the manufacturer on 2 kits for the Chevrolet K20.

2-Inch Lift Kit for Chevy K20 and GMC K2500 4WD (1977-1987)Rough Country 14030
- 18x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
285/65R18:18x9:8x6.5/8x165.1:-12:-
2-Inch Lift Kit with N3 Shocks for Chevy/GMC 3/4-Ton 4WD (1977–1987)Rough Country 26530
- 18x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
285/65R18:18x9:8x6.5/8x165.1:-12:-

✔ 285/70R17

Listed by the manufacturer on 2 kits for the Chevrolet K20.

2-Inch Lift Kit for Chevy K20 and GMC K2500 4WD (1977-1987)Rough Country 14030
- 17x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
285/70R17:17x9:8x6.5/8x165.1:-12:-
2-Inch Lift Kit with N3 Shocks for Chevy/GMC 3/4-Ton 4WD (1977–1987)Rough Country 26530
- 17x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
285/70R17:17x9:8x6.5/8x165.1:-12:-

✔ 285/75R18

Listed by the manufacturer on 2 kits for the Chevrolet K20.

4-Inch Lift Kit with N3 Shocks for Chevy K20 / GMC K2500 4WDRough Country 25030
- 18x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
285/75R18:18x9:8x6.5/8x165.1:-12:-
Rough Country 25530Rough Country 25530
- 18x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
285/75R18:18x9:8x6.5/8x165.1:-12:-

✔ 295/60R20

Listed by the manufacturer on 1 kit for the Chevrolet K20.

Rough Country 25530Rough Country 25530
- 20x10 · 8x6.5/8x165.1 · offset -19mm · Minor Trimming
- 20x10 · 8x6.5/8x165.1 · offset -18mm · Minor Trimming
- 20x9 · 8x6.5/8x165.1 · offset -12mm
- 20x9 · 8x6.5/8x165.1 · offset 0mm
- 20x9 · 8x6.5/8x165.1 · offset 1mm
what the manufacturer wrote
295/60R20:20x10:8x6.5/8x165.1:-19:Minor Trimming 295/60R20:20x10:8x6.5/8x165.1:-18:Minor Trimming 295/60R20:20x9:8x6.5/8x165.1:-12:- 295/60R20:20x9:8x6.5/8x165.1:+0:- 295/60R20:20x9:8x6.5/8x165.1:+1:-

✔ 295/65R20

Listed by the manufacturer on 3 kits for the Chevrolet K20.

6-Inch Lift Kit with N3 Shocks for Chevy K20 & GMC K25 4WDRough Country 160.20
- 20x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
295/65R20:20x9:8x6.5/8x165.1:-12:-
4-Inch Lift Kit with N3 Shocks for Chevy K20 / GMC K2500 4WDRough Country 25030
- 20x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
295/65R20:20x9:8x6.5/8x165.1:-12:-
Rough Country 25530Rough Country 25530
- 20x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
295/65R20:20x9:8x6.5/8x165.1:-12:-

✔ 295/70R17

Listed by the manufacturer on 2 kits for the Chevrolet K20.

2-Inch Lift Kit for Chevy K20 and GMC K2500 4WD (1977-1987)Rough Country 14030
- 17x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
295/70R17:17x9:8x6.5/8x165.1:-12:-
2-Inch Lift Kit with N3 Shocks for Chevy/GMC 3/4-Ton 4WD (1977–1987)Rough Country 26530
- 17x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
295/70R17:17x9:8x6.5/8x165.1:-12:-

✔ 295/70R18

Listed by the manufacturer on 2 kits for the Chevrolet K20.

4-Inch Lift Kit with N3 Shocks for Chevy K20 / GMC K2500 4WDRough Country 25030
- 18x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
295/70R18:18x9:8x6.5/8x165.1:-12:-
Rough Country 25530Rough Country 25530
- 18x10 · 8x6.5/8x165.1 · offset -25mm
- 18x10 · 8x6.5/8x165.1 · offset -19mm
- 18x10 · 8x6.5/8x165.1 · offset -18mm
- 18x8.5 · 8x6.5/8x165.1 · offset 0mm
- 18x8.5 · 8x6.5/8x165.1 · offset 1mm
- 18x9 · 8x6.5/8x165.1 · offset -12mm
- 18x9 · 8x6.5/8x165.1 · offset 0mm
- 18x9 · 8x6.5/8x165.1 · offset 1mm
what the manufacturer wrote
295/70R18:18x10:8x6.5/8x165.1:-25:- 295/70R18:18x10:8x6.5/8x165.1:-19:- 295/70R18:18x10:8x6.5/8x165.1:-18:- 295/70R18:18x8.5:8x6.5/8x165.1:+0:- 295/70R18:18x8.5:8x6.5/8x165.1:+1:- 295/70R18:18x9:8x6.5/8x165.1:-12:- 295/70R18:18x9:8x6.5/8x165.1:+0:- 295/70R18:18x9:8x6.5/8x165.1:+1:-

✔ 305/55R20

Listed by the manufacturer on 2 kits for the Chevrolet K20.

2-Inch Lift Kit for Chevy K20 and GMC K2500 4WD (1977-1987)Rough Country 14030
- 20x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
305/55R20:20x9:8x6.5/8x165.1:-12:-
2-Inch Lift Kit with N3 Shocks for Chevy/GMC 3/4-Ton 4WD (1977–1987)Rough Country 26530
- 20x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
305/55R20:20x9:8x6.5/8x165.1:-12:-

✔ 305/60R18

Listed by the manufacturer on 2 kits for the Chevrolet K20.

2-Inch Lift Kit for Chevy K20 and GMC K2500 4WD (1977-1987)Rough Country 14030
- 18x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
305/60R18:18x9:8x6.5/8x165.1:-12:-
2-Inch Lift Kit with N3 Shocks for Chevy/GMC 3/4-Ton 4WD (1977–1987)Rough Country 26530
- 18x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
305/60R18:18x9:8x6.5/8x165.1:-12:-

✔ 315/70R17

Listed by the manufacturer on 2 kits for the Chevrolet K20.

4-Inch Lift Kit with N3 Shocks for Chevy K20 / GMC K2500 4WDRough Country 25030
- 17x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
315/70R17:17x9:8x6.5/8x165.1:-12:-
Rough Country 25530Rough Country 25530
- 17x9 · 8x6.5/8x165.1 · offset -12mm
- 17x9 · 8x6.5/8x165.1 · offset 0mm
- 17x9 · 8x6.5/8x165.1 · offset 1mm
what the manufacturer wrote
315/70R17:17x9:8x6.5/8x165.1:-12:- 315/70R17:17x9:8x6.5/8x165.1:+0:- 315/70R17:17x9:8x6.5/8x165.1:+1:-

✔ 33x12.50R15

Listed by the manufacturer on 2 kits for the Chevrolet K20.

2-Inch Lift Kit for Chevy K20 and GMC K2500 4WD (1977-1987)Rough Country 14030
- 15x8 · 8x6.5/8x165.1 · offset 0mm
- 15x8 · 8x6.5/8x165.1 · offset 1mm
what the manufacturer wrote
33x12.50R15:15x8:8x6.5/8x165.1:+0:- 33x12.50R15:15x8:8x6.5/8x165.1:+1:-
2-Inch Lift Kit with N3 Shocks for Chevy/GMC 3/4-Ton 4WD (1977–1987)Rough Country 26530
- 15x8 · 8x6.5/8x165.1 · offset -19mm
- 15x8 · 8x6.5/8x165.1 · offset -18mm
- 15x8 · 8x6.5/8x165.1 · offset 0mm
- 15x8 · 8x6.5/8x165.1 · offset 1mm
what the manufacturer wrote
33x12.50R15:15x8:8x6.5/8x165.1:-19:- 33x12.50R15:15x8:8x6.5/8x165.1:-18:- 33x12.50R15:15x8:8x6.5/8x165.1:+0:- 33x12.50R15:15x8:8x6.5/8x165.1:+1:-

✔ 33x12.50R17

Listed by the manufacturer on 2 kits for the Chevrolet K20.

2-Inch Lift Kit for Chevy K20 and GMC K2500 4WD (1977-1987)Rough Country 14030
- 17x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
33x12.50R17:17x9:8x6.5/8x165.1:-12:-
2-Inch Lift Kit with N3 Shocks for Chevy/GMC 3/4-Ton 4WD (1977–1987)Rough Country 26530
- 17x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
33x12.50R17:17x9:8x6.5/8x165.1:-12:-

✔ 33x12.50R18

Listed by the manufacturer on 2 kits for the Chevrolet K20.

2-Inch Lift Kit for Chevy K20 and GMC K2500 4WD (1977-1987)Rough Country 14030
- 18x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
33x12.50R18:18x9:8x6.5/8x165.1:-12:-
2-Inch Lift Kit with N3 Shocks for Chevy/GMC 3/4-Ton 4WD (1977–1987)Rough Country 26530
- 18x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
33x12.50R18:18x9:8x6.5/8x165.1:-12:-

✔ 33x12.50R20

Listed by the manufacturer on 2 kits for the Chevrolet K20.

2-Inch Lift Kit for Chevy K20 and GMC K2500 4WD (1977-1987)Rough Country 14030
- 20x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
33x12.50R20:20x9:8x6.5/8x165.1:-12:-
2-Inch Lift Kit with N3 Shocks for Chevy/GMC 3/4-Ton 4WD (1977–1987)Rough Country 26530
- 20x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
33x12.50R20:20x9:8x6.5/8x165.1:-12:-

✔ 35x11.50R20

Listed by the manufacturer on 3 kits for the Chevrolet K20.

6-Inch Lift Kit with N3 Shocks for Chevy K20 & GMC K25 4WDRough Country 160.20
- 20x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
35x11.50R20:20x9:8x6.5/8x165.1:-12:-
4-Inch Lift Kit with N3 Shocks for Chevy K20 / GMC K2500 4WDRough Country 25030
- 20x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
35x11.50R20:20x9:8x6.5/8x165.1:-12:-
Rough Country 25530Rough Country 25530
- 20x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
35x11.50R20:20x9:8x6.5/8x165.1:-12:-

✔ 35x12.50R15

Listed by the manufacturer on 3 kits for the Chevrolet K20.

6-Inch Lift Kit with N3 Shocks for Chevy K20 & GMC K25 4WDRough Country 160.20
- 15x10 · 8x6.5/8x165.1 · offset -39mm · Trimming Required
- 15x8 · 8x6.5/8x165.1 · offset -19mm
- 15x8 · 8x6.5/8x165.1 · offset -18mm
- 15x8 · 8x6.5/8x165.1 · offset 0mm
- 15x8 · 8x6.5/8x165.1 · offset 1mm
what the manufacturer wrote
35x12.50R15:15x10:8x6.5/8x165.1:-39:Trimming Required 35x12.50R15:15x8:8x6.5/8x165.1:-19:- 35x12.50R15:15x8:8x6.5/8x165.1:-18:- 35x12.50R15:15x8:8x6.5/8x165.1:+0:- 35x12.50R15:15x8:8x6.5/8x165.1:+1:-
4-Inch Lift Kit with N3 Shocks for Chevy K20 / GMC K2500 4WDRough Country 25030
- 15x8 · 8x6.5/8x165.1 · offset -39mm · Trimming Required
- 15x8 · 8x6.5/8x165.1 · offset 0mm
- 15x8 · 8x6.5/8x165.1 · offset 1mm
what the manufacturer wrote
35x12.50R15:15x8:8x6.5/8x165.1:-39:Trimming Required 35x12.50R15:15x8:8x6.5/8x165.1:+0:- 35x12.50R15:15x8:8x6.5/8x165.1:+1:-
Rough Country 25530Rough Country 25530
- 15x8 · 8x6.5/8x165.1 · offset -19mm
- 15x8 · 8x6.5/8x165.1 · offset -18mm
- 15x8 · 8x6.5/8x165.1 · offset 0mm
- 15x8 · 8x6.5/8x165.1 · offset 1mm
what the manufacturer wrote
35x12.50R15:15x8:8x6.5/8x165.1:-19:- 35x12.50R15:15x8:8x6.5/8x165.1:-18:- 35x12.50R15:15x8:8x6.5/8x165.1:+0:- 35x12.50R15:15x8:8x6.5/8x165.1:+1:-

✔ 35x12.50R16

Listed by the manufacturer on 1 kit for the Chevrolet K20.

6-Inch Lift Kit with N3 Shocks for Chevy K20 & GMC K25 4WDRough Country 160.20
- 16x10 · 8x6.5/8x165.1 · offset -39mm · Trimming Required
- 16x8 · 8x6.5/8x165.1 · offset -12mm
- 16x8 · 8x6.5/8x165.1 · offset -6mm
what the manufacturer wrote
35x12.50R16:16x10:8x6.5/8x165.1:-39:Trimming Required 35x12.50R16:16x8:8x6.5/8x165.1:-12:- 35x12.50R16:16x8:8x6.5/8x165.1:-6:-

✔ 35x12.50R17

Listed by the manufacturer on 3 kits for the Chevrolet K20.

6-Inch Lift Kit with N3 Shocks for Chevy K20 & GMC K25 4WDRough Country 160.20
- 17x9 · 8x6.5/8x165.1 · offset -12mm
- 17x9 · 8x6.5/8x165.1 · offset 0mm
- 17x9 · 8x6.5/8x165.1 · offset 1mm
- 17x9 · 8x6.5/8x165.1 · offset 18mm
- 17x9 · 8x6.5/8x165.1 · offset 20mm
what the manufacturer wrote
35x12.50R17:17x9:8x6.5/8x165.1:-12:- 35x12.50R17:17x9:8x6.5/8x165.1:+0:- 35x12.50R17:17x9:8x6.5/8x165.1:+1:- 35x12.50R17:17x9:8x6.5/8x165.1:+18:- 35x12.50R17:17x9:8x6.5/8x165.1:+20:-
4-Inch Lift Kit with N3 Shocks for Chevy K20 / GMC K2500 4WDRough Country 25030
- 17x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
35x12.50R17:17x9:8x6.5/8x165.1:-12:-
Rough Country 25530Rough Country 25530
- 17x8.5 · 8x6.5/8x165.1 · offset 0mm
- 17x8.5 · 8x6.5/8x165.1 · offset 1mm
- 17x9 · 8x6.5/8x165.1 · offset -12mm
- 17x9 · 8x6.5/8x165.1 · offset 0mm
- 17x9 · 8x6.5/8x165.1 · offset 1mm
what the manufacturer wrote
35x12.50R17:17x8.5:8x6.5/8x165.1:+0:- 35x12.50R17:17x8.5:8x6.5/8x165.1:+1:- 35x12.50R17:17x9:8x6.5/8x165.1:-12:- 35x12.50R17:17x9:8x6.5/8x165.1:+0:- 35x12.50R17:17x9:8x6.5/8x165.1:+1:-

✔ 35x12.50R18

Listed by the manufacturer on 3 kits for the Chevrolet K20.

6-Inch Lift Kit with N3 Shocks for Chevy K20 & GMC K25 4WDRough Country 160.20
- 18x9 · 8x6.5/8x165.1 · offset -12mm
- 18x9 · 8x6.5/8x165.1 · offset 0mm
- 18x9 · 8x6.5/8x165.1 · offset 1mm
- 18x9 · 8x6.5/8x165.1 · offset 18mm
- 18x9 · 8x6.5/8x165.1 · offset 20mm
what the manufacturer wrote
35x12.50R18:18x9:8x6.5/8x165.1:-12:- 35x12.50R18:18x9:8x6.5/8x165.1:+0:- 35x12.50R18:18x9:8x6.5/8x165.1:+1:- 35x12.50R18:18x9:8x6.5/8x165.1:+18:- 35x12.50R18:18x9:8x6.5/8x165.1:+20:-
4-Inch Lift Kit with N3 Shocks for Chevy K20 / GMC K2500 4WDRough Country 25030
- 18x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
35x12.50R18:18x9:8x6.5/8x165.1:-12:-
Rough Country 25530Rough Country 25530
- 18x10 · 8x6.5/8x165.1 · offset -25mm
- 18x10 · 8x6.5/8x165.1 · offset -19mm
- 18x10 · 8x6.5/8x165.1 · offset -18mm
- 18x8.5 · 8x6.5/8x165.1 · offset 0mm
- 18x8.5 · 8x6.5/8x165.1 · offset 1mm
- 18x9 · 8x6.5/8x165.1 · offset -12mm
- 18x9 · 8x6.5/8x165.1 · offset 0mm
- 18x9 · 8x6.5/8x165.1 · offset 1mm
what the manufacturer wrote
35x12.50R18:18x10:8x6.5/8x165.1:-25:- 35x12.50R18:18x10:8x6.5/8x165.1:-19:- 35x12.50R18:18x10:8x6.5/8x165.1:-18:- 35x12.50R18:18x8.5:8x6.5/8x165.1:+0:- 35x12.50R18:18x8.5:8x6.5/8x165.1:+1:- 35x12.50R18:18x9:8x6.5/8x165.1:-12:- 35x12.50R18:18x9:8x6.5/8x165.1:+0:- 35x12.50R18:18x9:8x6.5/8x165.1:+1:-

✔ 35x12.50R20

Listed by the manufacturer on 3 kits for the Chevrolet K20.

6-Inch Lift Kit with N3 Shocks for Chevy K20 & GMC K25 4WDRough Country 160.20
- 20x10 · 8x6.5/8x165.1 · offset -19mm
- 20x10 · 8x6.5/8x165.1 · offset -18mm
- 20x12 · 8x6.5/8x165.1 · offset -44mm
- 20x9 · 8x6.5/8x165.1 · offset -12mm
- 20x9 · 8x6.5/8x165.1 · offset 0mm
- 20x9 · 8x6.5/8x165.1 · offset 1mm
- 20x9 · 8x6.5/8x165.1 · offset 18mm
- 20x9 · 8x6.5/8x165.1 · offset 20mm
what the manufacturer wrote
35x12.50R20:20x10:8x6.5/8x165.1:-19:- 35x12.50R20:20x10:8x6.5/8x165.1:-18:- 35x12.50R20:20x12:8x6.5/8x165.1:-44:- 35x12.50R20:20x9:8x6.5/8x165.1:-12:- 35x12.50R20:20x9:8x6.5/8x165.1:+0:- 35x12.50R20:20x9:8x6.5/8x165.1:+1:- 35x12.50R20:20x9:8x6.5/8x165.1:+18:- 35x12.50R20:20x9:8x6.5/8x165.1:+20:-
4-Inch Lift Kit with N3 Shocks for Chevy K20 / GMC K2500 4WDRough Country 25030
- 20x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
35x12.50R20:20x9:8x6.5/8x165.1:-12:-
Rough Country 25530Rough Country 25530
- 20x10 · 8x6.5/8x165.1 · offset -25mm · Minor Trimming
- 20x10 · 8x6.5/8x165.1 · offset -19mm · Minor Trimming
- 20x10 · 8x6.5/8x165.1 · offset -18mm · Minor Trimming
- 20x12 · 8x6.5/8x165.1 · offset -44mm · Trimming Required
- 20x9 · 8x6.5/8x165.1 · offset -12mm
- 20x9 · 8x6.5/8x165.1 · offset 0mm
- 20x9 · 8x6.5/8x165.1 · offset 1mm
what the manufacturer wrote
35x12.50R20:20x10:8x6.5/8x165.1:-25:Minor Trimming 35x12.50R20:20x10:8x6.5/8x165.1:-19:Minor Trimming 35x12.50R20:20x10:8x6.5/8x165.1:-18:Minor Trimming 35x12.50R20:20x12:8x6.5/8x165.1:-44:Trimming Required 35x12.50R20:20x9:8x6.5/8x165.1:-12:- 35x12.50R20:20x9:8x6.5/8x165.1:+0:- 35x12.50R20:20x9:8x6.5/8x165.1:+1:-

✔ 35x12.50R22

Listed by the manufacturer on 2 kits for the Chevrolet K20.

6-Inch Lift Kit with N3 Shocks for Chevy K20 & GMC K25 4WDRough Country 160.20
- 22x10 · 8x6.5/8x165.1 · offset -25mm
- 22x10 · 8x6.5/8x165.1 · offset -19mm
- 22x10 · 8x6.5/8x165.1 · offset -18mm
- 22x12 · 8x6.5/8x165.1 · offset -44mm
what the manufacturer wrote
35x12.50R22:22x10:8x6.5/8x165.1:-25:- 35x12.50R22:22x10:8x6.5/8x165.1:-19:- 35x12.50R22:22x10:8x6.5/8x165.1:-18:- 35x12.50R22:22x12:8x6.5/8x165.1:-44:-
Rough Country 25530Rough Country 25530
- 22x10 · 8x6.5/8x165.1 · offset -25mm · Minor Trimming
- 22x10 · 8x6.5/8x165.1 · offset -19mm · Minor Trimming
- 22x10 · 8x6.5/8x165.1 · offset -18mm · Minor Trimming
- 22x12 · 8x6.5/8x165.1 · offset -44mm · Trimming Required
what the manufacturer wrote
35x12.50R22:22x10:8x6.5/8x165.1:-25:Minor Trimming 35x12.50R22:22x10:8x6.5/8x165.1:-19:Minor Trimming 35x12.50R22:22x10:8x6.5/8x165.1:-18:Minor Trimming 35x12.50R22:22x12:8x6.5/8x165.1:-44:Trimming Required

✔ 37x12.50R15

Listed by the manufacturer on 1 kit for the Chevrolet K20.

6-Inch Lift Kit with N3 Shocks for Chevy K20 & GMC K25 4WDRough Country 160.20
- 15x10 · 8x6.5/8x165.1 · offset -39mm · Trimming Required
- 15x8 · 8x6.5/8x165.1 · offset -19mm
- 15x8 · 8x6.5/8x165.1 · offset -18mm
- 15x8 · 8x6.5/8x165.1 · offset 0mm
- 15x8 · 8x6.5/8x165.1 · offset 1mm
what the manufacturer wrote
37x12.50R15:15x10:8x6.5/8x165.1:-39:Trimming Required 37x12.50R15:15x8:8x6.5/8x165.1:-19:- 37x12.50R15:15x8:8x6.5/8x165.1:-18:- 37x12.50R15:15x8:8x6.5/8x165.1:+0:- 37x12.50R15:15x8:8x6.5/8x165.1:+1:-

✔ 37x12.50R16

Listed by the manufacturer on 1 kit for the Chevrolet K20.

6-Inch Lift Kit with N3 Shocks for Chevy K20 & GMC K25 4WDRough Country 160.20
- 16x10 · 8x6.5/8x165.1 · offset -39mm · Trimming Required
- 16x8 · 8x6.5/8x165.1 · offset -12mm
- 16x8 · 8x6.5/8x165.1 · offset -6mm
what the manufacturer wrote
37x12.50R16:16x10:8x6.5/8x165.1:-39:Trimming Required 37x12.50R16:16x8:8x6.5/8x165.1:-12:- 37x12.50R16:16x8:8x6.5/8x165.1:-6:-

✔ 37x12.50R17

Listed by the manufacturer on 3 kits for the Chevrolet K20.

6-Inch Lift Kit with N3 Shocks for Chevy K20 & GMC K25 4WDRough Country 160.20
- 17x9 · 8x6.5/8x165.1 · offset -12mm
- 17x9 · 8x6.5/8x165.1 · offset 0mm
- 17x9 · 8x6.5/8x165.1 · offset 1mm
- 17x9 · 8x6.5/8x165.1 · offset 18mm
- 17x9 · 8x6.5/8x165.1 · offset 20mm
what the manufacturer wrote
37x12.50R17:17x9:8x6.5/8x165.1:-12:- 37x12.50R17:17x9:8x6.5/8x165.1:+0:- 37x12.50R17:17x9:8x6.5/8x165.1:+1:- 37x12.50R17:17x9:8x6.5/8x165.1:+18:- 37x12.50R17:17x9:8x6.5/8x165.1:+20:-
6-Inch Lift Kit with N3 Shocks for Chevy/GMC 3/4-Ton 4WD (1977-1987)Rough Country 21030
- 17x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
37x12.50R17:17x9:8x6.5/8x165.1:-12:-
Rough Country 21530Rough Country 21530
- 17x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
37x12.50R17:17x9:8x6.5/8x165.1:-12:-

✔ 37x12.50R18

Listed by the manufacturer on 3 kits for the Chevrolet K20.

6-Inch Lift Kit with N3 Shocks for Chevy K20 & GMC K25 4WDRough Country 160.20
- 18x9 · 8x6.5/8x165.1 · offset -12mm
- 18x9 · 8x6.5/8x165.1 · offset 0mm
- 18x9 · 8x6.5/8x165.1 · offset 1mm
- 18x9 · 8x6.5/8x165.1 · offset 18mm
- 18x9 · 8x6.5/8x165.1 · offset 20mm
what the manufacturer wrote
37x12.50R18:18x9:8x6.5/8x165.1:-12:- 37x12.50R18:18x9:8x6.5/8x165.1:+0:- 37x12.50R18:18x9:8x6.5/8x165.1:+1:- 37x12.50R18:18x9:8x6.5/8x165.1:+18:- 37x12.50R18:18x9:8x6.5/8x165.1:+20:-
6-Inch Lift Kit with N3 Shocks for Chevy/GMC 3/4-Ton 4WD (1977-1987)Rough Country 21030
- 18x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
37x12.50R18:18x9:8x6.5/8x165.1:-12:-
Rough Country 21530Rough Country 21530
- 18x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
37x12.50R18:18x9:8x6.5/8x165.1:-12:-

✔ 37x12.50R20

Listed by the manufacturer on 3 kits for the Chevrolet K20.

6-Inch Lift Kit with N3 Shocks for Chevy K20 & GMC K25 4WDRough Country 160.20
- 20x10 · 8x6.5/8x165.1 · offset -19mm
- 20x10 · 8x6.5/8x165.1 · offset -18mm
- 20x9 · 8x6.5/8x165.1 · offset -12mm
- 20x9 · 8x6.5/8x165.1 · offset 0mm
- 20x9 · 8x6.5/8x165.1 · offset 1mm
- 20x9 · 8x6.5/8x165.1 · offset 18mm
- 20x9 · 8x6.5/8x165.1 · offset 20mm
what the manufacturer wrote
37x12.50R20:20x10:8x6.5/8x165.1:-19:- 37x12.50R20:20x10:8x6.5/8x165.1:-18:- 37x12.50R20:20x9:8x6.5/8x165.1:-12:- 37x12.50R20:20x9:8x6.5/8x165.1:+0:- 37x12.50R20:20x9:8x6.5/8x165.1:+1:- 37x12.50R20:20x9:8x6.5/8x165.1:+18:- 37x12.50R20:20x9:8x6.5/8x165.1:+20:-
6-Inch Lift Kit with N3 Shocks for Chevy/GMC 3/4-Ton 4WD (1977-1987)Rough Country 21030
- 20x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
37x12.50R20:20x9:8x6.5/8x165.1:-12:-
Rough Country 21530Rough Country 21530
- 20x9 · 8x6.5/8x165.1 · offset -12mm
what the manufacturer wrote
37x12.50R20:20x9:8x6.5/8x165.1:-12:-

✔ 37x12.50R22

Listed by the manufacturer on 1 kit for the Chevrolet K20.

6-Inch Lift Kit with N3 Shocks for Chevy K20 & GMC K25 4WDRough Country 160.20
- 22x10 · 8x6.5/8x165.1 · offset -25mm
what the manufacturer wrote
37x12.50R22:22x10:8x6.5/8x165.1:-25:-

✔ 37x13.50R15

Listed by the manufacturer on 3 kits for the Chevrolet K20.

6-Inch Lift Kit with N3 Shocks for Chevy K20 & GMC K25 4WDRough Country 160.20
- 15x8 · 8x6.5/8x165.1 · offset 0mm
- 15x8 · 8x6.5/8x165.1 · offset 1mm
what the manufacturer wrote
37x13.50R15:15x8:8x6.5/8x165.1:+0:- 37x13.50R15:15x8:8x6.5/8x165.1:+1:-
6-Inch Lift Kit with N3 Shocks for Chevy/GMC 3/4-Ton 4WD (1977-1987)Rough Country 21030
- 15x8 · 8x6.5/8x165.1 · offset -39mm · Trimming Required
- 15x8 · 8x6.5/8x165.1 · offset 0mm
- 15x8 · 8x6.5/8x165.1 · offset 1mm
what the manufacturer wrote
37x13.50R15:15x8:8x6.5/8x165.1:-39:Trimming Required 37x13.50R15:15x8:8x6.5/8x165.1:+0:- 37x13.50R15:15x8:8x6.5/8x165.1:+1:-
Rough Country 21530Rough Country 21530
- 15x8 · 8x6.5/8x165.1 · offset -19mm
- 15x8 · 8x6.5/8x165.1 · offset -18mm
- 15x8 · 8x6.5/8x165.1 · offset 0mm
- 15x8 · 8x6.5/8x165.1 · offset 1mm
what the manufacturer wrote
37x13.50R15:15x8:8x6.5/8x165.1:-19:- 37x13.50R15:15x8:8x6.5/8x165.1:-18:- 37x13.50R15:15x8:8x6.5/8x165.1:+0:- 37x13.50R15:15x8:8x6.5/8x165.1:+1:-

○ Lift height, no published tire size

These kits fit the Chevrolet K20 and we know what they lift, but the manufacturer publishes no tire size for them. Check the install guide on the product page before buying tires.

Skyjacker C160BK-HSkyjacker C160BK-H
6 in. lift
what the manufacturer wrote
6 in. Lift; Incl. Front Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; Rear Block; Brake Line Brackets
Skyjacker C125BKS-HSkyjacker C125BKS-H
2.5 in. lift
what the manufacturer wrote
2.5 in. Lift; For Use w/52 in. Rear Springs; Incl. Front/Rear Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit
Skyjacker C140BKS-MSkyjacker C140BKS-M
4 in. lift
what the manufacturer wrote
4 in. Lift; For Use w/52 in. Rear Springs; Incl. Front/Rear Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; M95 Performance Shocks
Skyjacker C125BK-HSkyjacker C125BK-H
2.5 in. lift
what the manufacturer wrote
2.5 in. Lift; Incl. Front Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; Rear Block
Skyjacker C180BKSD-MSkyjacker C180BKSD-M
8 in. lift
what the manufacturer wrote
8 in. Lift; For Use w/56 in. Rear Springs; M95 Performance Shocks
Skyjacker C160BK-MSkyjacker C160BK-M
6 in. lift
what the manufacturer wrote
6 in. Lift; Incl. Front Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; Rear Block; Brake Line Brackets; M95 Performance Shocks
Skyjacker C125BK-NSkyjacker C125BK-N
2.5 in. lift
what the manufacturer wrote
Nitro Shocks; 2.5 in. Lift; Incl. Front Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; Rear Block
Skyjacker C140BKSD-NSkyjacker C140BKSD-N
4 in. lift
what the manufacturer wrote
Nitro Shocks; 4 in. Lift; For Use w/56 in. Rear Springs; Incl. Front/Rear Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit
Skyjacker C125BKS-BSkyjacker C125BKS-B
2.5 in. lift
what the manufacturer wrote
2.5 in. Lift; For Use w/52 in. Rear Springs; Incl. Front/Rear Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; Black MAX Shocks
Skyjacker C180BKSD-HSkyjacker C180BKSD-H
8 in. lift
what the manufacturer wrote
8 in. Lift; For Use w/56 in. Rear Springs
Skyjacker C160BK-NSkyjacker C160BK-N
6 in. lift
what the manufacturer wrote
Nitro Shocks; 6 in. Lift; Incl. Front Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; Rear Block; Brake Line Brackets
Skyjacker C140BKS-NSkyjacker C140BKS-N
4 in. lift
what the manufacturer wrote
Nitro Shocks; 4 in. Lift; For Use w/52 in. Rear Springs; Incl. Front/Rear Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit
Skyjacker C140BKS-HSkyjacker C140BKS-H
4 in. lift
what the manufacturer wrote
4 in. Lift; For Use w/52 in. Rear Springs; Incl. Front/Rear Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit
Skyjacker C140BKSD-HSkyjacker C140BKSD-H
4 in. lift
what the manufacturer wrote
4 in. Lift; For Use w/56 in. Rear Springs; Incl. Front/Rear Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit
Skyjacker C125BKS-MSkyjacker C125BKS-M
2.5 in. lift
what the manufacturer wrote
2.5 in. Lift; For Use w/52 in. Rear Springs; Incl. Front/Rear Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; M95 Performance Shocks
Skyjacker C160BKS-HSkyjacker C160BKS-H
6 in. lift
what the manufacturer wrote
6 in. Lift; For Use w/52 in. Rear Springs
Skyjacker C125BKS-NSkyjacker C125BKS-N
2.5 in. lift
what the manufacturer wrote
Nitro Shocks; 2.5 in. Lift; For Use w/52 in. Rear Springs; Incl. Front/Rear Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit
Skyjacker C125BK-MSkyjacker C125BK-M
2.5 in. lift
what the manufacturer wrote
2.5 in. Lift; Incl. Front Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; Rear Block; M95 Performance Shocks
Skyjacker C180BKS-HSkyjacker C180BKS-H
8 in. lift
what the manufacturer wrote
8 in. Lift; For Use w/52 in. Rr Springs; Incl. Frt/Rr Leaf Springs; Frt/Rr U Bolt Kits; Bushing Kit; Brake Line Bracket
Skyjacker C140BKSD-MSkyjacker C140BKSD-M
4 in. lift
what the manufacturer wrote
4 in. Lift; For Use w/56 in. Rear Springs; Incl. Front/Rear Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; M95 Performance Shocks
Skyjacker C180BKS-MSkyjacker C180BKS-M
8 in. lift
what the manufacturer wrote
8 in. Lift; For Use w/52 in. Rr Springs; Incl. Frt/Rr Leaf Springs; Frt/Rr U Bolt Kits; Bushing Kit; Brake Line Bracket; M95 Performance Shocks
Skyjacker C168BSkyjacker C168B
6–8 in. lift
what the manufacturer wrote
6-8 in. Lift; Incl. Front/Rear UBolt Kits; Bushing Kit; Rear Block; Brake Line Brackets; Driveline/Exhaust Modifications May Be Necessary~Transfer Lowering Kit PN[TCL15] May Be Needed~Fitted Leafs Are Available For Additional Weight Capacity
Skyjacker C168BSSkyjacker C168BS
6–8 in. lift
what the manufacturer wrote
6-8 in.; Incl. Front/Rear UBolt Kits; Bushing Kit; Brake Line Brackets; Driveline/Exhaust Modifications May Be Necessary~Transfer Lowering Kit PN[TCL15] May Be Needed~Fitted Leafs Are Available For Additional Weight Capacity
Skyjacker C160BKSDSkyjacker C160BKSD
6 in. lift
what the manufacturer wrote
6 in. Lift; For Use w/56 in. Rear Springs; Incl. Front/Rear Springs; Front/Rear U Bolt Kits; Bushing Kit; Brake Line Brackets; Driveline/Exhaust Modifications May Be Necessary~Transfer Lowering Kit PN[TCL15] May Be Needed~Must Have 3 Bolt Steering Knuckle~Optional 4 in. Offset Drag Link Available PN[GMDL4]~Lwrng Brkts Must Be Ordered If Equip w/Frt Swy Bar~Veh. w/4 Blt Strng Knckl Use PN[GMDL4] NOT PN[CA100]~Fitted Leafs Are Available For Additional Weight Capacity | Driveline/Exhaust Modifications May Be Necessary~Transfer Lowering Kit PN[TCL15] May Be Needed~Must Have 3 Bolt Steering Knuckle~Optional 4 in. Offset Drag Link Available PN[GMDL4]~Lwrng Brkts Must Be Ordered If Equip w/Frt Swy Bar~Veh. w/4 Blt Strng Knckl Use PN[GMDL4] NOT PN[CA100]~Fitted Leafs Are Available For Additional Weight Capacity; 6 in. Lift; For Use w/56 in. Rear Springs; Incl. Front/Rear Springs; Front/Rear U Bolt Kits; Bushing Kit; Brake Line Brackets
Skyjacker BUK5589Skyjacker BUK5589
5.5 in. lift
what the manufacturer wrote
5.5 in. Lift; 6 Lug Wheel
Skyjacker C160BKSSkyjacker C160BKS
6 in. lift
what the manufacturer wrote
6 in. Lift; For Use w/52 in. Rear Springs; Incl. Front/Rear Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; Brake Line Brackets; Driveline/Exhaust Modifications May Be Necessary~Transfer Lowering Kit PN[TCL15] May Be Needed~Must Have 3 Bolt Steering Knuckle~Optional 4 in. Offset Drag Link Available PN[GMDL4]~Veh. w/4 Blt Strng Knckl Use PN[GMDL4] NOT PN[CA100]~Fitted Leafs Are Available For Additional Weight Capacity
Skyjacker BUK5592Skyjacker BUK5592
5.5 in. lift
what the manufacturer wrote
5.5 in. Lift; 8 Lug Wheel
Skyjacker C160BKSkyjacker C160BK
6 in. lift
what the manufacturer wrote
6 in. Lift; Incl. Front Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; Rear Block; Brake Line Brackets; Driveline/Exhaust Modifications May Be Necessary~Transfer Lowering Kit PN[TCL15] May Be Needed~Optional 4 in. Offset Drag Link Available PN[GMDL4]~Lwrng Brkts Must Be Ordered If Equip w/Frt Swy Bar~Fitted Leafs Are Available For Additional Weight Capacity
Skyjacker BUK4589Skyjacker BUK4589
4.5 in. lift
what the manufacturer wrote
4.5 in. Lift; 6 Lug Wheel
Skyjacker BUK3588Skyjacker BUK3588
3.5 in. lift
what the manufacturer wrote
3.5 in. Lift; 6 Lug Wheel
Skyjacker C180BKSD-NSkyjacker C180BKSD-N
8 in. lift
what the manufacturer wrote
Nitro Shocks; 8 in. Lift; For Use w/56 in. Rear Springs
Skyjacker C180BKSkyjacker C180BK
8 in. lift
what the manufacturer wrote
8 in. Lift; Incl Front Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; Rear Blocks; Brake Line Bracket; Rear Add-A-Leafs; Driveline/Exhaust Modifications May Be Necessary~Transfer Lowering Kit PN[TCL15] May Be Needed~Optional 4 in. Offset Drag Link Available PN[GMDL4]~Lwrng Brkts Must Be Ordered If Equip w/Frt Swy Bar~Fitted Leafs Are Available For Additional Weight Capacity
Skyjacker C180BKSSkyjacker C180BKS
8 in. lift
what the manufacturer wrote
8 in. Lift; For Use w/52 in. Rear Springs; Incl. Front/Rear Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; Brake Line Bracket; Driveline/Exhaust Modifications May Be Necessary~Transfer Lowering Kit PN[TCL15] May Be Needed~Must Have 3 Bolt Steering Knuckle~Optional 4 in. Offset Drag Link Available PN[GMDL4]~Lwrng Brkts Must Be Ordered If Equip w/Frt Swy Bar~Veh. w/4 Blt Strng Knckl Use PN[GMDL4] NOT PN[CA100]~Fitted Leafs Are Available For Additional Weight Capacity
Skyjacker C180BKSDSkyjacker C180BKSD
8 in. lift
what the manufacturer wrote
8 in. Lift; For Use w/56 in. Rear Springs; Incl. Front/Rear Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; 2 in. Rear Blocks; Brake Line Brackets; Must Have 3 Bolt Steering Knuckle~Veh. w/4 Blt Strng Knckl Use PN[GMDL4] NOT PN[CA100] | Must Have 3 Bolt Steering Knuckle~Veh. w/4 Blt Strng Knckl Use PN[GMDL4] NOT PN[CA100]; 8 in. Lift; For Use w/56 in. Rear Springs; Incl. Front/Rear Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; 2 in. Rear Blocks; Brake Line Brackets
Skyjacker C140BKSD-BSkyjacker C140BKSD-B
4 in. lift
what the manufacturer wrote
4 in. Lift; For Use w/56 in. Rear Springs; Incl. Front/Rear Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; Black MAX Shocks
Skyjacker C180BKS-NSkyjacker C180BKS-N
8 in. lift
what the manufacturer wrote
Nitro Shocks; 8 in. Lift; For Use w/52 in. Rr Springs; Incl. Frt/Rr Leaf Springs; Frt/Rr U Bolt Kits; Bushing Kit; Brake Line Bracket
Skyjacker C140BKS-BSkyjacker C140BKS-B
4 in. lift
what the manufacturer wrote
4 in. Lift; For Use w/52 in. Rear Springs; Incl. Front/Rear Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; Black MAX Shocks
Skyjacker C160BK-BSkyjacker C160BK-B
6 in. lift
what the manufacturer wrote
6 in. Lift; Incl. Front Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; Rear Block; Brake Line Brackets; Black MAX Shocks
Skyjacker C180BK-BSkyjacker C180BK-B
8 in. lift
what the manufacturer wrote
8 in. Lift; Incl Front Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; Rear Blocks; Brake Line Bracket; Rear Add-A-Leafs; Black MAX Shocks
Skyjacker C160BKSD-BSkyjacker C160BKSD-B
6 in. lift
what the manufacturer wrote
6 in. Lift; For Use w/56 in. Rear Springs; Incl. Front/Rear Springs; Front/Rear U Bolt Kits; Bushing Kit; Brake Line Brackets; Black MAX Shocks

How to read this table

Every combination here is one the manufacturer published for that kit on this vehicle — tire size, wheel width, bolt pattern, offset and any trimming note, exactly as they wrote it. Open “what the manufacturer wrote” under any kit and you will see the source string the figures came from.

We do not interpolate. A kit verified for a 35 tells you nothing certain about a 33 — clearance depends on backspacing and turning radius, not on the tire being smaller — so only sizes the manufacturer actually listed appear. A size missing from this page means nobody has published it, not that it will not fit.