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Tire fitment

GMC K15 Suburban Tire Fitment

29 tire sizes verified across 6 kits, 1975–1976. Every figure below is the manufacturer’s own.

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✔ 265/65R18

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

2-Inch Lift Kit with N3 Shocks for 1973-1976 Chevy K10 and GMC K15Rough Country 105N3
- 18x8.5 · 6x5.5 · offset 0mm
- 18x8.5 · 6x5.5 · offset 1mm
- 18x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
265/65R18:18x8.5:6x5.5:+0:- 265/65R18:18x8.5:6x5.5:+1:- 265/65R18:18x9:6x5.5:-12:-
2-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy & GMC 4WDRough Country 18530
- 18x8.5 · 6x5.5 · offset 0mm
- 18x8.5 · 6x5.5 · offset 1mm
- 18x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
265/65R18:18x8.5:6x5.5:+0:- 265/65R18:18x8.5:6x5.5:+1:- 265/65R18:18x9:6x5.5:-12:-

✔ 275/65R18

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

2-Inch Lift Kit with N3 Shocks for 1973-1976 Chevy K10 and GMC K15Rough Country 105N3
- 18x8.5 · 6x5.5 · offset 0mm
- 18x8.5 · 6x5.5 · offset 1mm
- 18x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
275/65R18:18x8.5:6x5.5:+0:- 275/65R18:18x8.5:6x5.5:+1:- 275/65R18:18x9:6x5.5:-12:-
2-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy & GMC 4WDRough Country 18530
- 18x8.5 · 6x5.5 · offset 0mm
- 18x8.5 · 6x5.5 · offset 1mm
- 18x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
275/65R18:18x8.5:6x5.5:+0:- 275/65R18:18x8.5:6x5.5:+1:- 275/65R18:18x9:6x5.5:-12:-

✔ 285/55R20

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

2-Inch Lift Kit with N3 Shocks for 1973-1976 Chevy K10 and GMC K15Rough Country 105N3
- 20x10 · 6x5.5 · offset -25mm · Minor Trimming
- 20x10 · 6x5.5 · offset -19mm · Minor Trimming
- 20x10 · 6x5.5 · offset -18mm · Minor Trimming
- 20x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
285/55R20:20x10:6x5.5:-25:Minor Trimming 285/55R20:20x10:6x5.5:-19:Minor Trimming 285/55R20:20x10:6x5.5:-18:Minor Trimming 285/55R20:20x9:6x5.5:-12:-
2-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy & GMC 4WDRough Country 18530
- 20x10 · 6x5.5 · offset -25mm · Minor Trimming
- 20x10 · 6x5.5 · offset -19mm · Minor Trimming
- 20x10 · 6x5.5 · offset -18mm · Minor Trimming
- 20x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
285/55R20:20x10:6x5.5:-25:Minor Trimming 285/55R20:20x10:6x5.5:-19:Minor Trimming 285/55R20:20x10:6x5.5:-18:Minor Trimming 285/55R20:20x9:6x5.5:-12:-

✔ 285/55R22

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

4-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy/GMC K10/K15 4WDRough Country 11530
- 22x10 · 6x5.5 · offset -25mm
- 22x10 · 6x5.5 · offset -19mm
- 22x10 · 6x5.5 · offset -18mm
what the manufacturer wrote
285/55R22:22x10:6x5.5:-25:- 285/55R22:22x10:6x5.5:-19:- 285/55R22:22x10:6x5.5:-18:-
4-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy/GMC 4WDRough Country 19530
- 22x10 · 6x5.5 · offset -25mm
- 22x10 · 6x5.5 · offset -19mm
- 22x10 · 6x5.5 · offset -18mm
what the manufacturer wrote
285/55R22:22x10:6x5.5:-25:- 285/55R22:22x10:6x5.5:-19:- 285/55R22:22x10:6x5.5:-18:-

✔ 285/65R18

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

2-Inch Lift Kit with N3 Shocks for 1973-1976 Chevy K10 and GMC K15Rough Country 105N3
- 18x8.5 · 6x5.5 · offset 0mm
- 18x8.5 · 6x5.5 · offset 1mm
- 18x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
285/65R18:18x8.5:6x5.5:+0:- 285/65R18:18x8.5:6x5.5:+1:- 285/65R18:18x9:6x5.5:-12:-
2-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy & GMC 4WDRough Country 18530
- 18x8.5 · 6x5.5 · offset 0mm
- 18x8.5 · 6x5.5 · offset 1mm
- 18x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
285/65R18:18x8.5:6x5.5:+0:- 285/65R18:18x8.5:6x5.5:+1:- 285/65R18:18x9:6x5.5:-12:-

✔ 285/70R17

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

2-Inch Lift Kit with N3 Shocks for 1973-1976 Chevy K10 and GMC K15Rough Country 105N3
- 17x8.5 · 6x5.5 · offset 0mm
- 17x8.5 · 6x5.5 · offset 1mm
- 17x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
285/70R17:17x8.5:6x5.5:+0:- 285/70R17:17x8.5:6x5.5:+1:- 285/70R17:17x9:6x5.5:-12:-
2-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy & GMC 4WDRough Country 18530
- 17x8.5 · 6x5.5 · offset 0mm
- 17x8.5 · 6x5.5 · offset 1mm
- 17x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
285/70R17:17x8.5:6x5.5:+0:- 285/70R17:17x8.5:6x5.5:+1:- 285/70R17:17x9:6x5.5:-12:-

✔ 285/75R17

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

4-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy/GMC K10/K15 4WDRough Country 11530
- 17x8.5 · 6x5.5 · offset 0mm
- 17x8.5 · 6x5.5 · offset 1mm
- 17x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
285/75R17:17x8.5:6x5.5:+0:- 285/75R17:17x8.5:6x5.5:+1:- 285/75R17:17x9:6x5.5:-12:-
4-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy/GMC 4WDRough Country 19530
- 17x8.5 · 6x5.5 · offset 0mm
- 17x8.5 · 6x5.5 · offset 1mm
- 17x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
285/75R17:17x8.5:6x5.5:+0:- 285/75R17:17x8.5:6x5.5:+1:- 285/75R17:17x9:6x5.5:-12:-

✔ 285/75R18

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

4-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy/GMC K10/K15 4WDRough Country 11530
- 18x8.5 · 6x5.5 · offset 0mm
- 18x8.5 · 6x5.5 · offset 1mm
what the manufacturer wrote
285/75R18:18x8.5:6x5.5:+0:- 285/75R18:18x8.5:6x5.5:+1:-
4-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy/GMC 4WDRough Country 19530
- 18x8.5 · 6x5.5 · offset 0mm
- 18x8.5 · 6x5.5 · offset 1mm
what the manufacturer wrote
285/75R18:18x8.5:6x5.5:+0:- 285/75R18:18x8.5:6x5.5:+1:-

✔ 295/50R22

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

4-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy/GMC K10/K15 4WDRough Country 11530
- 22x10 · 6x5.5 · offset -19mm · Minor Trimming
- 22x10 · 6x5.5 · offset -18mm · Minor Trimming
what the manufacturer wrote
295/50R22:22x10:6x5.5:-19:Minor Trimming 295/50R22:22x10:6x5.5:-18:Minor Trimming
4-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy/GMC 4WDRough Country 19530
- 22x10 · 6x5.5 · offset -19mm · Minor Trimming
- 22x10 · 6x5.5 · offset -18mm · Minor Trimming
what the manufacturer wrote
295/50R22:22x10:6x5.5:-19:Minor Trimming 295/50R22:22x10:6x5.5:-18:Minor Trimming

✔ 295/60R20

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

4-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy/GMC K10/K15 4WDRough Country 11530
- 20x10 · 6x5.5 · offset -19mm · Minor Trimming
- 20x10 · 6x5.5 · offset -18mm · Minor Trimming
- 20x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
295/60R20:20x10:6x5.5:-19:Minor Trimming 295/60R20:20x10:6x5.5:-18:Minor Trimming 295/60R20:20x9:6x5.5:-12:-
4-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy/GMC 4WDRough Country 19530
- 20x10 · 6x5.5 · offset -19mm · Minor Trimming
- 20x10 · 6x5.5 · offset -18mm · Minor Trimming
- 20x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
295/60R20:20x10:6x5.5:-19:Minor Trimming 295/60R20:20x10:6x5.5:-18:Minor Trimming 295/60R20:20x9:6x5.5:-12:-

✔ 295/70R18

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

4-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy/GMC K10/K15 4WDRough Country 11530
- 18x10 · 6x5.5 · offset -25mm
- 18x10 · 6x5.5 · offset -19mm
- 18x10 · 6x5.5 · offset -18mm
- 18x8 · 6x5.5 · offset 0mm
- 18x8 · 6x5.5 · offset 1mm
- 18x8.5 · 6x5.5 · offset 0mm
- 18x8.5 · 6x5.5 · offset 1mm
- 18x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
295/70R18:18x10:6x5.5:-25:- 295/70R18:18x10:6x5.5:-19:- 295/70R18:18x10:6x5.5:-18:- 295/70R18:18x8:6x5.5:+0:- 295/70R18:18x8:6x5.5:+1:- 295/70R18:18x8.5:6x5.5:+0:- 295/70R18:18x8.5:6x5.5:+1:- 295/70R18:18x9:6x5.5:-12:-
4-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy/GMC 4WDRough Country 19530
- 18x10 · 6x5.5 · offset -25mm
- 18x10 · 6x5.5 · offset -19mm
- 18x10 · 6x5.5 · offset -18mm
- 18x8 · 6x5.5 · offset 0mm
- 18x8 · 6x5.5 · offset 1mm
- 18x8.5 · 6x5.5 · offset 0mm
- 18x8.5 · 6x5.5 · offset 1mm
- 18x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
295/70R18:18x10:6x5.5:-25:- 295/70R18:18x10:6x5.5:-19:- 295/70R18:18x10:6x5.5:-18:- 295/70R18:18x8:6x5.5:+0:- 295/70R18:18x8:6x5.5:+1:- 295/70R18:18x8.5:6x5.5:+0:- 295/70R18:18x8.5:6x5.5:+1:- 295/70R18:18x9:6x5.5:-12:-

✔ 305/45R22

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

2-Inch Lift Kit with N3 Shocks for 1973-1976 Chevy K10 and GMC K15Rough Country 105N3
- 22x10 · 6x5.5 · offset -25mm
- 22x10 · 6x5.5 · offset -19mm
- 22x10 · 6x5.5 · offset -18mm
- 22x12 · 6x5.5 · offset -44mm
what the manufacturer wrote
305/45R22:22x10:6x5.5:-25:- 305/45R22:22x10:6x5.5:-19:- 305/45R22:22x10:6x5.5:-18:- 305/45R22:22x12:6x5.5:-44:-
2-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy & GMC 4WDRough Country 18530
- 22x10 · 6x5.5 · offset -25mm
- 22x10 · 6x5.5 · offset -19mm
- 22x10 · 6x5.5 · offset -18mm
- 22x12 · 6x5.5 · offset -44mm
what the manufacturer wrote
305/45R22:22x10:6x5.5:-25:- 305/45R22:22x10:6x5.5:-19:- 305/45R22:22x10:6x5.5:-18:- 305/45R22:22x12:6x5.5:-44:-

✔ 305/55R20

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

2-Inch Lift Kit with N3 Shocks for 1973-1976 Chevy K10 and GMC K15Rough Country 105N3
- 20x10 · 6x5.5 · offset -25mm · Minor Trimming
- 20x10 · 6x5.5 · offset -19mm · Minor Trimming
- 20x10 · 6x5.5 · offset -18mm · Minor Trimming
- 20x12 · 6x5.5 · offset -44mm · Trimming Required
- 20x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
305/55R20:20x10:6x5.5:-25:Minor Trimming 305/55R20:20x10:6x5.5:-19:Minor Trimming 305/55R20:20x10:6x5.5:-18:Minor Trimming 305/55R20:20x12:6x5.5:-44:Trimming Required 305/55R20:20x9:6x5.5:-12:-
2-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy & GMC 4WDRough Country 18530
- 20x10 · 6x5.5 · offset -25mm · Minor Trimming
- 20x10 · 6x5.5 · offset -19mm · Minor Trimming
- 20x10 · 6x5.5 · offset -18mm · Minor Trimming
- 20x12 · 6x5.5 · offset -44mm · Trimming Required
- 20x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
305/55R20:20x10:6x5.5:-25:Minor Trimming 305/55R20:20x10:6x5.5:-19:Minor Trimming 305/55R20:20x10:6x5.5:-18:Minor Trimming 305/55R20:20x12:6x5.5:-44:Trimming Required 305/55R20:20x9:6x5.5:-12:-

✔ 305/60R18

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

2-Inch Lift Kit with N3 Shocks for 1973-1976 Chevy K10 and GMC K15Rough Country 105N3
- 18x8.5 · 6x5.5 · offset 0mm
- 18x8.5 · 6x5.5 · offset 1mm
- 18x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
305/60R18:18x8.5:6x5.5:+0:- 305/60R18:18x8.5:6x5.5:+1:- 305/60R18:18x9:6x5.5:-12:-
2-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy & GMC 4WDRough Country 18530
- 18x8.5 · 6x5.5 · offset 0mm
- 18x8.5 · 6x5.5 · offset 1mm
- 18x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
305/60R18:18x8.5:6x5.5:+0:- 305/60R18:18x8.5:6x5.5:+1:- 305/60R18:18x9:6x5.5:-12:-

✔ 305/70R17

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

4-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy/GMC K10/K15 4WDRough Country 11530
- 17x8.5 · 6x5.5 · offset 0mm
- 17x8.5 · 6x5.5 · offset 1mm
- 17x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
305/70R17:17x8.5:6x5.5:+0:- 305/70R17:17x8.5:6x5.5:+1:- 305/70R17:17x9:6x5.5:-12:-
4-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy/GMC 4WDRough Country 19530
- 17x8.5 · 6x5.5 · offset 0mm
- 17x8.5 · 6x5.5 · offset 1mm
- 17x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
305/70R17:17x8.5:6x5.5:+0:- 305/70R17:17x8.5:6x5.5:+1:- 305/70R17:17x9:6x5.5:-12:-

✔ 315/70R17

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

4-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy/GMC K10/K15 4WDRough Country 11530
- 17x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
315/70R17:17x9:6x5.5:-12:-
4-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy/GMC 4WDRough Country 19530
- 17x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
315/70R17:17x9:6x5.5:-12:-

✔ 33x12.50R15

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

2-Inch Lift Kit with N3 Shocks for 1973-1976 Chevy K10 and GMC K15Rough Country 105N3
- 15x10 · 6x5.5 · offset -39mm · Trimming Required
- 15x8 · 6x5.5 · offset -19mm
- 15x8 · 6x5.5 · offset -18mm
- 15x8 · 6x5.5 · offset 0mm
- 15x8 · 6x5.5 · offset 1mm
what the manufacturer wrote
33x12.50R15:15x10:6x5.5:-39:Trimming Required 33x12.50R15:15x8:6x5.5:-19:- 33x12.50R15:15x8:6x5.5:-18:- 33x12.50R15:15x8:6x5.5:+0:- 33x12.50R15:15x8:6x5.5:+1:-
2-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy & GMC 4WDRough Country 18530
- 15x10 · 6x5.5 · offset -39mm · Trimming Required
- 15x8 · 6x5.5 · offset -19mm
- 15x8 · 6x5.5 · offset -18mm
- 15x8 · 6x5.5 · offset 0mm
- 15x8 · 6x5.5 · offset 1mm
what the manufacturer wrote
33x12.50R15:15x10:6x5.5:-39:Trimming Required 33x12.50R15:15x8:6x5.5:-19:- 33x12.50R15:15x8:6x5.5:-18:- 33x12.50R15:15x8:6x5.5:+0:- 33x12.50R15:15x8:6x5.5:+1:-

✔ 33x12.50R17

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

2-Inch Lift Kit with N3 Shocks for 1973-1976 Chevy K10 and GMC K15Rough Country 105N3
- 17x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
33x12.50R17:17x9:6x5.5:-12:-
2-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy & GMC 4WDRough Country 18530
- 17x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
33x12.50R17:17x9:6x5.5:-12:-

✔ 33x12.50R18

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

2-Inch Lift Kit with N3 Shocks for 1973-1976 Chevy K10 and GMC K15Rough Country 105N3
- 18x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
33x12.50R18:18x9:6x5.5:-12:-
2-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy & GMC 4WDRough Country 18530
- 18x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
33x12.50R18:18x9:6x5.5:-12:-

✔ 33x12.50R20

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

2-Inch Lift Kit with N3 Shocks for 1973-1976 Chevy K10 and GMC K15Rough Country 105N3
- 20x10 · 6x5.5 · offset -25mm · Minor Trimming
- 20x10 · 6x5.5 · offset -19mm · Minor Trimming
- 20x10 · 6x5.5 · offset -18mm · Minor Trimming
- 20x12 · 6x5.5 · offset -44mm · Trimming Required
- 20x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
33x12.50R20:20x10:6x5.5:-25:Minor Trimming 33x12.50R20:20x10:6x5.5:-19:Minor Trimming 33x12.50R20:20x10:6x5.5:-18:Minor Trimming 33x12.50R20:20x12:6x5.5:-44:Trimming Required 33x12.50R20:20x9:6x5.5:-12:-
2-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy & GMC 4WDRough Country 18530
- 20x10 · 6x5.5 · offset -25mm · Minor Trimming
- 20x10 · 6x5.5 · offset -19mm · Minor Trimming
- 20x10 · 6x5.5 · offset -18mm · Minor Trimming
- 20x12 · 6x5.5 · offset -44mm · Trimming Required
- 20x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
33x12.50R20:20x10:6x5.5:-25:Minor Trimming 33x12.50R20:20x10:6x5.5:-19:Minor Trimming 33x12.50R20:20x10:6x5.5:-18:Minor Trimming 33x12.50R20:20x12:6x5.5:-44:Trimming Required 33x12.50R20:20x9:6x5.5:-12:-

✔ 33x12.50R22

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

2-Inch Lift Kit with N3 Shocks for 1973-1976 Chevy K10 and GMC K15Rough Country 105N3
- 22x10 · 6x5.5 · offset -25mm · Minor Trimming
- 22x10 · 6x5.5 · offset -19mm · Minor Trimming
- 22x10 · 6x5.5 · offset -18mm · Minor Trimming
- 22x12 · 6x5.5 · offset -44mm · Trimming Required
what the manufacturer wrote
33x12.50R22:22x10:6x5.5:-25:Minor Trimming 33x12.50R22:22x10:6x5.5:-19:Minor Trimming 33x12.50R22:22x10:6x5.5:-18:Minor Trimming 33x12.50R22:22x12:6x5.5:-44:Trimming Required
2-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy & GMC 4WDRough Country 18530
- 22x10 · 6x5.5 · offset -25mm · Minor Trimming
- 22x10 · 6x5.5 · offset -19mm · Minor Trimming
- 22x10 · 6x5.5 · offset -18mm · Minor Trimming
- 22x12 · 6x5.5 · offset -44mm · Trimming Required
what the manufacturer wrote
33x12.50R22:22x10:6x5.5:-25:Minor Trimming 33x12.50R22:22x10:6x5.5:-19:Minor Trimming 33x12.50R22:22x10:6x5.5:-18:Minor Trimming 33x12.50R22:22x12:6x5.5:-44:Trimming Required

✔ 35x12.50R15

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

4-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy/GMC K10/K15 4WDRough Country 11530
- 15x8 · 6x5.5 · offset -19mm
- 15x8 · 6x5.5 · offset -18mm
- 15x8 · 6x5.5 · offset 0mm
- 15x8 · 6x5.5 · offset 1mm
what the manufacturer wrote
35x12.50R15:15x8:6x5.5:-19:- 35x12.50R15:15x8:6x5.5:-18:- 35x12.50R15:15x8:6x5.5:+0:- 35x12.50R15:15x8:6x5.5:+1:-
4-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy/GMC 4WDRough Country 19530
- 15x8 · 6x5.5 · offset -39mm · Trimming Required
- 15x8 · 6x5.5 · offset 0mm
- 15x8 · 6x5.5 · offset 1mm
what the manufacturer wrote
35x12.50R15:15x8:6x5.5:-39:Trimming Required 35x12.50R15:15x8:6x5.5:+0:- 35x12.50R15:15x8:6x5.5:+1:-

✔ 35x12.50R20

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

4-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy/GMC K10/K15 4WDRough Country 11530
- 20x10 · 6x5.5 · offset -25mm · Minor Trimming
- 20x10 · 6x5.5 · offset -19mm · Minor Trimming
- 20x10 · 6x5.5 · offset -18mm · Minor Trimming
what the manufacturer wrote
35x12.50R20:20x10:6x5.5:-25:Minor Trimming 35x12.50R20:20x10:6x5.5:-19:Minor Trimming 35x12.50R20:20x10:6x5.5:-18:Minor Trimming
4-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy/GMC 4WDRough Country 19530
- 20x10 · 6x5.5 · offset -25mm · Minor Trimming
- 20x10 · 6x5.5 · offset -19mm · Minor Trimming
- 20x10 · 6x5.5 · offset -18mm · Minor Trimming
what the manufacturer wrote
35x12.50R20:20x10:6x5.5:-25:Minor Trimming 35x12.50R20:20x10:6x5.5:-19:Minor Trimming 35x12.50R20:20x10:6x5.5:-18:Minor Trimming

✔ 35x12.50R22

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

4-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy/GMC K10/K15 4WDRough Country 11530
- 22x10 · 6x5.5 · offset -25mm · Minor Trimming
- 22x10 · 6x5.5 · offset -19mm · Minor Trimming
- 22x10 · 6x5.5 · offset -18mm · Minor Trimming
what the manufacturer wrote
35x12.50R22:22x10:6x5.5:-25:Minor Trimming 35x12.50R22:22x10:6x5.5:-19:Minor Trimming 35x12.50R22:22x10:6x5.5:-18:Minor Trimming
4-Inch Lift Kit with N3 Shocks for 1973–1976 Chevy/GMC 4WDRough Country 19530
- 22x10 · 6x5.5 · offset -25mm · Minor Trimming
- 22x10 · 6x5.5 · offset -19mm · Minor Trimming
- 22x10 · 6x5.5 · offset -18mm · Minor Trimming
what the manufacturer wrote
35x12.50R22:22x10:6x5.5:-25:Minor Trimming 35x12.50R22:22x10:6x5.5:-19:Minor Trimming 35x12.50R22:22x10:6x5.5:-18:Minor Trimming

✔ 37x12.50R17

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

6-Inch Lift Kit with N3 Shocks for Chevy/GMC 4WD (1973-1976)Rough Country 12530
- 17x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
37x12.50R17:17x9:6x5.5:-12:-
6-Inch Front and Rear Spring Lift Kit for Chevy/GMC 4WD (1973-1976)Rough Country 12630
- 17x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
37x12.50R17:17x9:6x5.5:-12:-

✔ 37x12.50R18

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

6-Inch Lift Kit with N3 Shocks for Chevy/GMC 4WD (1973-1976)Rough Country 12530
- 18x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
37x12.50R18:18x9:6x5.5:-12:-
6-Inch Front and Rear Spring Lift Kit for Chevy/GMC 4WD (1973-1976)Rough Country 12630
- 18x9 · 6x5.5 · offset -12mm
what the manufacturer wrote
37x12.50R18:18x9:6x5.5:-12:-

✔ 37x12.50R20

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

6-Inch Lift Kit with N3 Shocks for Chevy/GMC 4WD (1973-1976)Rough Country 12530
- 20x10 · 6x5.5 · offset -25mm · Minor Trimming
- 20x10 · 6x5.5 · offset -19mm · Minor Trimming
- 20x10 · 6x5.5 · offset -18mm · Minor Trimming
- 20x12 · 6x5.5 · offset -44mm · Trimming Required
- 20x9 · 6x5.5 · offset -12mm · Minor Trimming
what the manufacturer wrote
37x12.50R20:20x10:6x5.5:-25:Minor Trimming 37x12.50R20:20x10:6x5.5:-19:Minor Trimming 37x12.50R20:20x10:6x5.5:-18:Minor Trimming 37x12.50R20:20x12:6x5.5:-44:Trimming Required 37x12.50R20:20x9:6x5.5:-12:Minor Trimming
6-Inch Front and Rear Spring Lift Kit for Chevy/GMC 4WD (1973-1976)Rough Country 12630
- 20x10 · 6x5.5 · offset -25mm · Minor Trimming
- 20x10 · 6x5.5 · offset -24mm · Minor Trimming
- 20x9 · 6x5.5 · offset -12mm · Minor Trimming
what the manufacturer wrote
37x12.50R20:20x10:6x5.5:-25:Minor Trimming 37x12.50R20:20x10:6x5.5:-24:Minor Trimming 37x12.50R20:20x9:6x5.5:-12:Minor Trimming

✔ 37x12.50R22

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

6-Inch Lift Kit with N3 Shocks for Chevy/GMC 4WD (1973-1976)Rough Country 12530
- 22x10 · 6x5.5 · offset -25mm
- 22x10 · 6x5.5 · offset -19mm · Minor Trimming
- 22x10 · 6x5.5 · offset -18mm · Minor Trimming
what the manufacturer wrote
37x12.50R22:22x10:6x5.5:-25:- 37x12.50R22:22x10:6x5.5:-19:Minor Trimming 37x12.50R22:22x10:6x5.5:-18:Minor Trimming
6-Inch Front and Rear Spring Lift Kit for Chevy/GMC 4WD (1973-1976)Rough Country 12630
- 22x10 · 6x5.5 · offset -25mm · Minor Trimming
what the manufacturer wrote
37x12.50R22:22x10:6x5.5:-25:Minor Trimming

✔ 37x13.50R15

Listed by the manufacturer on 2 kits for the GMC K15 Suburban.

6-Inch Lift Kit with N3 Shocks for Chevy/GMC 4WD (1973-1976)Rough Country 12530
- 15x8 · 6x5.5 · offset -19mm
- 15x8 · 6x5.5 · offset -18mm
- 15x8 · 6x5.5 · offset 0mm
- 15x8 · 6x5.5 · offset 1mm
what the manufacturer wrote
37x13.50R15:15x8:6x5.5:-19:- 37x13.50R15:15x8:6x5.5:-18:- 37x13.50R15:15x8:6x5.5:+0:- 37x13.50R15:15x8:6x5.5:+1:-
6-Inch Front and Rear Spring Lift Kit for Chevy/GMC 4WD (1973-1976)Rough Country 12630
- 15x8 · 6x5.5 · offset 0mm
- 15x8 · 6x5.5 · offset 1mm
what the manufacturer wrote
37x13.50R15:15x8:6x5.5:+0:- 37x13.50R15:15x8:6x5.5:+1:-

○ Lift height, no published tire size

These kits fit the GMC K15 Suburban 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 C160AKSS-NSkyjacker C160AKSS-N
6 in. lift
what the manufacturer wrote
Nitro Shocks; 6 in. Lift; For Use w/52 in. Rear Springs
Skyjacker C125AKSS-HSkyjacker C125AKSS-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 C160AKSD-NSkyjacker C160AKSD-N
6 in. lift
what the manufacturer wrote
Nitro Shocks; 6 in. Lift; For Use w/56 in. Rear Spring
Skyjacker C160AKSD-MSkyjacker C160AKSD-M
6 in. lift
what the manufacturer wrote
6 in. Lift; For Use w/56 in. Rear Spring; M95 Performance Shocks
Skyjacker C160AKSS-HSkyjacker C160AKSS-H
6 in. lift
what the manufacturer wrote
6 in. Lift; For Use w/52 in. Rear Springs
Skyjacker C160AKSS-MSkyjacker C160AKSS-M
6 in. lift
what the manufacturer wrote
6 in. Lift; For Use w/52 in. Rear Springs; M95 Performance Shocks
Skyjacker C160AKSD-HSkyjacker C160AKSD-H
6 in. lift
what the manufacturer wrote
6 in. Lift; For Use w/56 in. Rear Spring
Skyjacker C168ASkyjacker C168A
6–8 in. lift
what the manufacturer wrote
6-8 in.; 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 | Driveline/Exhaust Modifications May Be Necessary~Transfer Lowering Kit PN[TCL15] May Be Needed; 6-8 in.; Incl. Front/Rear UBolt Kits; Bushing Kit; Rear Block; Brake Line Brackets
Skyjacker C168ASSkyjacker C168AS
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
Skyjacker BUK5589Skyjacker BUK5589
5.5 in. lift
what the manufacturer wrote
5.5 in. Lift
Skyjacker BUK4589Skyjacker BUK4589
4.5 in. lift
what the manufacturer wrote
4.5 in. Lift
Skyjacker BUK3588Skyjacker BUK3588
3.5 in. lift
what the manufacturer wrote
3.5 in. Lift
Skyjacker C180AKSDSkyjacker C180AKSD
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 Blt Kits; Bushing Kit; 2 in. Rear Blocks; Brake Line Bracket; 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 | 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; 8 in. Lift; For Use w/56 in. Rear Springs; Incl. Front/Rear Leaf Springs; Front/Rear U Blt Kits; Bushing Kit; 2 in. Rear Blocks; Brake Line Bracket
Skyjacker C180AKSSkyjacker C180AKS
8 in. lift
what the manufacturer wrote
8 in. Lift; Incl. Front/Rear Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; Brake Line Brackets
Skyjacker C180AKSkyjacker C180AK
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 Brackets; 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 | 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; 8 in. Lift; Incl. Front Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; Rear Blocks; Brake Line Brackets; Rear Add-A-Leafs
Skyjacker C125AKSS-MSkyjacker C125AKSS-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 C125AKSS-NSkyjacker C125AKSS-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 C160AKSD-BSkyjacker C160AKSD-B
6 in. lift
what the manufacturer wrote
6 in. Lift; For Use w/56 in. Rear Spring; Black MAX Shocks
Skyjacker C160AKSS-BSkyjacker C160AKSS-B
6 in. lift
what the manufacturer wrote
6 in. Lift; For Use w/52 in. Rear Springs; Black MAX Shocks
Skyjacker C180AKSD-BSkyjacker C180AKSD-B
8 in. lift
what the manufacturer wrote
8 in. Lift; For Use w/56 in. Rear Springs; Black MAX Shocks
Skyjacker C160AKSSSkyjacker C160AKSS
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~Optional 4 in. Offset Drag Link Available PN[GMDL4]~Lwrng Brkts Must Be Ordered If Equip w/Frt Swy Bar
Skyjacker C140AKSkyjacker C140AK
4 in. lift
what the manufacturer wrote
4 in. Lift; Incl. Front Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; Rear Block; Lwrng Brkts Must Be Ordered If Equip w/Frt Swy Bar
Skyjacker C160AKSSkyjacker C160AKS
6 in. lift
what the manufacturer wrote
6 in. Lift; Incl. Front/Rear Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; Brake Line Brackets
Skyjacker C125AKSS-BSkyjacker C125AKSS-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 C160AKSkyjacker C160AK
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~Optional 4 in. Offset Drag Link Available PN[GMDL4]~Lwrng Brkts Must Be Ordered If Equip w/Frt Swy Bar
Skyjacker C125AKSSSkyjacker C125AKSS
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 C160AKSDSkyjacker C160AKSD
6 in. lift
what the manufacturer wrote
6 in. Lift; For Use w/56 in. Rear Spring; Incl. Front/Rear Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit; Brake Line Brackets; Driveline/Exhaust Modifications May Be Necessary~Optional 4 in. Offset Drag Link Available PN[GMDL4]~Lwrng Brkts Must Be Ordered If Equip w/Frt Swy Bar
Skyjacker C140ASkyjacker C140A
4 in. lift
what the manufacturer wrote
4 in. Lift; Incl. Front/Rear U Bolt Kits; Bushing Kit; Rear Blocks
Skyjacker C180AKSD-NSkyjacker C180AKSD-N
8 in. lift
what the manufacturer wrote
Nitro Shocks; 8 in. Lift; For Use w/56 in. Rear Springs
Skyjacker C180AKSD-MSkyjacker C180AKSD-M
8 in. lift
what the manufacturer wrote
8 in. Lift; For Use w/56 in. Rear Springs; M95 Performance Shocks
Skyjacker C180AKSD-HSkyjacker C180AKSD-H
8 in. lift
what the manufacturer wrote
8 in. Lift; For Use w/56 in. Rear Springs
Skyjacker C140AKSS-BSkyjacker C140AKSS-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 C140AKSDSkyjacker C140AKSD
4 in. lift
what the manufacturer wrote
4 in. Lift; For Use w/56 in. Rear Springs; Incl. Front/Rear Springs; Front/Rear U Bolt Kits; Bushing Kit; Lwrng Brkts Must Be Ordered If Equip w/Frt Swy Bar
Skyjacker C140AKSSkyjacker C140AKS
4 in. lift
what the manufacturer wrote
4 in. Lift; Incl. Front/Rear Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit
Skyjacker C140AKSSSkyjacker C140AKSS
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; Lwrng Brkts Must Be Ordered If Equip w/Frt Swy Bar
Skyjacker C125AKSSkyjacker C125AKS
2.5 in. lift
what the manufacturer wrote
2.5 in. Lift; Incl. Front/Rear Leaf Springs; Front/Rear U Bolt Kits; Bushing Kit
Skyjacker C125AKSkyjacker C125AK
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 C140AKSD-BSkyjacker C140AKSD-B
4 in. lift
what the manufacturer wrote
4 in. Lift; For Use w/56 in. Rear Springs; Incl. Front/Rear Springs; Front/Rear U Bolt Kits; Bushing Kit; Black MAX Shocks
Skyjacker C124ASSkyjacker C124AS
2.5–4 in. lift
what the manufacturer wrote
2.5-4 in. Lift; Incl. Front/Rear U Bolt Kits; Bushing Kit
Skyjacker C125ASkyjacker C125A
2.5 in. lift
what the manufacturer wrote
2.5 in. Lift; Incl. Front/Rear U Bolt Kits; Bushing Kit; Rear Blocks

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.