Lug nuts: seat type has to match the wheel
A lug nut does not clamp the wheel with its threads. It clamps with its seat (the tapered, rounded or flat face that pulls the wheel against the hub) and the seat has to match the wheel's holes exactly.
Fit a conical nut to a wheel machined for a ball seat and the contact patch is a ring instead of a cone. It will feel tight and it will loosen. Aftermarket wheels frequently need different nuts from the factory ones, and the wheel manufacturer publishes which. Spline-drive nuts suit small wheel holes; locking lug nuts replace one per wheel and are worth having on anything expensive.
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Torque, and the fifty-mile recheck
Torque to the manufacturer's figure with a proper wrench, in a star pattern, with the vehicle's weight off the wheel. An impact gun over-torques, which stretches studs and warps rotors.
Re-check after roughly fifty miles on anything newly fitted. New wheels and spacers both settle. Thread pitch and seat type are published numbers; neither is guessable from a photograph. We stock 35 lug nut and hardware parts from 2 brands.
