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If I have aftermarket wheels and lug-nuts should I not be tightening them to the Ford specs? I've noticed my lug-nuts are ever so slightly twisted from torquing them to 160-165 lbs. I have pro-comp 6059-1079's and whatever lug-nuts they gave me with them.
It never occurred to me that the torque specs might be different because the lug-nuts are a different composition metal.
Most people will torque to 150 lbs.because they don't have a torque wrench that goes to 165 lbs. The proper torque is 165 lbs on factory wheels. I still have to get a 200 lb. torque wrench.....
Ford book for 99 super duty is 148 lbs ft..srw..Just looked. I have 2 wrenches that go to 250 and one to 400 lb ft. They may have raised it for later years..
I stand corrected the factory torque spec for mine was 150 lbs not 140. Either way I don't see where people are getting 165? Maybe it depends on which rims you have, mine were 18x8