As a general rule, I've always torqued cast and steel wheels to 65-70 ft lbs and forged wheels to 85-90 ft lbs. Most quality torque wrenches have up to +/- 4% error...cheapies can be off by 15-25%. Check with your owners manual and/or the wheel manufacturer to be sure. SD Steve D'Gerolamo c/o The Parts Co-op (201-262-0412)