PSR G5 Titanium Wheel/Racing Nuts M12 x 1.5PSR G5 Titanium Wheel Racing Nuts M12 x 1. 5 PSR Superlite Titanium wheel lug nuts and Titanium wheel lug bolts are not only corrosion resistant but also much stronger and 50% lighter than steel lug nuts which results in a drastic decrease in rotational mass of the wheel. Lower weight in rotating parts such as lug bolts is over 8 times more effective than in a stationary part. Hence a 5 pound reduction in rotating mass is similar to removing 40 pounds