Do 5mm Spacers Need Longer Studs BONOSS Forged Wheel Spacers Extended Wheel Bolts Safe Cai

Even if they are 1/4″ spacers, you need longer studs to keep everything in place correctly.

At the minimum, thread engagement length must be equal to or greater than the diameter of the fastener.

In other words, if the bolt is 1/2 inch in diameter, the thread length must be at least 1/2 inch.

Give an example, assuming your stock wheel bolt is 27mm.

When adding a 1/4″ wheel spacer, you need at least 34mm wheel bolts to eliminate potential safety issues.