Typically when early Volkswagens are lowered it changes the caster angle from positive to negative which will cause the vehicle to wander. Caster Shims when installed correctly will help improve front end geometry restoring positive caster on your lowered vehicle which affects the vehicles straight-line stability. The longer Caster Shim bolts provide proper thread grip at pan head.
Application: Volkswagen Bug, Karmann Ghia 1956 Thru 1977 with beam front ends