| no vibration as it is perfectly centered (and assuming that they are well balanced like the pulley). Should you experience vibration, it is mostly coming from your out of rounded/balanced tires and wheels. The wheels are extended outboard and resulting higher stablility in strainght and corner. Wheel flying off is usually caused by insufficient thread counts from the lug nuts or inproper torque on the lug nuts. Unlike using thicker spacer without longer studs, the wheel adaptor's lug nuts lock enough threads in, and the studs on the adaptor are long enough for the wheel lug nuts to lock in. Oh and the front stock wheels sit more flush to the fender lip and look more aggressive :-)
Erick
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