How to confirm the seat type of bolts for your new wheels?
There are conical seat, ball seat, flat seat, etc. A 60° Conical Seat is the most common and is found on most aftermarket wheels. But every wheel is different, so please take a check to your new rims. For example, these OZ wheels are designed with a ball lug seat. Typically, for the factory wheels, the seat type of the lug bolts must be the same as the factory wheel bolts. For the aftermarket wheels, the seat type of the lug bolts must be the same as the type of the aftermarket wheels. It is essential that the wheel bolts seat and the wheel lug seat match. Otherwise, the wheel bolts would be bent or damage the wheel.