The centering of the wheel is only possible with the wheelbolts! Therefore, it may be necessary to do wheel balancing on the car - to avoid possible vibration.
Spacers can only be used with wheels that have cut-outs (facing the hub) to clear the stock studs. Please check as follows: Original stud length (i.e. 35mm) minus spacer-thickness (i.e. 25mm) = 10mm...