Well there worth the money if you need a wheel spacer. If you dont than no, not worth the money, and basically pointless. They just sit between the wheel and the hub to space the wheel out towards the fenders of the car more. The negative is that if you use more than a 1/4" spacer you will need longer wheel studs. Unless you need them to fit a wheel on the car so they dont rub the suspension they are useless. Say if you had stock wheels with the high offset a 1/4" spacer would allow you to run a wider tire without rubbing issues.