I have a set of 4-lug PSE wheels with gray centers and polished lips that aren't going to work for me. These are 15 inch wheels in 8 and 10 inch widths. They are interfering with my brackets from my 3.1 FFR kit (Koni upgrade with the 3-link brackets) and would need spacers or adapters to work. I have upgraded my 1992 axle to discs and don't want to mess around any more with the rear axles. The backspacings are: front=5.0 inches and rear=7.25 inches. These backspacings are measured from wheel mount surface to the outer edge of the inside lip. Fronts appear to be correct for Fox spindles. These wheels are in pretty good shape. They have spinners with dual o-rings. Pictures on request when you send me your internet e-mail address. Call me at 813-431-6888 if you have questions. Located in Tampa, FL area. I am new to this forum and don't know if there are many 4-lug cars out there. I only know FFR thus far.