ECCPP 72.56mm Hubcentric Wheel Spacers 2X 15mm & 2X 20mm 5x120MM(72.56) Staggered Kit Fit for 325i 325xi 328i 328xI 330i 330xI 335d 335i 335ix 335xi M3 Z3 M-Coupe/Roadster(12x1.5Lug Bolts) WHEEL SPACERS 5 LUG:REQUIRED that youCheck your vehicle compatibility in Product Description BEFORE buying 5 LUG WHEEL SPACERS:2PCS 15mm & 2PCS 20mm THICK 5x120MM(72.56) Hubcentric Wheel Spacers 5X120 TO 5X120 WHEEL SPACERS:NNER DIAMETER: 72.56MM THREAD PITCH: 12x1.5 Lug Bolt Length: (10) 50mm WHEEL SPACERS 5X120:Please be sure to take the proper measurements before making your purchase these 5x120 spacers. The Buyer is responsible for making sure that they choose the correct thickness so as to not cause the wheel/tire to rub against the fender of the vehicle. Copy the following link to your address bar - //d3d71ba2asa5oz.cloudfront.net/12001428/images/measure_spacer.jpg 5X120mm TO 5X120mm WHEEL SPACER SAFETY:The wheel spacers 20mm Made from the best true T-6 billet aluminum,with heat treated and hardened 10.9 grade bolts pre-installed.The anodized surface provides additional resistance to corrosion.Exceptionally sturdy and lightweight compared to steel spacer. Before installing wheel spacer adapters, please make sure that you have bought the compatible wheel spacer adapters for your vehicle. You can easily check by placing one wheel spacer adapter onto the rim, screw in the nuts manually, if you can do that without feeling any restriction, then you have got the appropriate wheel spacer adapter for your vehicle. If your OEM studs are longer than the spacer&#039;s thickness, you need to shorten the lug studs by grinding them down or replacing with shorter ones.