ECCPP 4PCS Wheel Spacers Adapters 1"(25mm) 5 Lug 5x4.75 for Chevrolet Chevy Corvette Camaro S10 GMC S15 Jimmy Pontiac Firebird GTO with 12 x 1.5 STUDS 5 LUG WHEEL SPACER FITMENTFit for 1979 1980 1981 1982 1983 1984 1985 Buick Riviera,Fit for 1981 Pontiac Firebird,Fit for 1973 Pontiac GTO,Fit for 1996 1997 1998 1999 2000 2001 2002 Pontiac Firebird,Fit for 1979 1980 1981 1982 1983 1984 1985 Cadillac Eldorado WHEEL SPACER 5x4.75 PARAMETERThickness: 1" Vehicle Bolt Pattern 5x4.75 Wheel Bolt Pattern 5x4.75 Center Bore 87.1mm Wheel Studs 12x1.5 1 inch WHEEL SPACER 5 LUG SAFETYThe Wheel spacers are made from the best true T-6 billet aluminum,to ensure the highest level of performance and durability for your vehicles.The studs of our Wheel spacers are grade 10.9,heat treated and hardened heavy duty studs for safety. 5X4.75 WHEEL SPACERS PLEASE ATTENTIONREQUIRED that you Check your vehicle compatibility in Product Description BEFORE buying these 5x4.75 wheel spacers. WHEEL SPACERS 5X4.75 TO 5X4.75 ADVANTAGEDesigned to move the wheels further out from the hub, giving your vehicle a more aggressive stance and allows for better handling characteristics.They also increase tire clearance, fix brake caliper clearance issues,allow installation of lift/lowering kits and wider,larger,or high traction tires. 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.