C3 1968-1982 Corvette Wheel & Tire Reference Guide When purchasing new tires or wheels for your 1968-1982 Corvette, always refer to the measurements of the wheels and tires that came on your Corvette from the assembly plant. You can be certain that the information on this chart is accurate and correct for C3 Corvettes. When choosing custom or updated wheels, view the clearly marked fi tment years and sizes to ensure the best ride and continued safety while cruising! Year Model Wheel Location Wheel Size Offset Backspacing Tire Size 1968 Corvette-Rally Front/Rear 15" x 7" ( - ) 7mm 3.22" F70 x 15 1969 Corvette-Rally Front/Rear 15" x 8" ( - ) 13mm 3.5" F70 x 15 1970 Corvette-Rally Front/Rear 15" x 8" ( - ) 13mm 3.5" F70 x 15 1971 Corvette-Rally Front/Rear 15" x 8" ( - ) 13mm 3.5" F70 x 15 1972 Corvette-Rally Front/Rear 15" x 8" ( - ) 13mm 3.5" F70 x 15 1973 Corvette-Rally Front/Rear 15" x 8" ( - ) 13mm 3.5" GR70 x 15B 1974 Corvette-Rally Front/Rear 15" x 8" ( - ) 13mm 3.5" GR70 x 15B 1975 Corvette-Rally Front/Rear 15" x 8" ( - ) 13mm 3.5" GR70 x 15B 1976 Corvette-Rally & Optional Aluminum Front/Rear 15" x 8" ( - ) 13mm 3.5" GR70 x 15B 1977 Corvette-Rally & Optional Aluminum Front/Rear 15" x 8" ( - ) 13mm 3.5" GR70 x 15B 1978 Corvette-Rally & Optional Aluminum Front/Rear 15" x 8" ( - ) 13mm 3.5" P225/70R-15, P255/60R-15 1979 Corvette-Rally & Optional Aluminum Front/Rear 15" x 8" ( - ) 13mm 3.5" P225/70R-15, P255/60R-15 1980 Corvette-Rally & Optional Aluminum Front/Rear 15" x 8" ( - ) 13mm 3.5" P225/70R-15, P255/60R-15 1981 Corvette-Rally & Optional Aluminum Front/Rear 15" x 8" ( - ) 13mm 3.5" P225/70R-15, P255/60R-15 1982 Corvette-Rally & Optional Aluminum Front/Rear 15" x 8" ( - ) 13mm 3.5" P225/70R-15, P255/60R-15
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