1968-1972 C3 Goodyear Speedway Wide Tread Tire F70x15
With the introduction of the C3 in 1968, the engineers from GM chassis design working in conjunction with their counterparts at Goodyear, advanced tire development by designing the F70x15 Goodyear Speedway Wide Tread, and what a tire it is! Although belted bias construction existed, the belted tires caused the Corvette's chassis to begin drifting when cornering at a lower rate of speed. That had to go, the Goodyear Speedway non-belted tire solved the problem. Allowing the Corvette to attain a higher level of performance. The raised white letters version of this tire was only available from the factory from 1969-1972, but will also fit 1968s for a custom look!
Nylon body ply tires were exclusively used on this high performance platform to further enhance impact resistance and heat dissipation - lessons learned from NASCAR, F-1, Indy car, and drag racing. Goodyear F70x15 Speedway Wide Treads are unique in bringing you this total OE package. Maximum performance on the street or judging field, with Goodyear you’re “Doing It Right”.
- Fits 1968-1972 Corvettes
- Fits Front & Rear
- Fits Factory Wheels
- Sold Individually
- Correct for 1969-1972
- 2 Ply Nylon Tubeless
Tire Specs:
- F70x15
- Metric: 205/70x15
- Raised White Letters
- Rim Width: 8"
- Section Width: 8.95"
- Overall Diameter: 26.51"
- Rolling Circumference: 82.5"
- Revs Per Mile: 762
- Tread Width: 6.5"
- Max Load: 1,500lbs @ 32psi
- Weight: 24lbs
The chart below will assist you in selecting the proper tire for your C3 Corvette.
| 1968-1972 C3 Corvette Factory Tire Sidewalls |
| Model Year |
RPO # |
Sidewall |
Cars Produced |
| 1968 |
PT6 |
Redline |
11,686 |
| 1968 |
PT7 |
White Stripe |
9,692 |
| 1969 |
PT6 |
Redline |
5,210 |
| 1969 |
PT7 |
White Stripe |
21,379 |
| 1969 |
PU9 |
White Letters |
2,398 |
| 1970 |
PT7 |
White Stripe |
6,589 |
| 1970 |
PU9 |
White Letters |
7,985 |
| 1971 |
PT7 |
White Stripe |
6,711 |
| 1971 |
PU9 |
White Letters |
12,449 |
| 1972 |
PT7 |
White Stripe |
6.666 |
| 1972 |
PU9 |
White Letters |
16,623
|
Also known under these part numbers: (For reference only)
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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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