1978-1982 C3 Goodyear GT Radial Tire P255/60R15 - Raised White Letter
1978 marked the arrival of true performance tires for the Corvette, beginning with the Goodyear GT Radial P255/60R15 under RPO QBS. This was more than a cosmetic upgrade—Corvette finally had a radial tire designed to match its growing chassis and suspension capabilities. These high-performance P-series radials quickly became the standard for Pace Cars, Silver Anniversary editions, and 1979 models.
This reproduction Goodyear GT Radial captures the exact original appearance and sidewall details—including the iconic “FLEXTEN” marking—while being fully DOT-compliant and modern in safety and performance. Though originally offered only on select models, this tire is dimensionally correct and suitable for any 1978–1982 C3. It fits both front and rear positions and mounts to factory wheels without modification.
Whether you’re building a correct restoration or just want a vintage look backed by modern tire tech, this reproduction remains the tire of choice for discerning C3 owners.
Features
• Fits 1978–1982 C3
• Fits front and rear positions
• OE-style fit for factory 15" wheels
• Raised white letter sidewall
• Reproduced tread depth, pattern, and sidewall markings
• 2-ply polyester sidewall construction
• 2-ply polyester and 4-ply aramid tread construction
• Includes correct “FLEXTEN” sidewall branding
• Originally standard on 1978 Pace Car
• Optional for 1978 Silver Anniversary and 1979 models
Tire Specifications
• Size: P255/60R15
• Section Width: 10.5"
• Overall Diameter: 27.22"
• Tread Width: 7.5"
• Rolling Circumference: 81.56"
• Revs Per Mile: 771
• Rim Width: 8"
• Max Load: 1,796 lbs @ 35 psi
• Tire Weight: 27 lbs
Because Details Matter
No reproduction C3 tire captures the visual and performance history of the Goodyear GT Radial quite like this. It's the correct choice for restorers, NCRS pursuers, or any C3 enthusiast who values period-correct appearance and modern safety.
The chart below will assist you in selecting the proper tire for your C3 Corvette.
| 1978-1982 C3 Corvette Factory Tire Sizes |
| Model Year |
RPO # |
Tire Size |
Cars Produced |
| 1978 |
QBS |
255/60R15 |
18,296 |
| 1978 |
QGR |
225/70R15 |
26,203 |
| 1979 |
QBS |
255/60R15 |
17,920 |
| 1979 |
QGR |
225/70R15 |
29,603 |
| 1980 |
QGB |
225/70R15 |
26,208 |
| 1980 |
QXH |
255/60R15 |
13,140 |
| 1981 |
QGR |
225/70R15 |
21,939 |
| 1981 |
QXH |
255/60R15 |
18,004 |
| 1982 |
QGR |
225/70R15 |
5,932 |
| 1982 |
QXH |
255/60R15 |
19,070 |
Also known under these part numbers: (For reference only)