Goodyear Polyglas F70-15 tire.  Sold each.  The Firebird platform involved several chassis design changes to include wider based tire and wheel assemblies.  The engineers from GM chassis design working in conjunction with their counterparts at Goodyear, advanced tire development by designing the F70/15 Goodyear Speedway wide tread, and what a tire it is.  Although belted bias construction existed, the belted tires caused the Stingray 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 muscle cars to attain a higher level of performance.

Construction: 2 ply nylon tubeless.  Nylon body plies then and now.  Critical for class judging. Remember, nylon has a memory, which you will feel, and leaves the vehicle environment when the normal tire operating temperature is reached.  Could take somewhat longer in December than July.  Usually five or so continuous miles of driving are all that is needed.

Part Number: WHE-115

JUST A WORD ABOUT THE USE OF NYLON:
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 F70/15 Speedway Wide Treads are unique in bringing you this total O.E. package. Maximum performance on the street or judging field, with Goodyear you’re “Doing It Right”.

Note: How to protect your White Walls and Raised White Lettering
Statement concerning the protection of the white walls:  Upon receipt of your Goodyear wide white wall or raised white letter classic tires, and prior to the fitment to the vehicle, do not allow the black portion of any other tire to encounter the white wall or raised white letters of the tires being installed. Should this happen you will notice a radius or circumferential brown carbon black transfer stain. This stain only happens during the process of tire installation when the tires are unwrapped and most vulnerable. This stain can be successfully removed, however not with conventional white wall cleaners.  Please make sure the tire technician doing the installing of your classic Goodyear tires is fully aware of the proper handling procedures.