Reproduction TiresI recently attended a concours show with my recently '70 Boss 302. The car has all smog and period-correct reproduction parts, including a set of Fire-stone F60x15 Wide Oval tires from a well-known parts supplier. Several people at the show commented that '70 Boss 302s never came with Firestone tires, only Goodyears. Our Boss was built on September 20, 1969. What's your opinion?Bob OlsonSan Diego, CA
The only F60x15 tire available for your Boss 302 when it was built was the Goodyear Polyglas GT.
Two sidewall designs were used. The first is often referred to as "no-size" tires because the tire size wasn't in raised white letters. In late November 1969, "F60x15" was added in raised white letters. With your Boss 302's build date, it would've come with the Goodyear F60x15 "no-size" tires.
The first Firestone F60x15 Wide Ovals were used in the fall of 1970 on the Boss 351 Mustangs. During the '71 model year, Ford used Goodyear and Firestone F60s on the Boss 351 and other Mustangs with the optional 15x7 wheels.