9x29.5 3056st on 69 camaro

[Rory McNeil]

I can`t help with the Camaro question, but I just mounted a new pair of 3056ST`s for my Mustang, and on a 9" wide rim, at 12 psi, the circumferance was 95". This was with a steel tape measure, so the number may be off a tad, but that does seem a bit taller than the last set. According to the code on the sidewall, my tires were made on the 40th week of 2009, if that helps.