Five year old article on the "15 inch tire problem"

Yeah I dunno about that. I looked up the last time that Aussie car was talked about, we basically covered all the same drag radial ground as here. As for the bias ply's, per the the Australian Trans-Am series rules "A Hoosier cross-ply tyre is used on all cars to keep them sliding through the corners, and are wrapped around maximum 15” x 8.5” wheels". The old link I had to the Australian Trans-Am series rules is dead, although I know they still run those Hoosiers as part of the deal. Here's the old thread Road Course "Trans Am" Dart-- does anyone recognize this car? What tires????

But that also kinda puts to bed the idea that car is competing on those tires, because if it's competing in anything over there it's not running that set of tires on the track.

It also highlights the problem pointing to certain race series for performance choices. The Aussie trans-am stuff is awesome, but the tire choices are specifically intended to limit performance and keep it entertaining. Like restrictor plate racing in NASCAR, they don't do it because it's faster.



Yep, not DOT legal. Track tires only. Funny they're called "street TD" though if they're not street legal.

Speaking of Aussies, I’ve been watching the current Touring Car Masters racing series on YT and it’s great fun! Quite a few old American Pony/Muscle cars on the circuits, as well as Aussie performance cars and even 4-doors!