Just wondering what the max tire size that will fit on them?

Also, what is the best setup for a road course/auto-x?

 

https://www.rx8club.com/rx-8-racing-25/i-just-reported-bigfoot-sighting-143327/

 

Are those for just the 1/4? Or are you using those for auto-x/road courses?

 

AutoX fitment is different than Road Course fitment and sizing.

You'll see most roadcourse guys within the 225-245 range and you want the sidewall as vertical as possible on the wheel. Go any wider than 245 and you lose some top end. 225 works perfectly fine, especially on extreme performance and DOT R compound, since those tires usually run wide.

AutoX, depends on what you're trying to achieve.

 

thanks man....so basically i have to have lke 3 sets or rims/tires if i wanna do road course....drag...and auto x? lol

 

^
No.

A 245 width competitive tire like the Potenza RE-01R, the Yoko Advan AD07 or the new Dunlop Z1 can do well in both AutoX or Roadcourse.
They also get sticky enough to give you a good launch if burning them up is how you prefer to use them at the drags. However, it would be a shame to burn up pricey AD07's next to the water box.

A true Drag Radial has sticky compound, yet soft sidewalls which twist to find launch grip. Such soft sidewalls have virtually no lateral integrity however, which makes them poor tires for AutoX and Roadcourse applications. Nitto DR sidewalls are stiffer than BFG DR's, from my past experience with them.