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;) Sure, I get it. But I do think, in that context, that concern about wheel diameter as an absolute max tolerance is less worrisome...

The only reason that I even thought about it (with respect to width OR diameter) was the change. But when I DID think about it, I...

The only reason that I even thought about it (with respect to width OR diameter) was the change. But when I DID think about it, I...

Interesting COA. Better than the usual 6.11/Appendix P stuff. 🍿

"Rim width and diameter are is absolute maximums." This is an edit to GCR Appendix G, so not affecting Prod specifically. And since it...

Finals 2025 October CRB Minutes 2025 October Technical Bulletins 2025 October COAs

yea, I am carrying around old 2nd hand H20's but they are getting cracks in the sidewall rubber, and i am too scared to actually look...

If you're considering value at the expense of some performance, and the 205 is a possibility, I'd look into purchasing some wet SMW spec...

need a new set of rains 280z ITS car ( i know its a Production car board ... ) car runs 225 45-15 R7's would you get 205 H2 0's...

...aaaand, it's gone.

Well here's my chance to win the Runoffs. Come in 23rd and protest everyone on front of me based on a poorly worded wheel dimension...

As the title states. I’m selling for Chris Foley, it was on his FP car some years ago. Does not include the plastic mounting bracket...

4 Hoosier Slicks - 215 / 580 R15 (MS) - 3 heat cycles - $300 Available @ Runoffs - Mid-Ohio 10/11 - 10/12 Nelson Ledges 10/25 -...

A little bit of language evolution regarding wheel regulations, is this perhaps some foreshadowing and structuring for a forthcoming...

The best thing would be if they got rid of the bogus 18 class number and went back to a week long Runoffs event. Practice Monday, Qual...