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Need help with AEM. Anyone one at Runnpffs who could help?

1st one in my mind is 2007 HP at Topeka. Brian Linn, Tom Feller and Ron Bartell Qualified top 3 with VW of Don Barrack just behind...

On the eve of Runoffs Qualification Day 1, nominations are open for the 2026 class of the SCCA H-Production Hall Of Fame! The nomination...

1980 D/Production race. Doc Bundy in the Holbert Porsche 924 versus Dennis Wilson in a Triumph TR-6. Real back and forth.

Wouldnt the easy button be to make the width measurable by something easy like the rim width calipers the tire shops use when balancing...

It's a poorly written rule. Where on the wheel is the measurement to be taken?

Concur. Not clear how we're going to manage this if/when it comes up...I hope we use some reason.

I agree 100% that any actual physical discrepancy (ie cheating) would be width, not diameter. And of the two, width seems harder to...

;) 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...