24 (or 23) 8.5 x 15 mh slicks?

[ShelGame]

I probably should have added that I'm running an A413 with a 3.50 final drive.

[Pat]

568 in Sledgehammer. I thought I saw 6800 going through the traps, but that was a long, long time ago. 12psi in the slick makes a very small overall tire diameter, even at 120+!

What Steve said...we are not working with the advertised diameter when they are holding car up with 8 psi in them.

[contraption22]

Nah, you're losing weight there buddy!

Lol, a few thousandths et wise at most! Lol

[BadAssPerformance]

Good point on advertized diameter, but they do grow high end

[BadFastGTC]

JT, I agree on the growth, but to what degree we cannot tell. Sounds like a Go Pro positioned to record the tire on your car should be on the agenda.

[BadAssPerformance]

Good idea, we need to do that. I know they grow/flex quite a bit. With the 24.5's and stock struts, i could fit my finger in between the strut and tier but they were worn thru the paint shiny, guessing from flop during braking? Also, a couple times got a bad bounce going into 2nd with the 26's and data log RPM looked like a 500+rpm amplitude sine wave!

[turboshad]

I have a log of RPM vs GPS speed but only until the end of 2nd. That should give the actual diameter for any given time assuming no slip but slip should be pretty obvious when the diameter goes down to 12". I should see if I can set up a math channel to calculate it in the log.