Square tire setup on staggered rims?

chrischhorn · 04-02-2013, 11:14 PM

Quote:

Originally Posted by Shamu

I'd never run square in ax. You need as much tire as you can get back there. Min 295 ideally 315. I run 335 rear and 315 fronts now.

If your car isn't turning with stagger its more of a suspension setup issue than tire size.

My car is turning plenty. Right now I'm set up at 255 in front and 275 in rear. I was just trying to see if there was any real benefit to doing a square setup. My car does fine, just about to order a set of tires for dedicated autoX so I wanted to see which would help me the most. If staggered I'm looking at the BFG Rivals at a 295 in the rear and a 275 in front. Or I guess I could run a 315 in the rear and a 275 in front. The Direzzas, the RE-11's, and the RS-3's only come in 275's or 285's for 18's. I don't plan on Hoosiers yet.

threeseventy · 04-02-2013, 11:52 PM

You want responsiveness in AutoX (and all tracking) and while wider is generally better, putting rear-appropriate tire sizes on the front won't allow for the slight stretch that gives you that responsiveness. The moment of inertia will be higher as the sidewall waits to stretch and react each time you turn. To maximize grip go with the sticky RS3's @265 front 285 rear since you have that much whp.

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04-02-2013, 11:52 PM	#2 (permalink)
threeseventy Track Member Join Date: Mar 2011 Location: Huntington Beach, CA Posts: 600 Drives: Opinion Rep Power: 16	You want responsiveness in AutoX (and all tracking) and while wider is generally better, putting rear-appropriate tire sizes on the front won't allow for the slight stretch that gives you that responsiveness. The moment of inertia will be higher as the sidewall waits to stretch and react each time you turn. To maximize grip go with the sticky RS3's @265 front 285 rear since you have that much whp.