[2010REDSS]

Originally Posted by seanblurr

Can you post up some data on those after the weekend, please? Interested in tire pressures, temps and what your camber is. I have a set that has been sitting in my garage I may try for a weekend but I'm concerned about pressures with how heavy this car is.

Will do. Really hoping the Pirellis work well. Road Atlanta can be really hard on tires, will be a good test.

Originally Posted by RUQWIKR

The 345 R7 is just about the same rollout as the 325 G3R and is only ~3mm wider. I went to a Hoosier dealer and measured the 295, 315, 325, & 345. None of them matched up with what Hoosier says on the website. The thread linked by 2010REDSS is very informative showing the 315 a bit wider than the 305 (as it should be) but the 325 R7 smaller (which it should not be). That's why I think 345's will be the way to go in the rear.

Yep, I was surprised the 325's were narrower than the Goodyears. The 345's would work in the rear.

Originally Posted by Dwille

Thanks for all the info. I may try these later this year. Were you running the factory suggested toe settings front and rear? (I saw the camber notes in the thread...).

Using track recommended alignment for all settings.

Originally Posted by OminouSS

The best fitting DH are the 305's by Pirelli. They do quite well at 30psi hot.

I have 4 Pirelli scrubs, 315/705/18 in the garage that I've never used. You want them, bring me a couple 4 packs of NE DIPA and I'll save you $600. I won't be using them.

In person. No shipping.

Thanks for the note on hot pressure.... appreciated. The Hoosiers run higher pressures than that, and I was going to have to experiment with psi for the Pirellis. I'll use 30psi hot as a starting point and see how it goes. Do they get greasy higher than 30? My FFR GTM was only a 2,400lb car so I knew the Camaro would need higher hot pressures.