Track season is near. Looking for wheel and tire solution for track. I see lot of wheels, Forgeline, HRE etc but noting about race tires. Does anyone have a solution? Last fall I tracked my car with the OEM Michelins but they overheat after 3-4 laps and the grip goes away. It's a shame to track this car on street tires after years on my '10 RS with N2 slicks.

Best,

 

I'm sure you'll find better tire guru's than myself (since I would just call myself an enthusiast rather than an expert), but the set we did on the 991 GT3, the R101's in 19x9.5 and 19x12 we did with 265/35/19 and 325/30/19 Pirelli Trofeo R tires which you see below. It does looks like there are more options for tires in that size to consider though.



In 265/35/19 and 325/30/19 tire rack shows a lot of R-Compound tires like the Trofeo R of course, Bridgestone's RE-11, and Toyo's R888 which I all have experience with and I can say all have their benefits. For extreme track use though, I see Hoosier lists their R7 slick tire as well if you wanted to take it to that level!

 

I too am looking for more track oriented tires for my RS.

the "potential" problem is that unlike the GT3, the RS comes with staggered diameter tires front to rear (20, 21) and I worry that going to 19" on both will upset the PASM. It's fine on the GT3 as you are downsizing both equally, but may not be fine on the RS.

I know I can turn PASM off, but honesty, given the price of the car and the fact that the PASM will have a much better chance of saving my a$$ if I happen upon oil or anti-freeze on the track surface -- braking with one wheel in ways that I cannot -- leaves me waiting.

Waiting for someone else to try 19"s F&R with the nannies on to see if the PASM gets upset, or waiting for the 20" R7s (supposed to be coming this summer) or other tire maker to come out with appropriately sized 19s&20s so I can stagger in an effort to not lose the safety net. I personally don't want to sink 5 figures into wheels and tires only to find out that the only way to use them is with the safety nets off.

 

oe, you understand my question. I am looking for race tires, not DOT R compounds. Hard to believe that there has been nothing found as yet!

 

Closest I've seen Bob is Hoosier R7 on 19". Have seen zero posts anywhere with true slicks

 

not trying to be a smart-*** but why would you track a $300,000 car why not buy a dedicated race car

 

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I believe that the Michelin 'blue' fits. The tires were sized for the Ferrari 458 Challenge, if I'm not mistaken.

 

generally its a 180k car.
simply because he can.
anyhow thats the way to go! thats what it´s made for.

if you drive with stability / PASM OFF there are for sure possibilities available.
thx Jurrian for the post.

 

Bob, I'm thinking that this car can easily be within 4-5 seconds of a 991 Cup given the power advantage and electronic assists.

Would I be curious about tracking it with slicks? Sure. But would i really want to make a habit out of driving a god-mode cup?

 

PSM, not PASM. Totally different systems ...

 

It may not matter to some, but...
I've read the warranty is toast if you run with slicks. Something about the traction being excessive and over-straining various components. And apparently Porsche has a way of knowing.

No idea if true or not but worth some research..

 

I run 19" Pirelli slicks on my track car (3.8L Cayman) - very happy with them.

They're the 458 challenge OEM tire, 255/650-19 and 305/690-19s. They now have 325/705-19 and 325/725-19 rears which I assume are for the 488 Challenge but probably work well with the RS.

http://www.pirelli.com/tyre/ww/en/mo...eet/slick.html

Only slight negative is you get a prancing horse on them, but can always turn inside out if it bothers you.

 

Its hard to find guys seriously tracking them period.

19" slicks could work, but I don't know anyone that tries them on for correct sizing to keep ABS and SC happy.

AFAIK, fastest tires that will fit on 19" are R7. R7 seems to be a bit stronger than R6 Hoosier.

Id say R7 about 3 seconds faster at Sebring than the Michelins or Dunlops that fit on the OEM wheels.

The Michelins and Dunlops are impressive though, about on par of the shaved Toyo RA1 / Nitto NT-01 we ran back in the day.

 

My starting point would be to replicate the 991 Cup set up. You'll still have to deal with SPASM, ABS, and warranty issues but that's going to be the case for whatever you do in terms of slicks.