93 FireHawk 968

I'm planning to compare the Toyo's that Steve references to a lightly used set of Michelins at Daytona next weekend. I'll provide feedback. The Michelins provide great grip quickly but they do exit max adhesion pretty quick. They're certainly not for a racer on a budget, if there is such a thing.

smsarchitects

any updates from those who have tried the Toyos or Pirellis?

93 FireHawk 968

Scott, I used Toyos for a couple of sessions at Daytona. They tale longer to heat up, at least a few laps and never get to the level of stickiness as the Michelins. This is not a huge issue for a long race or one that is not filled with turns. Daytona has 6 what I'll call real turns. I can attest for the need to warm them up following my 2nd session, lap 2 entering the bus stop at about 100mph and turning in at the entrance and the car going sideways fast putting me right into the wall. There was significant driver error in this case but the Michelins shorter time to get up to temp may have covered the error. I ran Michelins for the rest of the weekend and could definitely tell the difference in turns 3, 5 and 6 at turn in.

Another thing is when the tires are cold, the Michelins are still tacky, the Toyos are rock hard. Certainly a different compound.

smsarchitects

thank you.
sorry to hear about the hurt on the car though.
ouch. hope you are OK.

philstireservice

Sorry, to hear about your off. Did you change your set up to accommodate the Toyo's or did you just run the same set up as the Michelins?

smsarchitects

Since I have a set, what is the recommended setup?
More or less camber than Michelins?
Please share...

93 FireHawk 968

Phil, the setup was specific to Daytona's banked turns and based on data collected from a couple of race shops who have experience running 996 Cups there. I'm sure there are subtle setup differences specific to tire mfg but my observation was specific to grip and softness of compound.

HiWind

this seems like the best recent CUP car tire thread of late ....

I know Goodyear cut back on their slicks ... anyone still running those for 996/7 cups?

We run the Pirelli DM (softer than the DH; remember its generally warm here) and
personally found them very good on the speed/duration/cost curve
... yes they fall off quicker than others but last 2 full race days.

We also rate the Dunlops best overall .... ie last longest, slightly slower but only slightly
And Michelins ... expensive and not faster; also not great race day 2.

Keen to hear more on the GY slicks if they're still around. Thanks!

fstockcarrera

I have never run the Dunlop's on a 6 cup, amazing tire on the 964 cup. I would say better than Michelins'.
I think the Yoko's side wall is to soft for the 6cup.

The Pirellis do not have that magic lap like the Michelins, but they are not far off. The Pirellis last for ever, we did a 2:00 flat at the Glen on the 25th HC which is ridiculous. The Michelins are toast at 12 HC if that.

HiWind

I might need to try the Dh instead ... And GoodYears?
I ask as a local agent brings in massive quantity of GY roads and would be able to get us
good prices for a container full of slicks ie 50-60 sets ie all the tires we need for next year for 12 cars and 10 races.

mikew968

I am new to the Pirelli DH, Hoosier slicks and Yoks. The Hoosiers were fast but corded the fronts very quickly on the inside with -3 degrees of camber on the front. (one set went 7hc and the other 1 hc). The Yoks and the Pirellis are great but i prefer the Pirelli because of the better selection of tire sizes. The Pirelli will HC out long before they wear out!

Thanks, Mike

dan212

Pirelli fitment on a 997....

Following this thread for years.

I have been running 250/650 + 300/650 Yoks on my 997 (GTB3). Was thinking of switching to the Pirelli's. I have been hearing so much incredibly positive feedback on Pirelli's from my Cayman friends.

JX2 recommended 245/645+305/645, But I've also seen some comments elsewhere that these were blowing out on banked or cambered tracks. One shop switched to the 265/645 front's and 660 rears. On a Cayman.....

But.... 265 is lot of tire up front - Not sure if I can fit it - and with a 911 maybe such a monster front tire might call for 325 in the rear. Not sure about fitment on my C2 chassis. Any thoughts?

Fitment? Capability of 645 tires?

I could go the JX2 recommended 245/645+305/645 or go bigger with 265/645+305/660. Unsure if a 325/660 would fit.. Heck. Not sure about 265. Not even sure if my front wheels can handle it. Apparently not sure about a lot

Also: I've been running with very little wing for past few years. With a fresh engine I plan on cranking up the downforce === More load on 645 tires.

So this is really a question about the capability of the 645 tires on a downforce car on cambered /banked tracks

Color me mighty confused I guess....

Any thoughts, feedback, opinions are welcome.

stujelly

I was a yok guy on my 2011 cayman and my 08 cup. Great tire, came in fast, super consistent and able to double stint in the long races.

Then I tried the new pirelli a year ago on both cars and never looked back. Takes a few laps to come in, very consistent and must faster. Id say 1 second at sebring alone. Much more grip, but a much narrower razors edge. THe yok you can feel it sliding and there is more time to recover or correct it.

I was at daytona this year and do not recall any rear blow outs on the caymans or street/race 911. I know the RSRs had a few but I think that was on hoosier (could be wrong). I watch it happen and it was an amazing save btw.

The PWC set up for caymans is the 275 front and 315 rear, not sure that will fit on the 911 but would be a lethal combo