I’m expecting to see this system built into the dash display of the 992 GT3 or RS

Just to follow up on this. I got the Dunlops. Would have liked to have tried Trofeos, but couldn't get the rears in time.

Ran 7 sessions on track today. Impressed with grip, overall, but they didn't seem as stable as the Michellins in extreme straight line braking - at least not at first - could have just been that brand new tire thing, but I did notice it a few times during the day.

When the rears get overheated (38PSI) they seem to let go more so than the MPSC2 did.

Just though I'd share my 2 cents.

Vivian

Exactly, they don’t feel as crisp as MPSC2 N2. Almost like they are grainy.
38 is the limit, try to stay below 36 but with the Michelin’s fall off a cliff at 34PSI.

I'm relatively new to tracking, so am seeking input on heat cycles.

I've now run three track days on the Dunlops for a total of 20 sessions and 435 track miles (approximately 20 mins each session, but a few at 30 mins). As of yesterday (day three), the rears didn't inspire any real confidence in their grip and I was constantly lowering pressures to find it. In the last session I started with the rears super-low and they got up to about 33/34 hot. It seemed as if the sidewalls were not happy with such a low pressure, but it did actually give me some more grip until they got to about 33psi.

I'm assuming that these rears have cycled out? For what it's worth, the fronts seem fine, with no perceptible loss of grip.

I'm thinking to go back to the MPSC2, but am also looking at availability of the Pirelli Trofeo R. In reality I'll have to get whatever's available as we're running out of track time here in New England. That was never an issue when I lived in CA

Thx,
Viv

Welcome to the northeast! I was told an easy way to check the tires was to see if your fingernail leaves a "dent" in the tire tread as the harder rubber from heat cycle abuse won't compress the same.

Durometer for tracking tire hardness over time:

FWIW, Michelin’s heat cycle out the same, but I’ve never gotten more then 16 sessions without cording them..

Thanks for the input. I'm curious to know if you guys order your tires heat cycled?

I would think just temp sensors would be the more teutonic answer- simple and genau. Once your pressure is dialed in, that's all the info you need while on the track. Look at fluff off the track.

I have them (Temp sensors) on my 812. After a horrible experience with P Zeros I went (had to fitment wise) to the PZC4 which unlike the P Zero will maintain pressure all day/weekend long. Then I just glance down to see what the temps are doing and adjust accordingly.

My mechanic is a Michelin guy but yes, Cup 2s get awfully greasy at COTA in the Texas heat and Dunlops do have a following. My new Cup 2s are pretty much shot after only one weekend. Had them start to slip halfway through a session on a check ride Sunday.

ps I wish I could get Cup 2s on my 812 but the only correct load rated up front would be going from 275 to 305 and I'm rubbing already with Novatec springs now.

If you do not it’s great to put a heat cycle on for 5 laps and let them test 24 hours, but I’ve never done it.
It maybe the trick to make them last longer. I’m also curious who has done it with a proper comparison between pre heat cycled and not

I had Tire Rack heat cycle my last set of Trofeo Rs and they *seemed* to be a bit better out of the box and last a smidge longer, but I have nothing scientific to substantiate that.