Michelin Pilot Sport Cup 2 R are finally here!!!!
07-21-2018, 04:59 AM
#31
I'm pretty sure the official wear rating on Cup R signifies they wear out twice as fast as the Cup2
I don't think you can get max speed out of a Cup2 on the second day at a track, but at least you can still use them. Not so sure on the R
Driving to the track will be fine on the R, but I'm not sure you could use hard and then 'legally' drive home again which would be my issue. (Normally 300-700 miles home for me)
I don't think you can get max speed out of a Cup2 on the second day at a track, but at least you can still use them. Not so sure on the R
Driving to the track will be fine on the R, but I'm not sure you could use hard and then 'legally' drive home again which would be my issue. (Normally 300-700 miles home for me)
07-22-2018, 03:37 PM
#32
I just haved the info that the cup R is also really more stiffness than the standard cup2, it is like 30% more rigid! Comparable to the rigidity of the ZP (zero pressure tire) but it is not a runflat tire...
that’s probably mean that the oem gt2 rs setup was made for this tire (roll bar on soft position) to be driveable on the road, if was on medium or hard on the road just impossible or dangerous to drive the car on road, especially on the wet.
on the track with cupR and medium (nordschleife) of hard roll bar setup....MAMAM MIA!!!! 🏎🏎🏎
that’s probably mean that the oem gt2 rs setup was made for this tire (roll bar on soft position) to be driveable on the road, if was on medium or hard on the road just impossible or dangerous to drive the car on road, especially on the wet.
on the track with cupR and medium (nordschleife) of hard roll bar setup....MAMAM MIA!!!! 🏎🏎🏎
11-26-2018, 03:17 PM
#36
Drifting
11-27-2018, 09:52 AM
#38
Rennlist Member
CJ is correct. We had Porsche and Michelin guys recently at NCM to re-set the lap record on a fresh set of Cup2R. The recent Automobile review with ZR1, GT2RS, and McLaren 720S where the GT2RS turned a 2:05 was on a "worn" out set of Cup2R tires with 8-10 cycles on them. The first 1-2MM of tread is literally their race rubber, after that is worn way, it is their normal Cup2 rubber. That is how they get their 150 rating, because it's not race rubber for the whole tire. So once you wear away the first 1-2mm, the super sticky race rubber is gone. Porsche showed up again with a brand new set and ran a 2:02.XX at NCM with the set of sticker Cup2R.
That's how they work, and why they are so crazy expensive. Literally two different compounds, same tire. Interesting, but doesn't make much sense to me for the cost. I'll take Trofeo-R all day long, still faster than Cup2 N1, and barely more expensive, and almost half the cost of Cup2R.
That's how they work, and why they are so crazy expensive. Literally two different compounds, same tire. Interesting, but doesn't make much sense to me for the cost. I'll take Trofeo-R all day long, still faster than Cup2 N1, and barely more expensive, and almost half the cost of Cup2R.
11-27-2018, 09:56 AM
#39
Rennlist Member
And the regular MPSC2 is already 2 compounds.
Inside of the tire seems to wear like Supersport for driving home and the outside wears like a slick for going fast.
So perhaps all the did is add outside rubber compound across the tire for a couple mm of slick performance for 8 sessions.
8 sessions seems like a lot for 2 mm.
Inside of the tire seems to wear like Supersport for driving home and the outside wears like a slick for going fast.
So perhaps all the did is add outside rubber compound across the tire for a couple mm of slick performance for 8 sessions.
8 sessions seems like a lot for 2 mm.
11-27-2018, 10:06 AM
#40
Rennlist Member
And the regular MPSC2 is already 2 compounds.
Inside of the tire seems to wear like Supersport for driving home and the outside wears like a slick for going fast.
So perhaps all the did is add outside rubber compound across the tire for a couple mm of slick performance for 8 sessions.
8 sessions seems like a lot for 2 mm.
Inside of the tire seems to wear like Supersport for driving home and the outside wears like a slick for going fast.
So perhaps all the did is add outside rubber compound across the tire for a couple mm of slick performance for 8 sessions.
8 sessions seems like a lot for 2 mm.
11-27-2018, 11:43 AM
#41
Drifting
Correct, that's exactly what they did, it's just the outside rubber compound for the whole tire (which would technically be 3 compounds). Its more like 1-3 sessions, and the super-sticky outside rubber is gone. The 8 sessions were just how much the tires already had on them for that Automobile mag shootout, which they said the sticky rubber was definitely gone. Porsche said they could run a 2:02 on sticker tires, and they did. This takes cheater tires to the next level, but crazy expensive.
11-27-2018, 08:53 PM
#43
Burning Brakes
WOW!!!
So, Michelin Super Sport (or MPS4S) compound in the inner portion, with matching heavy grooves for rain driving, then outside 2 more compounds, the classic MPSC2 compound and an extra layer of Michelin hard race slicks or similar for even extra grip but for a few laps (the 1-2mm of really sticky outer edge rubber).
All these for $3,500 before mounting, and just to enjoy maybe a 1/2 track day of good grip, then back to the grip level of the $2,000 MPSC2-N2 tires.
No wonder I have been on Hoosiers for 15+ years, almost race slicks grip, heavily track tested every week across many track events and race series in U.S., and truly fast (not a tad faster, but a lot faster than OEM street tires).
So, Michelin Super Sport (or MPS4S) compound in the inner portion, with matching heavy grooves for rain driving, then outside 2 more compounds, the classic MPSC2 compound and an extra layer of Michelin hard race slicks or similar for even extra grip but for a few laps (the 1-2mm of really sticky outer edge rubber).
All these for $3,500 before mounting, and just to enjoy maybe a 1/2 track day of good grip, then back to the grip level of the $2,000 MPSC2-N2 tires.
No wonder I have been on Hoosiers for 15+ years, almost race slicks grip, heavily track tested every week across many track events and race series in U.S., and truly fast (not a tad faster, but a lot faster than OEM street tires).
11-28-2018, 12:15 AM
#44
Rennlist Member
It's more like find another 200 hp and 200 tq, LOL. The difference between a GT2RS and GT3 on track are pretty mind-blowing. Insane acceleration and double the downforce. The original 2:05.9 is a better reference number based on "standard" Cup2 rubber, because sticker Cup2R's are literally like grooved slicks. But honestly, comparing anything with less than 700hp to the GT2RS is almost pointless, it's supercar territory. Pilgrim also turned a 2:13 in a stock GT3 (not shown in the article), so that's ~8 seconds difference with the same driver on similar tires.
11-29-2018, 09:08 AM
#45
3rd Gear
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Do you know when the PSC2R will be availlable in other places than Porsche dealers and if they will be availlaible in 225/45/17 such as the PSC2 ?
Are you sure about the CUP2 rubber with a 1-2mm layer of PSC2R layer on it ? If it's true than this tire is really expensive compared to dedicated track slick tires.
I'm a rally driver and in my category, only street tires with a treadwear equal or higher than 140 are allowed, that's why I'm very interested about the PSC2R but if only a thin layer from it is grippier, than I should maybe buy the PSC2 or change category and buy real competition tires that will have the same grip until they are worn.
Prices in 225/45/17 :
PSC2 : 160$
PSC2R : ?
Competition tire : 340$
Are you sure about the CUP2 rubber with a 1-2mm layer of PSC2R layer on it ? If it's true than this tire is really expensive compared to dedicated track slick tires.
I'm a rally driver and in my category, only street tires with a treadwear equal or higher than 140 are allowed, that's why I'm very interested about the PSC2R but if only a thin layer from it is grippier, than I should maybe buy the PSC2 or change category and buy real competition tires that will have the same grip until they are worn.
Prices in 225/45/17 :
PSC2 : 160$
PSC2R : ?
Competition tire : 340$