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Michelin Pilot Sport 4S Chunking - Normal?

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Old 07-28-2023, 10:33 PM
  #31  
PJ Cayenne
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Originally Posted by CT_Peter
Haven’t you read all the posts on RL? P-zeroes will make your car explode. 🤣
I got 12k out of a set of PZeros, and only replaced them at that mileage as I blew a rear tire, and had a set of MPS4s on reserve at the dealer. After about 4k on the MP4Ss, I am not that impressed. A bit quieter, but after two track days (at LRP), the tread seems to have melted and flowed. I will add pics of this tomorrow. The Pzeros held up better, and had better directional stability. Probably get a new set of Pzeros after I am convinced the Michelins are trashed.
Old 07-28-2023, 11:00 PM
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CT_Peter
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Here’s an old photo of one of my sets of 4Ss courtesy of LRP.

Old 07-29-2023, 01:52 PM
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Originally Posted by drdantheman1
Yup, both the PS4S and cup2's will start "chunking" or delaminating if they're pushed too hard without enough camber, or if their pressures aren't monitored closely. Tires should start cold at 28-29psi and warm up to 33-34 max. I gradually bleed off air after every seession to get to 33-34 hot pressure. There's a long thread about this on Rennlist already. I got 5 track days out of my last front set (with OE alignment). I've since changed my alignment to the max spec on OE C2S suspension (-1.4 camber front, -2.1 camber rear) and my PS4S look great after 3 track days.

Pics attached: of delaminating from OE alignment and not checking pressures
: max alignment specs
: new PS4S after 3 track days
I was at 34 hot up front when at the Glen in June. Hoping the additional negative camber applied will help alleviate the issue. Two new PS4 being installed this Friday, then to Summit Point for the weekend.
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Old 07-29-2023, 11:08 PM
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Originally Posted by CT_Peter
Here’s an old photo of one of my sets of 4Ss courtesy of LRP.
Left side tire, correct?
You rip up that track, I've seen your car there, you drive it well.
Old 07-29-2023, 11:29 PM
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CT_Peter
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Yes, as you know, LRP eats front left tires like it’s going out of style.

Here are the last set of Nankangs for comparison. Absolutely worn out - but not falling apart.







Last edited by CT_Peter; 07-29-2023 at 11:31 PM.
Old 07-30-2023, 09:14 PM
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They wore very well. They sound like a good alternative to Michelin/Pirelli .
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Old 08-01-2023, 09:31 AM
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Originally Posted by CT_Peter
I’m probably in the minority, but I have had good experience with the N0 Scorpions on my Macan since 2016. I run different tires on it in the winter, but the Scorpions have been absolutely fine on that car. I know others have absolutely hated them however.
try latitude summers,… changed the macan experience for me (when i had one)

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