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The tires were brand new MPSS, I put maybe 200 miles or so on them between dealer, home, and the first track day. Then another few hundred miles for travel to/from the second. The pictures below were after the two days; one at Sebring and one at Palm Beach International. I have a Z51 with street alignment. Outsides are pretty worn but still decent tread in the middle except for the beading, I guess you could call it, which I am assuming is because of the lack of track alignment. Thoughts? I got 30K street miles on my first set, I would guess I lost 10K street miles or so from these two days. Could probably do 2-3 more track days.
I have whined on here about my brakes already, even though I somehow lost the pictures I meant to post from the brake change. Stock pads had about 50% life and I went through those almost completely at Sebring. Replaced with Hawk HPS 5.0 and went through the brand new set in one day at Palm Beach. It was metal on metal, I drove home to Orlando ~200 miles without using the brakes once which was impressive. This made the pads a PIA to change since they were so compressed. Nothing left but the metal backing for the pads in the front and not much more than that in the rears. Swapped in Carbotech 1521s for street, will use XP12/10s for track next time.
from what I see, most of that is from marbles picked up on the track. I have some pics of my tires after a few laps at COTA during an IMSA weekend and they looked exactly the same. Scared the crap out of me initially until I realized what it was.
Tires look pretty normal. But it does look like you are getting close to heating your tires to the point of death. I did this to my stock tires in 3 sessions. If you get faster you might need tires quicker than your predicting. Below happens pretty quick once you push them to hard. HPS are a aggressive street pad. They die quick on the track as you have found as they don’t work well in the heat range a stock C7 can generate. I love DTC 70/60’s combos, but they kill rotors quick as they are very aggressive. The Carbotech will defiantly be a step in the right direction.
Yeah those look normal, if a little roasted. Lots of tread left, it would seem. Crazy how fast these cars go through pads at the track! I will say PBIR and Sebring are both exceptionally hard on a car's tires and brakes specifically. You're hauling the car down from 140ish mph at both tracks at one or more points.
The tires were brand new MPSS, I put maybe 200 miles or so on them between dealer, home, and the first track day. Then another few hundred miles for travel to/from the second. The pictures below were after the two days; one at Sebring and one at Palm Beach International. I have a Z51 with street alignment. Outsides are pretty worn but still decent tread in the middle except for the beading, I guess you could call it, which I am assuming is because of the lack of track alignment. Thoughts? I got 30K street miles on my first set, I would guess I lost 10K street miles or so from these two days. Could probably do 2-3 more track days.
I have whined on here about my brakes already, even though I somehow lost the pictures I meant to post from the brake change. Stock pads had about 50% life and I went through those almost completely at Sebring. Replaced with Hawk HPS 5.0 and went through the brand new set in one day at Palm Beach. It was metal on metal, I drove home to Orlando ~200 miles without using the brakes once which was impressive. This made the pads a PIA to change since they were so compressed. Nothing left but the metal backing for the pads in the front and not much more than that in the rears. Swapped in Carbotech 1521s for street, will use XP12/10s for track next time.
Go to Discount Tire. They are authorized adjustors for Michelin. I had the same thing happen & got a brand new set for almost nothing. The fronts are warrantied for 15K & the rears for 30K. Even if you track it.
Go to Discount Tire. They are authorized adjustors for Michelin. I had the same thing happen & got a brand new set for almost nothing. The fronts are warrantied for 15K & the rears for 30K. Even if you track it.
Go to Discount Tire. They are authorized adjustors for Michelin. I had the same thing happen & got a brand new set for almost nothing. The fronts are warrantied for 15K & the rears for 30K. Even if you track it.
Really? I have 7200 miles on the car and the front are down to 2/32 after 5 HPDE days. It will be nice to get a set of MPSS for half price.
Go to Discount Tire. They are authorized adjustors for Michelin. I had the same thing happen & got a brand new set for almost nothing. The fronts are warrantied for 15K & the rears for 30K. Even if you track it.
Huh what? That's not tire failure. That's clear lack of negative camber. That's crazy if they are just giving away tires because we're burning through them at the track. Otherwise everyone would buy MPSS as track tires, melt them, then get replacements for almost nothing.
Huh what? That's not tire failure. That's clear lack of negative camber. That's crazy if they are just giving away tires because we're burning through them at the track. Otherwise everyone would buy MPSS as track tires, melt them, then get replacements for almost nothing.
I warrantied my tires after 2 track days and 9k miles. Pro-rated.
I warrantied my tires after 2 track days and 9k miles. Pro-rated.
wasn't that because of another issue though? Delamination?
From Michellin warranty:
– Misapplication, improper maintenance, racing, underinflation, overinflation
or other abuse;
– Uneven or rapid wear which is caused by mechanical irregularity in the
vehicle such as wheel misalignment (a measured tread difference of
2/32nds of an inch or more across the face of the tread on the same tire);
Also, sport cup 2s are in there for no warranty. But damn, I wish I knew this before I replaced my last ZP tires. I tracked it but them drove enough on the street to erase any track marks and wear was even due to proper camber. I guess if you just get a bit of camber so that your wear evens out, and then drive them enough to get rid of all the obvious gunk, I can't see why they'd deny you.
Last edited by BrunoTheMellow; 06-18-2018 at 02:31 PM.
Huh what? That's not tire failure. That's clear lack of negative camber. That's crazy if they are just giving away tires because we're burning through them at the track. Otherwise everyone would buy MPSS as track tires, melt them, then get replacements for almost nothing.
Good point. Mine didn't look like that. They had 3K miles and 6 track days and were down to 2/32 in places-mostly along the edge.
wasn't that because of another issue though? Delamination?
From Michellin warranty:
Also, sport cup 2s are in there for no warranty. But damn, I wish I knew this before I replaced my last ZP tires. I tracked it but them drove enough on the street to erase any track marks and wear was even due to proper camber. I guess if you just get a bit of camber so that your wear evens out, and then drive them enough to get rid of all the obvious gunk, I can't see why they'd deny you.
No, my cup2 delaminated. I told them I tracked the pss, too. Still replaced them. You need to be under 4/32nds across the tread IIRC
Last edited by village idiot; 06-18-2018 at 10:40 PM.
Michelin will cover delamination and chunking if the tires appear to have proper alignment. Michelin questioned the wear pattern of my chunked tires when I took them to Discount Tire, and they did replace at half price. But OPs tires look like normal track wear except for outer edge from lack of track alignment.
Michelin will cover delamination and chunking if the tires appear to have proper alignment. Michelin questioned the wear pattern of my chunked tires when I took them to Discount Tire, and they did replace at half price. But OPs tires look like normal track wear except for outer edge from lack of track alignment.
Tires look pretty normal. But it does look like you are getting close to heating your tires to the point of death. I did this to my stock tires in 3 sessions. If you get faster you might need tires quicker than your predicting. Below happens pretty quick once you push them to hard. HPS are a aggressive street pad. They die quick on the track as you have found as they don’t work well in the heat range a stock C7 can generate. I love DTC 70/60’s combos, but they kill rotors quick as they are very aggressive. The Carbotech will defiantly be a step in the right direction.
Thanks for the heads up. You tore those suckers up good
The tires were brand new MPSS, I put maybe 200 miles or so on them between dealer, home, and the first track day. Then another few hundred miles for travel to/from the second. The pictures below were after the two days; one at Sebring and one at Palm Beach International. I have a Z51 with street alignment. Outsides are pretty worn but still decent tread in the middle except for the beading, I guess you could call it, which I am assuming is because of the lack of track alignment. Thoughts? I got 30K street miles on my first set, I would guess I lost 10K street miles or so from these two days. Could probably do 2-3 more track days.
I have whined on here about my brakes already, even though I somehow lost the pictures I meant to post from the brake change. Stock pads had about 50% life and I went through those almost completely at Sebring. Replaced with Hawk HPS 5.0 and went through the brand new set in one day at Palm Beach. It was metal on metal, I drove home to Orlando ~200 miles without using the brakes once which was impressive. This made the pads a PIA to change since they were so compressed. Nothing left but the metal backing for the pads in the front and not much more than that in the rears. Swapped in Carbotech 1521s for street, will use XP12/10s for track next time.
I use xp12/10 and they are awesome. However, they cracked my stock rotors pretty quick. I have DBA rotors on now.
Sucks how it is not a linear progression right? Going a little faster costs so much $$$
The tires look fine for more street use. On the track though? Might be seeing cords on those sides in 1 day.
I tried taking a step backwards and using stock brake pads on a (borrowed) gs. The brakes were smoking in 10 minutes.
06-17-2018, 10:19 PM
HPDE wear and tear: 2 days on tires and brakes
