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Old 11-06-2017, 11:38 AM   #1
MrcamaroZ28
 
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Michelin pilot sport 4S

I just bought some Michelin Pilot Sport 4S and I want to autocross or even track a little but I just paid $1500 for tires. Will they be destroyed after a few track days and/or autocross? I've never done either one. Which will be harder on a set of tires. autocross or the track.
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Old 11-06-2017, 12:13 PM   #2
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I just bought some Michelin Pilot Sport 4S and I want to autocross or even track a little but I just paid $1500 for tires. Will they be destroyed after a few track days and/or autocross? I've never done either one. Which will be harder on a set of tires. autocross or the track.
I have the same tires, but haven't tracked them yet. It got cold too quickly this year in TN/KY.

That said, I find Auto X eats tires more than road coursing. Im sure if your local Auto X club isn't run by a bunch of Miata drivers, they won't set up every course to be tight and technical. Those style courses are a lot harder on a heavier car like ours, thus I went thru tires about every 3-5 sessions in the summer.
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Old 11-06-2017, 12:52 PM   #3
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open track is much harder then autocross on tires. More time to get them hot and much much more seat time.

Your tires will be fine to try it out for a day. Since your a novice you likely wont see in major wear in 1 day. But set the front camber as far negative as you car. Street settings if you happen to be good you could kill them in 1 day of open track.

Autocross... just show up and have fun.
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Old 11-06-2017, 01:05 PM   #4
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Agree with above. Autocross is pretty easy on tires. You could easily get two seasons out of a set of those Michelins. At first, you wouldn't be putting much wear on the tires on the track but as you get faster you can easily go through a set of tires in 2 weekends or less.
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Old 11-06-2017, 01:49 PM   #5
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I've seen some reports that the tread blocks came off in chunks on the track.
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Old 11-06-2017, 02:28 PM   #6
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I've seen some reports that the tread blocks came off in chunks on the track.
Overheating the tires due to weight of our cars. I have seen several brands chunk on heavy cars.
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Old 11-06-2017, 04:40 PM   #7
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Chucking occurs when you overheat the tires. It can happen on any car, but heavier cars are harder on tires for sure. So just be mindful of your pressure settings and stay close to mfg. spec for your tires. Check your pressures right when you come off the track with a good digital gauge and make adjustments over the course of your track day. As the temperature heats up, you will need to let off more pressure from your cold starting pressures in the morning.

Track days can be hard on tires, but if you manage them properly you will find a happy medium between wear and fun! If they start to feel greasy (car starts to slide around) during a session, they are likely overheated and you will need to slow down and cool them down or better yet come into pits and check and adjust pressures then go back out.

Go do both, a great way to enjoy your car, get to know some other car folks and have a lot of fun.
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Old 11-06-2017, 08:40 PM   #8
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Originally Posted by MrcamaroZ28 View Post
I just bought some Michelin Pilot Sport 4S and I want to autocross or even track a little but I just paid $1500 for tires. Will they be destroyed after a few track days and/or autocross? I've never done either one. Which will be harder on a set of tires. autocross or the track.
I went through a set of Cup 2's in two track days. Very disappointing and it did not have nearly the same grip as the Trofeo's. I can get six days out of the Trofeo's

I am now trying a set of the ZL1 1LE Goodyear 3R's.
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Old 11-06-2017, 09:22 PM   #9
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I think one issue with the PSS4 and chunking is running them hard at the track with near full tread. I've taken chunks out of Bridgestone, Dunlop, Falkens, Hankooks from overheating them and continuing to run them hard.

That said, if you're new a novice weekend shouldn't kill them, probably.

I just put a set of PSS4 on the 1LE but I won't be tracking them. Great on the street.
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Old 11-07-2017, 08:26 AM   #10
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Do the Z28's have a tire temperature sensors? I can't seem to find it in the manual? The 6th gen's do.
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Old 11-07-2017, 09:09 AM   #11
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Z/28s only have tire pressure monitor, no tire temperature.
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Old 11-07-2017, 10:11 AM   #12
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Agree on what many have said.....

Road Course will be much harder on tires. Key variables are proper pressures, the most negative camber you can get, the tracks you run (track surface, fast corners and off-camber corners make a huge difference), and how hard you drive.

Really watch the pressures and try to get as much negative camber as you can. Either of these being "off" and you can cord a tire in a day. Hate it when that happens.

BTW....I have a brand new set of Trofeos for sale if anyone is looking for some fresh shoes.... (I am now running Hoosiers on the track). See this post.

http://www.camaro5.com/forums/showthread.php?t=512577

Don't mean to post-bomb this thread.....just not many people check the marketplace that often.

OP - have a BLAST with your Z/28. Try it on a Road Course....they are awesome on the track!!
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Old 11-07-2017, 11:49 AM   #13
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How can you tell want your camber is set at? So your camber should be negative on the back and front?
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Old 11-07-2017, 12:27 PM   #14
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How can you tell want your camber is set at? So your camber should be negative on the back and front?
Only way to tell is on an alignment rack. Yes if you track the car you want negative front and rear. As much as you can get.

My front is -2.8 and you can see that much, but not -1.0. That degrees.
I don't think anyone can see 1 degree.
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