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      08-30-2011, 02:48 PM   #1
persian54
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Tire wear after 6 Track days and ~5k miles

Worst of all, Driver Front:


To me it shows obvious over inflation.... Most likely from Big Willow at 100 degree heat...
I've done Big Willow 3 times on these tires, Streets of Willow twice on these tires (Once CW other time CCW). And also once at Button Willow CW.
Passenger side Front



Passenger side Front again:


Then the rears




Rears don't seem too bad

Alignment is -1.6 R -1.1 F. Toe I don't recall.
These are the stock CS3s.


I have RS3s in my storage waiting to be mounted...I Just need to get wheels first........

I wonder if I can run these tires on the track at least 1 more time....
Street they're fine (I drive speed limit on the street, more or less. Don't corner hard. Won't be raining here for a while. I also take the Z4 out more than the M3 so it sits more than it's driven excluding to and from a couple places)

I'm thinking of swapping the Driver side with the Passenger side (front) if the next track day is CW.
if it's CCW, then it's fine...I mean, not to break any lap times or anything like that, but to have fun (main reason, well actually, only reason really I go) at the track.
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      08-30-2011, 03:14 PM   #2
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You should measure your tread depth, if you're at least 4/32 you might be okay for another track day or two depending on how you drive. Some of the chunking you are seeing is due (this is what I've been told) to not allowing the tires to heat up uniformly before they get pushed hard on the track. This causes rubber at different temps relative to the rubber beneath it to chunk off.

I would guess your tires are probably going to be good for another day, they look ugly but track tires never look good. I have a set of Hankook Evo that look not much better and are going to the track one more time.
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      08-30-2011, 03:28 PM   #3
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make sure you keep a good eye on your tire pressure and let proper time to heat up the tires.
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      08-30-2011, 03:32 PM   #4
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Quote:
Originally Posted by xchosun1x View Post
make sure you keep a good eye on your tire pressure and let proper time to heat up the tires.
Yeah

I give them time to warm up (2 laps?) but I will admit I haven't been checking the pressures as much as I should

I started doing it after what happened to the PSSs the last time at Big Willow.
So my first 4 track days....I didn't check much, nor did I really give them appropriate time to warm up . What can I say, those were my first couple of days ever on a track.

But I was doing it religiously Sunday at Streets.

When I mount my RS3s, I'll be much more careful.

Last edited by persian54; 08-30-2011 at 04:04 PM.
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      08-30-2011, 03:55 PM   #5
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I agree they're probably ok for another track day. Ugly for sure, but nothing there really jumps out as a cause to say scrap them.
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      08-30-2011, 04:05 PM   #6
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Looks to me that they're getting over-inflated as they heat up. You need to either start with a lower cold psi or drop some air after they've heated. For six track days they actually look pretty good.
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      08-30-2011, 04:05 PM   #7
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Do you guys think these would pass for a lease return???
I know it's 2.5 years away, but hey it doesn't hurt to plan ahead lol

Or at least would the rears pass?

I have a set of CS3s for the front with 8/32 Thread that I can use if need be..but if these would work, hell yeah haha
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      08-30-2011, 04:08 PM   #8
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Quote:
Originally Posted by dcstep View Post
Looks to me that they're getting over-inflated as they heat up. You need to either start with a lower cold psi or drop some air after they've heated. For six track days they actually look pretty good.
I used to put them at 34 Cold and didn't check them hot (stupid mistake I know, but you live and learn right?)

Last weekend I put them at 30 cold but the stupid TPMS warning came up, so I raised it to 32 Cold.

Came in after (2 warm up, 3 hard) 5 laps and they were 40 Hot. Dropped down to 38 (hot)
Went back out (maybe 3 more laps? don't remember), and after my cool down lap (so total of 4 laps or so), the temps were around 38
So I guess that means that at 32 cold, it goes up to 40 hot?

Meaning next time, 30 sold is better? (and to just ignore the annoying TPMS warning).

This is all for my CS3s
When I mount the RS3s, I won't have TPMS.


Also, I'll be having a Dinan stg 1 with camber plates installed soon.
Front camber will be maxed out, my guess is around -2.2
Toe will be 0

Rear I'll do -1.7 (or maybe just keep the -1.6 i have now?) and have total toe be 2
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      08-30-2011, 04:18 PM   #9
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Quote:
Originally Posted by persian54 View Post
Do you guys think these would pass for a lease return???
I know it's 2.5 years away, but hey it doesn't hurt to plan ahead lol

Or at least would the rears pass?

I have a set of CS3s for the front with 8/32 Thread that I can use if need be..but if these would work, hell yeah haha
??? You'll go through three sets by then.
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      08-30-2011, 04:56 PM   #10
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Quote:
Originally Posted by dcstep View Post
??? You'll go through three sets by then.
Sorry I should have been more clear:

If these can pass inspection as is, I'll have them removed now and just mount new tires on them.

Otherwise, if they won't pass, I'll just burn them to the ground and then buy new tires lol
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      08-30-2011, 05:43 PM   #11
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Tires like that may open up a lot of questions about the condition of the car that you may not want to hear when you turn it in......
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      08-30-2011, 05:46 PM   #12
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Quote:
Originally Posted by arter View Post
Tires like that may open up a lot of questions about the condition of the car that you may not want to hear when you turn it in......
Very true.........

Screw it, I'll just burn through them
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      08-30-2011, 10:46 PM   #13
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1 improper tire pressure
2 camber (maybe, need a pic from the side)
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      08-31-2011, 12:43 AM   #14
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Quote:
Originally Posted by wwjd15 View Post
1 improper tire pressure
2 camber (maybe, need a pic from the side)
Yeah figured 1 out the hard way

2, I'm already maxed out with what is possible with stock set up :/


Thanks everyone for the advice
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      08-31-2011, 12:53 AM   #15
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Looks like they held up well considering you did 6 track days.
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      08-31-2011, 04:39 PM   #16
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Quote:
Originally Posted by persian54 View Post
I used to put them at 34 Cold and didn't check them hot (stupid mistake I know, but you live and learn right?)


Came in after (2 warm up, 3 hard) 5 laps and they were 40 Hot. Dropped down to 38 (hot)
Went back out (maybe 3 more laps? don't remember), and after my cool down lap (so total of 4 laps or so), the temps were around 38
So I guess that means that at 32 cold, it goes up to 40 hot
How hard are you pushing the car? I wonder if perhaps your corner entry speed might be too high and you're getting a lot of understeer? Or perhaps you're just a really quick driver going at 10/10ths and operating at pretty good slip angles. I've seen guys get their temps from 36 psi cold to over 50 in one session. They are the same people complaining of understeer. I'm not an expert, but my pressures go from 35 psi cold to 40 psi hot after a 20 minute session and I see 42-44 after a 40 minute session. Yes, this will depend on the track and ambient temps and changes in track temp, but I see about the same temp changes whether I'm on a tight twisty track as a longer higher speed track.
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      08-31-2011, 05:51 PM   #17
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i doubt it will pass lease return. just burn them to the ground by running them again at the track. the dealerships are pretty picky when it comes to lease return. think about it -- no 2nd hand car buyer would buy a car with tires that are chunking like that.
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      08-31-2011, 06:56 PM   #18
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Quote:
Originally Posted by VictorH View Post
How hard are you pushing the car? I wonder if perhaps your corner entry speed might be too high and you're getting a lot of understeer? Or perhaps you're just a really quick driver going at 10/10ths and operating at pretty good slip angles. I've seen guys get their temps from 36 psi cold to over 50 in one session. They are the same people complaining of understeer. I'm not an expert, but my pressures go from 35 psi cold to 40 psi hot after a 20 minute session and I see 42-44 after a 40 minute session. Yes, this will depend on the track and ambient temps and changes in track temp, but I see about the same temp changes whether I'm on a tight twisty track as a longer higher speed track.
Er I would prly say I'm entering too hot as I don't think I'm a really quick driver lol

But I do get LOTs of understeer in my car, that much I know.
Surprisingly, the couple of times I've driven someone else's car, I don't feel the same understeer.

The temps on sunday were 105-110, but it came down to 95-100
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