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Old 02-22-2014, 11:43 AM   #35
VR Baron
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Quote:
Originally Posted by 130R View Post
What were your lap times?
Used the setting for the last session of the day. Started at 37.4 and last lap of five was 36.7 as I got used to being able to push it more as the tires were grabbing more with a bit more lean. The best I got all day with the stiffer settings was 37.3 and average was mid 37's
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Old 02-22-2014, 04:51 PM   #36
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Baron,

Question for you since you track Fontana too. Is the following pic normal for that track after two days'ish? Does that track eat tires that much? Or would tire choice and PSI setting help save some tire there?



To me that tire looks like it has too much pressure in it and it ballooned in the middle and he/she wore it out in the middle. Thoughts?

I am not trying to "bust out" the individual who's tire this is but I am trying to understand what happened to this tire and whether it is track related or user error. Since I have never been on this track I am asking someone who has. Capece?

T.
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Old 02-22-2014, 05:31 PM   #37
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I do not know F or R, Or alignment (info was not given). Pressure started at 37 Hot and then dropped 2 lbs. I tried to pry the info out. Car is a 1LE and I am guessing stock alignment.

That is why it is difficult to understand what happened to this tire.

T.
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"Horsepower is something that looks great in a Magazine article, but suspension is what actually gets you around the track fast.." Jack Olsen
The drag strip is like sniffing glue, it's cheap, it's a decent buzz, it doesn't last long and they are all the same.
Road racing is like China White Heroin, the buzz is stronger, the high lasts for hours, it's extremely addictive and they are all different.
I can't wait for my next
Track fix.
DA HAWKS OWN DA CUP!!!!!
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Old 02-22-2014, 06:01 PM   #38
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Fontana does that to tires, mine look the same. Now the center look I dont know. I start at 34/32 with my invo's and dont go past 37/35 after 5 runs.I have started at 35 and gone to 39 to40 but center didnt look like that.He maybe running to high on the street ? My wear is pretty even and run 1.2 degrees negative camber in front
now that I look at it more, not sure which is the outside part of the tire, guess the left view, its not just the center but wearing down from center all the way to the one edge? Could be camber setting is to much?
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Old 02-22-2014, 09:43 PM   #39
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Quote:
Originally Posted by VR Baron View Post
now that I look at it more, not sure which is the outside part of the tire, guess the left view, its not just the center but wearing down from center all the way to the one edge? Could be camber setting is to much?
The left side is the outside. That's a PZero tire. I can tell by the tread pattern which matches pics of my old tires. I think you're right though, too much camber. Look at the pitch of the tread. It angles down to the inside. There might have been a little too much air as well, but I think the camber is the bigger issue.
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Old 02-22-2014, 11:44 PM   #40
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Hey Mike, How are ya?

Yea, you know me, I run hard at Autobahn CC and Road America regularly and my tires never looked like that so when this person said that Fontana does this to tires I was shocked and thought maybe there was more to it. So I had to ask.

Thanks Baron.

T.
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"Horsepower is something that looks great in a Magazine article, but suspension is what actually gets you around the track fast.." Jack Olsen
The drag strip is like sniffing glue, it's cheap, it's a decent buzz, it doesn't last long and they are all the same.
Road racing is like China White Heroin, the buzz is stronger, the high lasts for hours, it's extremely addictive and they are all different.
I can't wait for my next
Track fix.
DA HAWKS OWN DA CUP!!!!!
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Old 02-23-2014, 12:47 AM   #41
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Originally Posted by 130R View Post
That doesn't look like camber wear at all to me...
Any idea's? These tires seem to wear in the center unless you are at 32 psi or something, but not like that from the center all the way to the edge.
though it would have to be alot of neg. Camber, at 1.2 degrees my wear is pretty even
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Old 02-23-2014, 08:23 AM   #42
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It's difficult to determine the issue without knowing what the guy was running on pressure and alignment. Zooming in you can see the middle valley appears to be shallower than the other two indicating over pressure. But it also looks like more wear towards the inside of the tire which is too much camber. However considering those are PZeros it could be from a loss a traction. I had a similar problem with fronts when I first tracked with the stock alignment and tire at our local Autobahn track. It's a euro track with lots of turns and I was pushing hard all day. The fronts had considerable wear on the outside and looked the opposite of this picture. In my case not enough tire on the front and too little camber. I ran 32 pounds.


But regardless this is why it's good to take tire temps after a run to make sure your setup is right.


Hey T, doing fine. Waiting for this white stuff to leave us.
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Old 02-23-2014, 11:37 AM   #43
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It all sounds good to me. Hope the person gets it sorted out.
Hope you guys dont freeze to much back there, my daughter is in Va and getting tired of all the snow with a 50 mile drive to work.Its 70 here today. The only downside is no water, Governor may say we have to pee on the plants to water them...lol
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Old 02-23-2014, 12:21 PM   #44
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To much camber looks different.
The road course on fontana changes from excellent track (the oval) to horrible stuff. Autox there is on a crappy patch of asphalt. It is hard on tires.
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Old 02-23-2014, 01:04 PM   #45
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Too much pressure is what I thought as soon as I saw it, whether it was front or rear but I did not want to skew anyone's opinion.

Too much camber would wear the outside of the tire. Not that, IMHO, that is EVEN possible.

All of the snow out here just let's us do all of our mods over the winter, if we have any to do. Otherwise we just sit and stew and when finally let loose in the spring we usually go through a set of tires in two weeks.

Keep safe out there guys. See you on the track.

T.
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"Horsepower is something that looks great in a Magazine article, but suspension is what actually gets you around the track fast.." Jack Olsen
The drag strip is like sniffing glue, it's cheap, it's a decent buzz, it doesn't last long and they are all the same.
Road racing is like China White Heroin, the buzz is stronger, the high lasts for hours, it's extremely addictive and they are all different.
I can't wait for my next
Track fix.
DA HAWKS OWN DA CUP!!!!!
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Old 02-23-2014, 03:38 PM   #46
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Said the tire preassure was 37, the down 2. Probably was more then that

oh well.
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Mods: Outlaw Axelback & J Pipes/Heritage&Stillen Grill/Halltech CAI/Apex Scoop,Washer Bottle/OEM Strut Tower Brace/VMax T/B/ G.M. Blade Spoiler/SLP Splitter/ Forgestar cf10 wheels & Michelin Super Sport tires/JBA Shorty Headers,HiFlow cats & tune/Remote Clutch resovoir/ Pedders Supercar coilovers and Pedders 27mm/32mm ZL1 Spec sway bars / Whiteline craddle Inserts & Upper rear arm bushes/ 416/414 RW HP/TQ
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