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Old 04-05-2009, 12:38 PM   #1
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Tire wear explanation needed

This is a NEW front Michelin Power Race Medium compound.
I ran it at TWS (Texas World Speedway) yesterday on warmers and was running (psi) 30F HOT and 29R HOT (btw thanks for the recommendations John )
I would like an explanation for the wear pattern on the right side. . .now to the pictures. . . .

Right Side
2efrk4deleted

Left Side
33wac6s

TIA

-Gary
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Old 04-05-2009, 01:15 PM   #2
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Old 04-05-2009, 01:41 PM   #3
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Quit playing around. You just want to show us how you can destroy a new set of tires. I say the wear is from you haulin .
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Old 04-05-2009, 01:42 PM   #4
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your suspension set up maybe.....I dont know just taking a guess!
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Old 04-05-2009, 01:42 PM   #5
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Hopefully John Hutchinson will see this soon. Patrick will know too. It looks like cold tear, but on the front?? That is counter-intuitive.
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Old 04-05-2009, 01:44 PM   #6
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looks like cold tear to me as well...from what I've seen and heard in the past. I let the experts chime in though.
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Old 04-05-2009, 01:46 PM   #7
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Quote:
Originally Posted by dbuck View Post
looks like cold tear to me as well...from what I've seen and heard in the past. I let the experts chime in though.
That's why I posted it. Curt told me a bit about it last night after TWS (Texas World Speedway) but I would like to know so I can pinpoint the cause. . .
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Old 04-05-2009, 01:52 PM   #8
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I would check with your vendor about the pressure you are running.
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Old 04-05-2009, 02:40 PM   #9
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The old Power Race tires run 22-24 psi in the rear and 31-33 psi in the front. You're definitely running too high in the rear and too low in the front.
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Old 04-05-2009, 02:47 PM   #10
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Quote:
Originally Posted by civicious View Post
The old Power Race tires run 22-24 psi in the rear and 31-33 psi in the front. You're definitely running too high in the rear and too low in the front.
In the original post, he mentioned that the pressures were "HOT" pressures. The front should be higher when "hot", but the rear seems perfect. I have always heard 22 rear cold, and 29 front cold. As light as he is, maybe a pound less wouldn't hurt
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Old 04-05-2009, 02:48 PM   #11
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Quote:
Originally Posted by civicious View Post
The old Power Race tires run 22-24 psi in the rear and 31-33 psi in the front. You're definitely running too high in the rear and too low in the front.
, my bad. I'm running a BT-002RS in the rear.
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Old 04-05-2009, 02:49 PM   #12
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Quote:
Originally Posted by Moody View Post
I would check with your vendor about the pressure you are running.
I talked to John at TWS (Texas World Speedway) yesterday and he got me setup with recommended pressures. . . . I guess you missed where I said that
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Old 04-05-2009, 03:53 PM   #13
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http://www.feelthetrack.com/tire-wear.html
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Old 04-05-2009, 04:07 PM   #14
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Old 04-05-2009, 04:40 PM   #15
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The way I understand Cold Tear. Once the condition starts, you cant reverse it. The tire is gonna continue to do that. It'll be interesting to see what John says. Looks like you where cookin'em up good!
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Old 04-05-2009, 04:47 PM   #16
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John is the Bridgestone and Pirelli vendor, not the Michelin vendor.

I have been running the Michelins for the last 4 seasons...and the COLD front tire pressure for a Power Race is 32-33psi. It sounds like you are running too low of pressure if you are at 30psi HOT. Typically my HOT front pressure was 36psi right off the track.
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Old 04-05-2009, 05:24 PM   #17
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Quote:
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What a great find, Derek. Thank you.

-Curt
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Old 04-05-2009, 05:55 PM   #18
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What Bubba said, but we run as low as 29 front. Usually 30.

Always check them cold.
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Old 04-05-2009, 08:06 PM   #19
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I don't run Michelin's but this is some information I found a while back. Figured it'd be worth saving.

mmew47
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Old 04-05-2009, 09:02 PM   #20
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Quote:
Originally Posted by bluewave18 View Post
Quit playing around. You just want to show us how you can destroy a new set of tires. I say the wear is from you haulin .
If I wanted to show off, I'd post pics of my street tires

Quote:
Originally Posted by maxgs View Post
What a great find, Derek. Thank you.

-Curt
+1, I'm adding that to my favorites, good info. Thx Derek. . .
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