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Old 12-03-2005, 11:33 AM   #1
Scooby Newbie
Member#: 89538
Join Date: Jun 2005
Default R-Compound Q - Is 4yrs too old?

In my quest to find a used set of R-comps in 225/50/16 I received an offer from a fellow racer with a set of 2001 Kuhmo V700s, used for a coupla laps only as rain tires, >90% usable tread.

They are cheap - is a 4 y.o tire worth it?
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Old 12-03-2005, 11:41 AM   #2
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2004 PSM STi
2006 Mazda MX-5 Race Car


I really am not sure, but I also have another related question to add to this. For how long and in what conditions should R-compounds be stored when not in use? Should they be taken off the rim?

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Old 12-03-2005, 11:43 AM   #3
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2005 2012 Jeep
2013 DGM BRZ


From my experience with people running on 4 yo tires, if you aren't getting them for free then they aren't worth it.
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Old 12-03-2005, 12:30 PM   #4
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I think you need to keep them in an airless, cool, dark environment - I've heard of folks stuffing them in plastic trash bags and sealing them up for storage.
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Old 12-03-2005, 12:39 PM   #5
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Join Date: Dec 2004
Chapter/Region: NESIC
Location: Boston, MA
06 WRX


With R-compound's it's all about the heat cycles. Especially on the high end Hoosier type tires. The more times they are heat cycled, the less life they have.
They should be stored in a controlled temp. enviroment and with no air pressure. I don't know if the trash bag's help.
I've bought and driven on used race rubber, but I wouldn't buy anything over 1 or maybe 2 years old.. but that was like 50% used.

If they have been kept in a good enviroment and a good price, they may be worth it.
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Old 12-03-2005, 01:28 PM   #6
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2003 WRX


Another potential issue...

If they are the Ecsta V700, which were a popular rain tire, they should only be run full tread as rains, so if they're still soft enough to use, they'll develop bad wear patterns quickly in the dry.

If they're the Victoracer V700, ignore this comment.
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Old 12-03-2005, 05:40 PM   #7
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96 3MI Racing LLC
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have the tires been in bags/sealed/wrapped up for the four years?...with out race tires, especially our rain tires we keep them bagged...keeps the life of the rubber preserved, somewhat...
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Old 12-04-2005, 11:33 AM   #8
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XP class Impreza L


Bagging the tires keeps them from the rubber from getting oxidized as quickly. If they were bagged, they might be as quick as a set of Azenia's being that they are 4 years old. In cold weather they will be worse, in hot weather they will be better. If they were not bagged they are worthless.

I ran on used V700's that were 2 years old this year and after trying a set of Azenia's (RT215's) that were fairly new I'd say the V700's were slower. This was towards the end of the season and end of the life of the V700's.
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