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Old 11-07-2008, 06:58 PM   #1
operating engineer
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Default Shelf life of R Compound

How important is fresh R compound tires? I can get some new Hankook Z214 C70 for 85 each, size 245/40/18. The only thing is were made the March of 05. What do you guys think?
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Old 11-07-2008, 07:06 PM   #2
rawbeanz
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I don't know about R-compounds but....my friend emailed me this a while ago


http://abcnews.go.com/Video/playerIndex?id=4826897
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Old 11-07-2008, 07:27 PM   #3
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not worth it. Them are old. Half that price, maybe.
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Old 11-07-2008, 08:25 PM   #4
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Are they new or used? Many of the korean R compound tires bought these days have build dates of 05. If they're new and have been stored properly, they'd be a good deal. If used, I'd have to know how many heat cycles or runs they had and see good pics. Ideally, a durometer reading would be nice too. Much over 54-55 and they're not going to be very good (for autocross).

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Old 11-07-2008, 08:32 PM   #5
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I just finished off a set of A032R softs built in 2003. They were still quite gummy when I got them a few months ago. Depends on how they are stored. Depends on how competitive you want to be.

At $85/tire, how can you go wrong? You know, don't run that at nationals, but for anything else, take them in a heartbeat.
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Old 11-07-2008, 09:07 PM   #6
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My Neovas (140 treadwear street tires) were made in 2005 and they're still plenty fast. I had em shaved though. That would be one way to get rid of the outer rubber.
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Old 11-07-2008, 10:15 PM   #7
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as usual the rubber hardens from the inside out...if they are even bagged (not talking vacuum) it will help keep the rubber "fresh". We use to wrap our formula car slicks as we bought them all at once at the beginning of the year. Some were 2-3 years old at times and still measured out close to fressh.
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Old 11-07-2008, 10:21 PM   #8
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No, rubber does *not* 'harden from the inside out.'

The solvents leave from the surface. Rubber hardens from the outside in.
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Old 11-08-2008, 05:51 PM   #9
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How should one store tires over the winter?
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Old 11-08-2008, 08:29 PM   #10
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Quote:
Originally Posted by gold rush View Post
How should one store tires over the winter?
I want to know also! How would some A6 do if they were left out door in garbage bags? I'm in NYC area so it does snow sometime, low maybe around 20-25 degrees.
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Old 11-09-2008, 12:23 PM   #11
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Wrap in tied off garbage bags and keep them from extremely low temps. If you have room in a closet inside, put them in there as opposed to out in the garage over the winter. 25F is too low for them....they will be noticably slower next spring.

Jay
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