There are a lot of bad tires out there!!!!!
Tire Rot????
Thread Starter
Intermediate
Joined: Oct 2006
Posts: 47
Likes: 0
From: Enon Ohio
Tire Rot????
I am looking at a set of Goodyear Runflats that were on a 98 and removed back in 99 and stored in a garage with less than 10,000 mi. on them. My question is will the rubber deterioate on these since they have been stored for 8 years and become unsafe?
Melting Slicks
Joined: Oct 2006
Posts: 3,447
Likes: 6
From: Los Angeles
It's not a good idea to ride on tires that have been sitting that long. Usually the tire gets very hard and looses flexibility. It will start to develop stress cracks very quickly. Tires have a shelf life, but it varies per tire.
If it were me, I would get new tires... not worth risking my life over.
If it were me, I would get new tires... not worth risking my life over.
Melting Slicks
Joined: Sep 2006
Posts: 2,041
Likes: 4
From: Rockford Illinois
It's not a good idea to ride on tires that have been sitting that long. Usually the tire gets very hard and looses flexibility. It will start to develop stress cracks very quickly. Tires have a shelf life, but it varies per tire.
If it were me, I would get new tires... not worth risking my life over.
If it were me, I would get new tires... not worth risking my life over.
If the tires are in a garage where the temps vary form hot to cold, moisture etc, they can dry rot within a years time. I would pass on those for safety etc.
Thread Starter
Intermediate
Joined: Oct 2006
Posts: 47
Likes: 0
From: Enon Ohio
Tech Contributor
Joined: Oct 1999
Posts: 41,058
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From: Charlotte, NC (formerly Endicott, NY)
They are also run flat tires so dry rot in the normal sense probably isn't as big of an issue. The dry rot affects the rubber. With the run flats you could have a hole in them the size of a half dollar and the tire would not be flat. I would prefer them without dry rot but back in 99 I actually wore out a set of GY EMTs that I bought used after sitting on a loading dock in the hot Georgia sun for 2 years and they had some dry rot when I bought them.
Bill
Bill
Racer
Joined: Feb 2007
Posts: 431
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From: Chico CA
One of my friends who farms, and thus has old tractor tires around, looked into this a while back. He came up with a statement from Michelin (I think - big tire company, and Michelin sticks with me) saying that something like five to eight years was their recommendation for changing tires if they don't wear out. They just begin to deteriorate.
The tires on my Shelby have been on it for 15 years or more. They aren't cracking, but the rubber has gotten really hard. When you do a burnout with it, it leaves powder instead of black marks on the pavement. BFG Euro T/As, so they had a fairly soft compound to begin with.
If in doubt, check with a local independent tire shop, and take a sample with you. In a nearby city, a guy named Bob owns one. His slogan is "Less Schwab - More Bob!"
The tires on my Shelby have been on it for 15 years or more. They aren't cracking, but the rubber has gotten really hard. When you do a burnout with it, it leaves powder instead of black marks on the pavement. BFG Euro T/As, so they had a fairly soft compound to begin with.
If in doubt, check with a local independent tire shop, and take a sample with you. In a nearby city, a guy named Bob owns one. His slogan is "Less Schwab - More Bob!"
Race Director
Joined: Dec 2000
Posts: 19,304
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From: San Diego CA
The general rule of thumb is 6 years before getting rid of the tires. However, as Bill mentioned, runflats really cannot lose control during a blowout, at least not easily. Still, they are probably even harder than they were when they were new, so you are in for some kidney pulverizing!
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Verdad Gallardo
Le Mans Master
Joined: Feb 2002
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From: Waldorf MD
The general rule of thumb is 6 years before getting rid of the tires. However, as Bill mentioned, runflats really cannot lose control during a blowout, at least not easily. Still, they are probably even harder than they were when they were new, so you are in for some kidney pulverizing!
6 years IS the industry standard, but how they are stored matters. Out of sun and away from electrical motors (ozone) helps. Bagged is best (but who does this?).
Melting Slicks
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From: pawleys island sc
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