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Old 02-27-2007, 12:58 PM   #11
byeway
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Default Re: Tire Replacement and Safety: Prudence or Paranoia?

Seems to me that "Mr. Experience" is glaringly absent here.



Hasn't anyone had a tire failure (due to aging)?



Or maybe all of those who have had such a failure are deceased?
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Old 02-27-2007, 01:06 PM   #12
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Default Re: Tire Replacement and Safety: Prudence or Paranoia?

I'm lucky to get a season out of my tires so it's a moot point I guess. The '02 Bandit I just bought has original tires on it so 5 years old, but they're about toast anyway so I'll be replacing them soon.



I tend to put a lot of miles on my vehicles because I have a 75 mile round trip commute. Car tires I don't worry about too much, I usually buy softer compounds as opposed to the 80k mile tires because it's wet here and hard compounds in the cold and wet aren't the best option.



For bike tires I figure on 10k, either Pilot Roads or Avon Azaro's. I don't buy discounts and the manufacture date is right there on the sidewall so you can check before you buy them anyway.
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Old 02-27-2007, 01:23 PM   #13
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Default Re: Tire Replacement and Safety: Prudence or Paranoia?

1. Really sticky car tires don't last very long either (especialy if your using them - you'll go through them faster than bike tires)



2. "MOrons purchase used bikes every day, often without knowing the history and/or age of their tires." - uh it says the date the tire was made right on the tire..... so only people that don't bother looking don't know the age.



3. On my race bike I change the tires after 16 heat cycles - there's still plenty of rubber left on them (it's a 125cc) but from what I've heard after 16 full heat cycles they start getting quite a bit harder.... not sure how true this is but it seems all the fast 125 guys pretty much agree.
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Old 02-27-2007, 01:36 PM   #14
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Default Re: Tire Replacement and Safety: Prudence or Paranoia?

I think the answer is to ride enough to wear out a set of tires each year. That way you don't have to worry about the tire oxidizing.
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Old 02-27-2007, 01:37 PM   #15
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Default Re: Tire Replacement and Safety: Prudence or Paranoia?

With a stiff upper lip.
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Old 02-27-2007, 01:52 PM   #16
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Default Re: Tire Replacement and Safety: Prudence or Paranoia?

It's pretty simple to me. Tires are a lot cheaper than hospital bills. There are so many environmental factors aside from tread wear and age. Is the bike stored in a hot Arizona garage? Are you running triple digit speeds on poorly paved roads? How many burnouts and/or wheelies on those buns? Frankly I'm surprised 6 years is a suggested time parameter. If you haven't worn out the tread by then, you've probably got cracks and dry rot on the sidewalls. If you're even wondering...replace.
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Old 02-27-2007, 02:08 PM   #17
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Default Re: Tire Replacement and Safety: Prudence or Paranoia?

I know of no real authority on this subject. The problem is that there are lots of rumors started by people that sell tires. Of course the tire company and the bike shop are going to tell you to replace the tires as often as possible.



They'll even tell you that you have to replace both tires with matching tire models each time. Such claims are completely bogus. Don't mix radial with bias tires and don't put a sport tyre on one rim and a touring tire on the other.



I bought a Magna once that had ten year old tires. They looked fine and I put about 3K on them before they wore out. I've had dirtbikes with old tires but never had one blow, even if the rubber was getting cracked from age. I just replace them anyhow. They really aren't that expensive.



Don't ever use armorall. That will destroy any rubber or vinyl. I found this out the hard way by destroying the seat of a brand new bike within 6 months through using armorall. If you just bought a bike from a guy who used armorall to make the tires look good better think about replacing them soon IMHO.



If any of this is going to worry you then just replace them. I'd definitely replace any road bike tire that showed signs of degradation.



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Old 02-27-2007, 02:31 PM   #18
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Default Re: Tire Replacement and Safety: Prudence or Paranoia?

"The Regiment would prefer to have it repaired."
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Old 02-27-2007, 02:32 PM   #19
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Default Re: Tire Replacement and Safety: Prudence or Paranoia?

Yet, the half-life of a styrofoam coffee-cup is something like 10,000,000,000 years...........
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Old 02-27-2007, 02:34 PM   #20
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Default Re: Tire Replacement and Safety: Prudence or Paranoia?

That oxidization is called "Blushing".
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