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Old 07-13-08, 01:52 PM   #1
geo8rge
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The Hidden Danger - New Old Tires

This is an article about car tires:
The Hidden Danger - New Old Tires
http://www.consumerwarningnetwork.co...new-old-tires/

Is this a car only issue?
Is there any way to determine the age of bicycle tires?
Do any brand that have they age on them?
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Old 07-13-08, 02:14 PM   #2
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This would be harder to happen with bicycle tires. When you look at the selection of tires on the shelf at your LBS, they are packaged folded up and the treads exposed. You can see and feel the suppleness of the new rubber and feel the fresh treads stick to your fingers. If you note cracks in the material or they aren't "fresh", I'd just walk away.
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Old 07-13-08, 03:15 PM   #3
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I doubt that bicycle tires would blow out even if dry rotted badly if they hold air.

It's all about heat, mate. Car tires flex billions of times at speed getting warm to hot
to the touch. Bike tires , on the other hand, never go fast enough to build enough
heat to fail. This is also why it's so damn important to keep car tires properly inflated.
To lessen tire flex to hold down tire heat and save gas.
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Originally Posted by krazygluon
Steel: nearly a thousand years of metallurgical development
Aluminum: barely a hundred, which one would you rather have under your butt at 30mph?
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Old 07-13-08, 03:20 PM   #4
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Quote:
Originally Posted by Tightwad View Post
I doubt that bicycle tires would blow out even if dry rotted badly if they hold air.

It's all about heat, mate. Car tires flex billions of times at speed getting warm to hot
to the touch. Bike tires , on the other hand, never go fast enough to build enough
heat to fail
. This is also why it's so damn important to keep car tires properly inflated.
To lessen tire flex to hold down tire heat and save gas.
Where's Chuck?
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Old 07-13-08, 03:33 PM   #5
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". Bike tires , on the other hand, never go fast enough to build enough
heat to fail."

But rim brakes on a long mountain descent can cause tires to heat enough to fail!
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Old 07-13-08, 04:20 PM   #6
DieselDan
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Quote:
Originally Posted by Bill Kapaun View Post
". Bike tires , on the other hand, never go fast enough to build enough
heat to fail."

But rim brakes on a long mountain descent can cause tires to heat enough to fail!
Ask Joesba Beloki and his career. I think Lance crapped his pants that day as well.
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Old 07-14-08, 09:05 AM   #7
geo8rge
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Maybe the results aren't as catastrophic as with cars. But I wonder if the usable lifetime of a bike tire is reduced by the age in storage? In other words is that tire sale really giving you value.
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2000 Montague CX, I do not recommend it, but still ride it.
Strida 3, I recommend it for rides < 10mi wo steep hills.
2006 Rowbike 720 Sport, I recommend it as an exercise bike.
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Old 07-14-08, 11:37 AM   #8
Nightshade
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Quote:
Originally Posted by Bill Kapaun View Post
". Bike tires , on the other hand, never go fast enough to build enough
heat to fail."

But rim brakes on a long mountain descent can cause tires to heat enough to fail!
Riding the brakes are not part of the question about tires. If that is part of the question then
ANY tire will fail.
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My preferred bicycle brand is.......WORKSMAN CYCLES
I dislike clipless pedals on any city bike since I feel they are unsafe.

Originally Posted by krazygluon
Steel: nearly a thousand years of metallurgical development
Aluminum: barely a hundred, which one would you rather have under your butt at 30mph?
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Old 07-14-08, 12:00 PM   #9
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Am I the only one who's ever had a tire blow out on a bike?

I bought some NOS Specialized Nimbus 26" slicks at a swap meet. Mounted them and they felt squirrelly, inspected them and the rear had a bulge. Wasn't sure if maybe I'd missed setting the bead but it went BOOM as I got up to get my tire tools. About 4" of sidewall had blown out and I heard absolutely nothing for about 5 seconds afterward.

The front had developed the same bulge when I came back. Tires were slightly under the 80 PSI max.

I'm pretty gun shy about tires now. Always have my sunglasses on when filling. I also replaced some other older tires after that incident. I think I even have some permanent hearing loss in my right ear.
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Old 07-15-08, 10:16 AM   #10
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On two separate bicycles, I had the peculiar experience of after a long ride and leaving my bike just standing, I came upon a slow leak or actually a flat tire. This happened on more than one occasion for two different tires. The only remedy that seemed to work was a new tire. Is this an example of tire failure?
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