Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 11-03-09, 04:21 PM   #1
Daspydyr 
Pedals, Paddles and Poles
Thread Starter
 
Daspydyr's Avatar
 
Join Date: Oct 2009
Location: Btw the Mohave desert and AREA 51
Bikes: Santa Cruz Tallboy, Ridley Noah, Scott Spark 20
Posts: 5,368
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 21 Post(s)
Do tires have an "expiration" or age limit?

I found a couple of brand new tires that had been in storage since probably 1995. They were Velociraptors with less that 100 miles on them. Good MTB tires.

I used them for @150 miles, mainly on pavement. I noticed that the outside knobbies were pulling loose. Is that because of the pavement, the age of the tires, both, neither? Should I just trash them at this point?
__________________
I think its disgusting and terrible how people treat Lance Armstrong, especially after winning 7 Tour de France Titles while on drugs!

I can't even find my bike when I'm on drugs. -Willie N.
Daspydyr is offline   Reply With Quote
Old 11-03-09, 04:55 PM   #2
toytech 
Senior Member
 
toytech's Avatar
 
Join Date: Feb 2009
Location: san leandro
Bikes: enough bikes to qualify for Hoarders......
Posts: 1,449
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Well for car tires they should be replaced at 6 years regardless of wear. Bike tires are constructed similarly, and I am sure suffer the same age related decay as do belts and hoses.
toytech is offline   Reply With Quote
Old 11-03-09, 08:08 PM   #3
Al1943
Senior Member
 
Join Date: Feb 2005
Location: Oklahoma
Bikes: Trek 5500, Colnago C-50
Posts: 9,433
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
The rubber and other synthetic materials harden, become brittle, and crack with age. Some tires last longer than others. I've seen printed warnings to replace car tires within 3 years but that seems extreme to me. Mine go longer.
I had a car with old expensive tires that had been stored several years. The treads showed very little wear but two of the tires came apart and blew out at different times while on the highway. I suppose it could happen to old bicycle tires as well.

Al
Al1943 is offline   Reply With Quote
Old 11-03-09, 09:31 PM   #4
Sci-Fi
Senior Member
 
Sci-Fi's Avatar
 
Join Date: Sep 2006
Bikes:
Posts: 1,278
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Depends on how long and where the tires were stored. With the prices for new tires, why not buy/use new ones. Hard to trust tires that has been stored for years. UV, Ozone, cold/hot cycles, and general drying out of the compound compromise the safety factor and grip/handling. From the OP's description, the tires are falling apart at the edges already, so why fool around any longer?

I used some NOS tires I had stored for years for local runs only (5-10 miles max distance) for about 6 months. The air pressure had 'inflate until hard' molded into the sidewall as well as the max pressure...that's how old those tires were (Union Tires...was good stuff back in the day and wore like iron/long lasting block treads). No cracks in the tire or sidewalls, but decided to buy new tires anyways.
Sci-Fi is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 10:06 AM.