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Do inner tubes wear out?(8 posts)

Do inner tubes wear out?shockcord
Oct 4, 2003 8:05 PM
When I put new tires on my bike, should I replace the tubes? The front tube has 2000 miles with no flats.
If it ain't broke don't fix it ! nmthe bull
Oct 5, 2003 3:52 AM
.. or patch em till you puke....nmRusty Coggs
Oct 5, 2003 5:11 AM
nm
I like to replaces them every 7 years or 70,000 miles (nm)LC
Oct 5, 2003 9:37 AM
I like to replaces them every 7 years or 70,000 miles (nm)lyleseven
Oct 5, 2003 10:06 AM
LC probably changes the oil in his care every 500 miles too!!!
No, but they do ageKerry Irons
Oct 5, 2003 5:10 PM
Inner tubes last for years. Most common failure mode is valve stem base failure and seam failure. They can be patched over and over without problems. Operator induced failures can result from the tube being pinched by the tire due to improper installation, the valve stem being jerked hard during pumping, and the tube being pinched by a tire lever during removal installation. The failure modes respectively are: tube blows out when the tire is pumped up, premature valve stem base failure, multiple holes from the tire lever. If you only have a pinhole from glass, thorns, wires, etc. you can patch the tire. Anything resulting in tears or missing rubber means throw it away.
Dry rotJimP
Oct 5, 2003 5:23 PM
They may not wear out with age but they do dry rot. I have thrown out unused tubes because they became dry and brittle after sitting for 6-8 years.

Jim
re: Do inner tubes wear out?kanekikapu
Oct 7, 2003 3:09 PM
i generally replace my tubes at the beginning of my racing season. tubes could get sorta cruncky overtime and seeps air faster... and prone to puncutre more easily. i learn my lessons at my first race last year...