The sizes of tubes you need you have quoted correctly. I don't change tubes every time I mount a tire. My front tube probably has 25,000 miles on it. I had one rear tube with about 16,000 miles on it and three tires before I tore the valve stem off it. I was on a fire trail, the tire was aired down too far, and slipped on the rim, tearing up the tube in the process. A learning experience. Again.
I had a rear flat tire Thursday, pulled the tube out, patched it, re-installed it, pumped the tube up, found I had pinched the tube. [it was dark, cold, windy, my self pity meter was pegged, so ya, I mighta pinched it. Sue me.] Pulled the tube again, patched it and put everything back together. That was about 180 miles ago. That tube will stay in there with two patches until it quits holding air or until I put a new tire on, which I hope isn't any time soon.
It is, in many circles, thought to be a prudent safety factor to put new tubes in when installing new tires. I can't argue with that. I'd be buying a dozen new tubes a year. I'm a little too frugal for that. I'm gonna continue living on the edge. If Darwin gets me, so be it. Seriously, many people only ride a few thousand miles a year. In that case, a tire may last them 4, 5, or 6 years. In that situation, by all means, get a new tube when installing a new tire. My stuff all wears out long before the dry rot gets a chance of setting in. Aged rubber scares me when it's all that is between me and the asphalt.
ďmany a trip continues long after movement in time and space have ceasedĒ- Steinbeck, [I]"Travels with Charlie"
[FONT="Century Gothic"][I]Sometimes your only available transportation is a leap of faith[/I] [/FONT]
Last edited by vatrader; 02-06-2011 at 03:59 PM.