Total Motorcycle Community Forums

olebiker wrote:

jonnythan wrote:
Always use a new tube.

Why?

Because the tubes expand when inflated, and installing an old tube in a new tire will result in folds weakening the tube.

"When fitting a new tire on a tube-type rim, a new tube should be fitted at the same time. Old tubes can become stretched and, if an old tube is fitted inside a new tire, it can crease or fold over itself and fail due to chaffing and thinning of the rubber."
http://www.dunlopmotorcycle.com/infocen ... ?id=11#faq

"A new tube should be used when installing a new tire. Tubes grow in service, taking a permanent set of about 25% larger than the original size. This makes a used tube too large to use in a new tire, which could cause a wrinkle and lead to tube failure"
http://www.desser.com/actubeinfo.html

"Always use a new tube for a new tyre."
http://www.bridgestone.co.in/tyre/tyrecare/tyrecare.asp

"When fitting new TT (tubetype) tyres, new tubes have to be used. Tubes become stretched in service. If a used tube is fitted in a new tyre, it can crease and fail due to thinning of the tube rubber."
http://www.metzelermoto.com/web/product ... ult.page#4

Thank you that proves that you are never too old to learn something new. I have not had tube tires for a long time. When I did I reused tubes and never had any trouble. But I had heard before that you should change the tube as well. Now I know why.

Actually all that proves is that the people who sell inner tubes recommend you buy a new inner tube wen you buy a new tire. Go figure.