19" rear with 18" tube?

4 replies to this topic
  • Phile

Posted July 01, 2002 - 08:16 AM


I just purchased a 19" rear tire and have a new heavy duty 18" tube to put in it. Can I run this combo? Will the tube be too small? Or will it just stretch the extra 1 inch? Any negative or positive effects doing this?

  • motoman393

Posted July 01, 2002 - 08:32 AM


I'm sure it will fit. I always keep a 21" front tube in my toolbox, because in case of a flat a 21" tube will fit the front or the rear tire (18", 19", or 21") I have put 19" tubes in 18" wheels and they work fine...so why not try it? Later,


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  • Kirtwell

Posted July 01, 2002 - 08:35 AM


I had a flat a few months ago and my buddy gave me an 18" tube. No shops open anywhere. Heck with it...i'll try it. It fit perfect and is still on the bike. I didn't see any stretch problems at all.... If you can put the correct one in I'd do that first....otherwise go for it.

  • moto_madman

Posted July 01, 2002 - 12:47 PM


has anyone compared the size of all the different "Full Sized" tubes. I bet they are nearly the same or at least very close.

  • John_Lorenz

Posted July 01, 2002 - 12:50 PM


It will work but realize that the tube will have to be over inflated to accommodate the stretch of the extra needed inch. It will then be more susceptible to pop.

I "Personally" would only do this as a temp solution. That’s my Opinion

Spelll Chk :)

[ July 01, 2002: Message edited by: E.G.O.**** ]

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