[elysdean]

Well over the holidays I got my first flat on my cross bike (damn puncture vine). Anyway when I was changing the tube I noticed that Trek had used road tubes (700 x 19-25) instead of cross tubes. I was told you could use a road tube in a emergency, but that you didn't want to use them in a cross bike for hard riding and racing. What are your opinions on this? I did two races with the road tubes in and never noticed a problem, but if they are more likely to flat or pinch I want them out of there. What is the general wisdom on this matter? Thanks.

Scott

[The BikeForums Team]

This is an archived thread, you can find the full version of this thread, with images, links and more content here.

Ready to buy? Check out these two online bike stores:
- http://www.nashbar.com (you can find the latest bike nashbar coupons in this thread)
- http://www.performancebike.com (you can find the latest performance bike coupons in this thread)

Cya on the forums,
- The BikeForums Team
- http://www.bikeforums.net

[fogrider]

a road tube is lighter, and if you have 30 mm tires or greater, you are more likely to blow out a tire when you get a flat. the smaller tube becomes stretched out almost like a balloon in larger tire size...I would use the correct size tube.