Subject: RE: Wheel selection: aero vs weight clinchers are tires with a tube that have a bead around the outside of the tire, when inflated the bead holds the tire to the rim they use tubes like a mountain bike, your rims more than likely are clinchers. Tubless i believe are tires that are glued to a rim designed for that type of tire, i do not believe they use a tube at all but i could be wrong as i have never used them. they are traditionally lighter than clinchers. hope this helps and if i am wrong please correct me. here is a artivle i got from bike magazine: TUBELESS DEFINED As the name implies, a tubeless system lacks an inner tube. There are, however, a couple ways to achieve that end. The first is by going with the original tubeless system: UST. The UST standard was developed in a 3-way love fest between Mavic, Michelin and Hutchinson (oh, those crazy French!). At the heart of this system is a rim-bed that features no internal spoke holes through which air can escape. A UST-compatible tire is then mounted onto the rim, inflated to a high pressure (around 60 psi) so that the tire beads lock into the rim and create an air-tight seal and—voila—there you have it. You can now safely lower the air pressure to between 28 and 40 PSI and enjoy the improved traction and control. Edited by Rudedog55 2008-08-13 10:17 AM
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