Question about Sram 850 8 Speed Cassette 11-32t Mountain Bike
How do I know which bicycle tires tube my wheels need?
Look at the side of the tire for a series of numbers
Posted on Nov 05, 2008
As above but if the numbers are in decimals (26 x 1.1) vs fractions (26 x 1-1/4") you're looking at two different tire standards. The "26's" in this example specify very different rim sizes.
BTW: that number is a loose approximation of the outside diameter of the inflated tire.
Tubes being flexible, you can get away with intermixing them to a degree but tires won't be the same. The second number is an indication of how wide the tire is that it will fit.
Take that "x XX" piece with a grain of salt as it varies widely bewteen tires and manufacturers. One company's 700 x 23(mm) may actually be narrower than another's 700 x 21(mm).
You don't really want to exceed the capacity of the tire to accept the tube when it's inflated so I always aim somewhat to the small side for tubes (they stretch). In fact, to reduce rolling mass you can run smaller or thinner tubes.
Posted on May 03, 2010
Yes, the information should be on the sidewalls of the tire. Good Luck!
Posted on Jun 11, 2009
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Posted on Jan 02, 2017
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