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Posted on Dec 21, 2010
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I am need of new tires. The rims are Mavic, but I’m confused about sizing. The tire is a tubular. I think the size is 27 inch. How to I make sure I get the right size?

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tom sh

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  • Master 1,141 Answers
  • Posted on Dec 21, 2010
tom sh
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If you have a tubular tire (also called a sew-up), and you know that you have full-size wheels (either 700c or 27 inch), you need a 700c tubular. Tubular tires only come in a few sizes and the most common is the 700c. A tubular tire is a unique type of tire that usually has a tube sewn inside. This gives the tubular a round cross section and means that it must be glued onto the rim.

700c and 27 inch are actually different sizes (27 inch is slightly larger diameter than 700c), but they're often confused because they're so close and they're both found on road bikes - or have been over the years. These days, the common road-bike wheel and tire size is 700c. But, people still sometimes mistakenly refer to it as 27 inch, which was popular 25 to 30 years ago.

So, the bottom line is, if you get a tubular called a "27 inch" or "700c," it will be the same size and it will fit your wheel just fine. The size that you don't want is "650c." That size will be too small for your wheels. If you have something besides a tubular tire (if your tires aren't glued onto the rims, you don't have tubulars), to determine the size simply look carefully at the sidewalls. You'll find the tire size marked there if you look closely.

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Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!
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