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Old 12-25-07, 02:53 PM   #1
simongrant
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tyre size?

Hi group,
I currently have 26x1 3/8 tyres on my comfort bike,does this mean all new tyres i put on have to be this same size?

Regards

Simon
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Old 12-25-07, 02:59 PM   #2
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They can differ in width, but they do need to be 26
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Old 12-25-07, 05:50 PM   #3
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Originally Posted by simongrant View Post
Hi group,
I currently have 26x1 3/8 tyres on my comfort bike,does this mean all new tyres i put on have to be this same size?

Regards

Simon
Have a look on the tire for and ETRTO size. It will be a 2 digit number followed by a 3 digit number (47-559 or 23-622 for example). The first number is the width of the tire. This you can vary but is limited by the width of the rim (Sheldon's site has a good chart for this). The second number is the Bead Seat Diameter (where the tire hooks onto the rim). This number you must match exactly. No wiggle room here.
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Old 12-25-07, 05:58 PM   #4
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Make sure you look for the ETRTO size as there are two distinct sizes of 26x1 3/8 tires in addition to a 26x1.375 size tire. Bead seat diameters are 590 mm, 597 mm and 599 mms. Roger
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