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650c Rim swap for a 26 "

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650c Rim swap for a 26 "

Old 01-04-16, 09:30 AM
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650c Rim swap for a 26 "


650c rim 650x23c tires.
Calliper brakes

I wanted to put in wider tires, but unfortunately for my rim I can only find 25c tires.

I borrowed a 26 inch rim (without tire) and fit it in my bike, the fit was good. The brake callipers aligned well.

There seems to be adequate space for a tire, then I mounted 26x1.5 tires and thats where I got stuck. The tire rubs on the upper portion of the fork and rubs the calliper on the rear.

I would like to use this bike for my daily errands and she has stood the passage of time, I wish I could get some wider tires on her.
Could you please recommend some tires which I could mount on the 26 inch rims ?
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Old 01-04-16, 09:45 AM
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I suggest you read this-
Tire Sizing Systems

and then reword your question so it makes sense,
There's about 5-6 DIFFERENT rim diameters for 26" tires.
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Old 01-04-16, 09:47 AM
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There are 26x1.25 tires (559x32) available and those might provide enough clearance. Here are a couple of choices from Nashbar:

Nashbar - Welcome!

Edit: I, perhaps incorrectly, assumed the OP tried a 26" MTB wheel (ISO 559) but as you note there are numerous "26" wheel sizes.

Last edited by HillRider; 01-04-16 at 09:51 AM.
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Old 01-04-16, 09:53 AM
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Unfortunately for you, 650c (571mm) is most often used in time trial and racing bikes where tire clearance is extremely small.

Switching to 26" MTB rims (559mm) will give you a little more room assuming your brakes can make the 6mm drop. Which you say they can. The 26"x32mm tires posted above will help a little. But if you want more clearance for real tires and fenders your only choice is a new frame/fork.
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Old 01-05-16, 12:04 AM
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Thank you for your replies, will certainly give the narrower tires a shot.
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