650b interchangeable with 700?: Triathlon Forum: Slowtwitch Forums

650b interchangeable with 700?

Jul 17, 20 10:06

I have a 2014 CAADX Ultegra with disc brakes. I don't have a mountain bike and have been throwing around the idea of going 650b/tubeless with some beefy tires to conquer some single track (and whatever else I may get into). Is it as simple as buying a new set of wheels and swapping 'em, so long as the tire fits?

@floathammerholdon | @partners_in_tri

Quote Reply

Re: 650b interchangeable with 700? [cloy] [ In reply to ]

Quote | Reply

LOW2000

Jul 17, 20 10:16

Post #2 of 4 (630 views)

Yep, as long as your frame is wide enough to accept the bigger tires you'd be running on the 650 everything else should be fine.

Here is a quick conversion chart to help:
700C x 23mm = 668mm = 650B x 42mm
700C x 28mm = 678mm = 650B x 47mm
700C x 32mm = 686mm = 650B x 50mm

Quote Reply

Re: 650b interchangeable with 700? [cloy] [ In reply to ]

Quote | Reply

logella

Jul 17, 20 12:12

Post #3 of 4 (589 views)

I'd be surprised if a 2014 frame spec'd with 700's would also fit 650's. It's more and more common today but I don't even think it's the majority at this point.

Quote Reply

Re: 650b interchangeable with 700? [cloy] [ In reply to ]

Quote | Reply

avatar78

Jul 17, 20 12:54

Post #4 of 4 (565 views)

This is a good page that explains where to measure on the chainstays etc to see where the main tire width will end up.

https://www.bikeman.com/...conversion-guidlines

It's useful because some bikes have chainstays dimpled for clearance exactly where a 700C tire lands, but otherwise don't really have space where a 650b tire would be.

Quote Reply

Poll

Triathlon Forum

Our Partners

Poll

Triathlon Forum

Our Partners

Newsletter