A 2.5x23in tyre comes out at 28in in diameter whereas the same width for a 22in and a 24.5in rim comes out as 27in and 29.5in. This is just an example of why it's silly to call rims by 26, 27.5 and 29in size.
Also a 700c road bike rim which is the same size as a "29in" rim (622mm) with a small 28mm tyre would have a diameter closer to 26inches!
Feb. 1, 2025, 12:24 p.m. - Glass
A 2.5x23in tyre comes out at 28in in diameter whereas the same width for a 22in and a 24.5in rim comes out as 27in and 29.5in. This is just an example of why it's silly to call rims by 26, 27.5 and 29in size. Also a 700c road bike rim which is the same size as a "29in" rim (622mm) with a small 28mm tyre would have a diameter closer to 26inches!