>>1359873> there was the 27in standard, not to be confused with 27in> there's 29er, which is not 29in. It's the same as 700c, which is not 700mm. The C is meaningless.> there's 27.5, which is not 27.5in. It's the same as 650b, which is not 650mm. The B is meaningless.>there's 26, which is not 26in.> road and mtb have different designations for the same thing> literally none of the designations relate to the size of the rim -- the thing that you need to know about to find a tyre to fit around it.Fucking destroy it all and start again.