[GrantB]

I'm sure this has been covered here before, but here goes.

How can tire sizes, even within the line of one company, be so divergent and inconsistent? I put a 2.1 on last night which is substantially narrower than the 2.0 it replaces, both made by the same company. What am I not understanding about tire size?

 

[DM-SC]

Good question

It seems that the Global Metric measurements are more accurate than the inch one. It's hard to understand how they can put "2.1" on a tire and it's narrower than a 1.95...