5 ms·
The ETRTO numbers are the most useful ones. If you just look on them, you're good to go.
by moasda 5y ago
The ETRTO numbers are the most useful ones. If you just look on them, you're good to go.
- wiredfool 5y agoYeah, that 28" number is goofy. In Mountain bike terms, it's a 29er. For road usage, it's 700c. But the rest of the world, at least those who measure in mm, use 622.
- moasda 5y agoYes, the outer diameter is a bit more complicated. From this point of view, some bikes can use different tire sizes.
- usr1106 5y agoThat's what I learned around 1984 from reading a book. 10 years before internet was a thing :) Have ignored all other numbers since then. Have not had any worse problem than some clerk might have given me a strange look when I bought tires referring to ETRTO numbers.