Originally Posted by Finfan
I've got a 2.125 rim. I doubt a 1.95 tire would fit.
2.125" is probably not the "width" of your rim, it's just a common tire size designation that the rim manufacturer chose to use.
If your rim can fit a 26" x 2.125" tire, then it can probably fit almost any decimal 26" tire you find--from the 1" wide Continental GPs up to the 2.5" wide MTB tires. (if the 2.5" tires will fit in your frame
is entirely another question, tho'...)