Just be careful about the first number, the diameter of the tire. I recently bought a tire labeled 26" and it was too big for my 26" wheel. Turned out you gotta match the metric designation, given as so many mm's, out beside the English designation. Like (694.) 26" tires can have a number of different metric designations. Tire sizing can be very confusing as the standards are somewhat muddled.
I know this is probably more than you wanted to know, but it might prove useful.