Originally Posted by lindrone
Would I have any problem fitting a mountain bike tire on these trainers instead of a road bike?
No, but the noise from training with knobby tires could be quite loud. Depending on the width of your rims, spring for some Perfomance 26" x 1.25 road tires. 1.5 if you have wider rims. Don't forget you'll need a smaller diameter tube to go with the tire.