i converted my old MTB to a kid-trailer puller, got some schwalbe big apples to put on it , they are some fine and comfortable tires. got the 26 x 2.125 size but they have narrower sizes. if you look around the net you will find a lot of positive reviewes on these that is what led me to get them, they were about 40 bucks each but i figure they will last me a nice long time so worth the money.