Originally Posted by seely
Specialized Fatboy slicks. Kevlar lined, will take 100psi no prob.
I second this. I have the 26x1.25 version from last year on my early 90's mtb, and they are amazing. They have specialized flak jacket tech to ward off flats and are recommended at 90-100 psi. When I put those babies on, it was like riding a different bike. If your current tubes are 1.6 and up, you'll need new tubes, but they are only like $4. So let recap: 2x$20 tires and 2x$4 tubes = $48 for new life and speed in your bike. I'd say it's worth it.
PS: your rims should take them, no problem. If you look right now, you'll have a lot tire sticking out from the side of your rim. If you decide to do 1.25, the tire will be almost as wide as the rim. (or something close to that)