If you have 27.5 mountain bike wheels, and you want to put some slick road tires on them, you can do it. In this video I show you which slick road tires are available for 27.5 inch mountain bike wheels. If you have 26 inch wheels, there are a lot more options, but there are still some good tires available for the street if you have a 26 or 27.5 inch mountain bike. If you want to run high-pressure slick tires on your mountain bike, you can do it. I put 27.5 x 1.95 WTB Thickslick tyres on my 27.5 inch mountain bike wheels, and it rolls a lot easier and goes faster with the new road tires than it did on knobby tires.