Originally Posted by
HillRider
The 32 mm tire should work fine. I used to have an older Trek MTB that came with 26x2.0 (559-50) semi-knobby tires. When I "streetified" it I switched to 26x1.25 (559-32) street tires and they fit the rims perfectly and rode and handled well. Your proposed size change isn't even that extreme.
We did the same to my son's old Schwinn Sierra, a rigid fork Mtn bike. It's an absolute kick to ride with the narrow tires. Had to buy narrow tubes as well.