Originally Posted by
YonathanZ
I already took measurements between the fork and the current tire, and the same thing with the back wheel. There's a total of 25mm free space in each side, which are a whole inch. The space isn't identical from both sides of any wheel, so I think the wheels might need to be "straightened" or "centered" or something...
Sounds like you shouldn't have any issue with 2+" tires. A very wide range of tire widths can be used on given width rim, so if there are no clearance issues at the frame or brakes you should be fine.
Seems odd that the tire maker would put such speed limitations on tires intended for e-bikes since they don't list such limits for regular bikes. Mine have no motor, but I live in a fairly hilly area so reach speeds of over 50 kmph on almost every ride - and over 80 kmph fairly often. Never had any tire issues related to speed, nor any problems stopping with regular rim calipers.