Tyre sizes and rims

Page may contain affiliate links. Please see terms for details.

gaz

Cycle Camera TV
Location
South Croydon
We need to know what rim your wheels has. The width between the rim walls is what will determine how small or large you can go.

But if you have 45 on atm the moment the smallest you can probably go is 28, at a stretch 25 but i wouldn't recommend it.

Source = Sheldon Brown
 
Top Bottom