The motobecane track can hold up to a 32cc tire i think... i think..

Because, someone at the lbs has the same fork off of the MT and he has a 30cc tire, a 32 will only be 1mm more. The rear, I really dont know.

My rear on the windsor the hour can only fit 30, i was pushing it with the thickslicks witch say 25cc but they are so much wider then that...