Originally Posted by
Glennfordx4
The only real problem I could see is even if the tire fits the rim if the rim is not wide enough the proper tube for the tire would be more likely to get a pinch flat as when you pump it up it would become more of a tear drop shape rather then round or oval.
No, actually if the rim is too narrow the tire will not be as stable on turns, as it will be squeezed to a different, much higher profile than designed.