by dave-r » 07 Jul 2001 14:47
Here are what I think (with my limited understanding of tyre technology) are the MAX tyre sizes that fit these wheel widths.
On a 5.5 inch wheel I would fit a 195 to a 205 tyre.
On a 6 inch wide wheel I would fit a 215 or 225 tyre.
A 7 inch wheel I would use a 235, 245 max.
An 8 inch a 265 - 275 max.
The IDEAL situation is to have a tyre tread width that is just 2 inches over the wheel width. The wall of the tyre can only work as designed if fitted to the correct width wheel. The wider the tyre you fit to a wheel the more the tyre wall moves from the vertical to the horizontal.