17" versus 14" tires

Most of the factory Mustang tire sizes were pretty tall, around 27” for most. Typically if you get a set of Mustang wheels with the tires still on them they’re usable in the back, but too tall for the front.

If you’re running decently wide tires up front going too much past 26” for the height gets problematic. I’ve seen skinny drag race set ups with 27” tall fronts, but they were tucked in away from the fenders. Even with a 235 I think getting close to 27” would be an issue.