Tire Size vs. Wheel Width ?

I have to say that the tires on @steve340demon 's car look pretty badass but yeah, I think the general consensus is right on in this thread. 8" technically will hold a 295 tire but you're far from the optimal contact patch, meaning that you're accelerating a bunch of tire mass that you're not putting to good use.

To some degree this is going to depend on the intended use and the design of the particular tire. Personally, I'd want a 10" wide wheel before I even thought about a 295. I am running a square 285/35/19 setup on my Mustang with 9.5" wide wheels. The sidewalls are holding up, the tread is wearing pretty well...but even this is technically less than ideal.

Bridgestone RE-11 18k miles.jpg