Five year old article on the "15 inch tire problem"

With 17x8’s and 5.5-5.7” backspace you should be able to pull off 255’s up front if you want. They’d be tight everywhere but as long as you’re willing to do a little rolling or trimming if needed they’d work. It’d be a ride height and individual car thing. And I don’t think that the difference between 255’s and 275’s would be super noticeable for anything much less than all out competition.

Unfortunately even the selection in 17” isn’t what it used to be. Heck even selection in 18” isn’t as good as it was when I bought my RPF1’s. I mean, there’s still options but especially for 295’s the choices are getting pretty small.

On the chassis I don’t think that cage is necessary. Again, maybe for all out competition it would make a difference but on the street it’s not gonna make a handling difference. I’m running 275’s and 295’s with a 200 tread wear compound, 1.12’s and Hellwig sway bars. I’ve got subframe connectors, torque boxes, j-bars and a tubular radiator support brace and the chassis feels rock solid. Now, with my Challenger, 275’s all around, no chassis reinforcement and some rust I sure as heck could. That girl would start feeling spooky when you pushed her on the street, I could tell the stuff between the suspension points was moving around. But the challenger had structural rust so that’s a different story.