Wheel Size Question.

MoparLeo said
It all boils down to What you want your car to be, A race car or a street car. Do you want everything to fit in the factory wheel openings or are you willing to make body mods. Just saying that it is easy to think you are the smartest guy in the room and recommend things when you are not that guy and can't really know what is in his head as to what he expects. People tend to take something simple and turn it into something complex.
Right off the bat you say that YOU would run a 275 MM tire. What aspect ratio? 30,40,50 ? That will determine the tire and rim diameter. And then the offsets and backspacing would be determined on that info.
The farther you get away from the factory set-up the more your info becomes theoretical.
I would try to make it a simple progression from the stock sizing to maybe explain plus sizing is and how that affects the fitment on a stock suspension. How one change makes other changes mandatory for it to work. Domino effect...
Get back on your box. I just posted charts for people to reference for themselves. It is up to them what they do. It is after all their money that will be spent.

It's even easier to reply to the OP of an old thread that has now gone a different direction. You started talking about Cragars, which is not what 67notchb wants to run. Did you see his post about "bringing back an old thread"? I was answering his questions about the 17" rims he wanted to run already.

He asked about running tires that would clear his stock bodywork, which is where the first mention of 275's came from. 275's will fit on the back of most Barracuda's without modifications to the body or the suspension. Now, when 67notchb gave his car's actual measurements, I recommended what would actually fit his unaltered car. That's not theoretical. That's using measurements to determine what will fit his car.

And based on some of the information I posted, he decided to run 245/45/17's and 255/45/17's on 17x8's. As in, he used the information I gave to make his own decision. So what? All you did was post nonsense about "doing the mods first" before picking wheels and tires.

67notchb posted his intended use of the car and his desire to run 17's with stock bodywork. He had already posted he was using 73+ factory BBP disks and an 8.25" with factory brakes. And then we used his measurements to come up with wheels and tires that will fit his car without body mods. Seems like you're the one that got twisted here.