Tire Woes Help!!!

Honestly, you'll really need to do two things to get the back tires not to rub. Even after doing these two things, it'll be tight and you may need different springs in the rear to raise it up about an inch.

If you want to keep these tires (they're ~290's), you'll need to roll the outer and probably need to take a bfh and beat the inner wheel well in a bit.

Or you could go completely crazy and mini-tub and shove some 315's under the rear, huh @RaggedGT ?

I do like the centerlines though, that is the style of my first new wheels I bought for a car a long time ago. Plus I like the look of them with the MT's on your mustang.

What ever you do, do NOT put air shocks, or spacers of any kind on the rear of the car. Tires that don't fit, simply don't fit. Jacking the car up in the air to keep them from hitting died in 1976.

You can accommodate a set to a certain degree.....

You could do as some suggested and roll the inner fender lip (Most of us have done that, including your's truly). This allows the necessary room on the outside if that is where the tire is making contact. There are numerous methods out there online that will allow you to do that safely w/ hurting your paint and bodywork. Using everything from a jigsaw, a small sandbag/BFH, a baseball bat, and even a tool/machine/contraption purposely designed to do the job.

You could also "massage" the inner tub if the tire is hitting there w/ a BFH as Dave has also mentioned. If there is clearance between the inner tub and tire, then you have room for the third solution....

Sell those wheels, and get a pair with the correct back spacing that will tuck them under the quarter where they belong.

Finally,...the most radical solution is to get out your cutoff wheels, your Sawzall, your flap wheels, your welder, and your wallet and mini-tub the car to accommodate any size tire up to a 335......depending on how liberal you were w/ the previously listed tools.

Eastwood sells a fender roller. This is what I used and it was worked out well so far as well as bfhing the inner fenders slightly.