Front Rubbing - Tires, Suspension or Wheels?

mosleyme said
What your tire "expert" does not realize is that diameter makes a huge difference on the wheel clearance to the suspension on the front. 15" wheel is limited to 4.5", 16" is limited to 5.0", 17" is limited to about 5.5", and 18" is limited to when the tire hits the frame at full lock. Each increase in diameter allows you to clear more. 15" is limited by UCA, 16" is limited by the UBJ, 17" is limited by the OTR. 18" definitely clears the OTR... I was test fitting 18" today on the front with 6.5" backspacing.

:sign3: Exactly this. Most of the 17's can get away with 5.6" of backspace, but that's dependent on the style of rim. I've heard of 17" rims that needed to be spaced out to 5.5", and others that worked at 6" of backspace. 18's are good up to about 6.5" of backspace. Much beyond that you'll start running into frame clearance issues. But 72BBswinger had a 275/35/18 on an 18x9 with 6.5" of backspace and didn't hit the frame.

As far as the rear end, an 11" diameter brake just means that someone put B body brakes on it. I have 11x2.5" drums on my Challenger, EL5 Dart (which has an A body 8 3/4), and my Duster. All they require is a BBP axle, they'll work in any housing. 49" backing plate to backing plate isn't that far off an A-body measurement. 52 5/8" is the flange to flange measurement for an A body, but keep in mind that the backing plate to backing plate measurement will be less than that. I get ~49.5" doing a quick measurement on my Dart, it has an A body 8 3/4 with 11x2.5" brakes. Problem with the backing plates is they aren't flat, so you can measure to different places and get different #'s.

I'd be that your axle is either an A-body rear that was converted to BBP axles, or one that was narrowed to A body specs (or very close to it).

And the 15x10 with 5" backspace pretty much says the same thing based on how it fits, looks like it sticks out a bit. Which would be about right for a stock length axle.

I'd get the 18x9.5 AR TTII. They come in two backspaces that would be useful, either 5.25" or 5.5". I would bet that the 5.25" backspace 18x9.5 would be about perfect. But if you tell me how much clearance you have on the inside of that 15x10" wheel I could tell you exactly what you need. I just need the size of the tire on it and what the distance is to the first thing that it would hit.