1972 swinger tire sizes, ansen sprints

Discussion in 'Tires and Wheels (Mopar Hubcaps Too)' started by black_bishop, Sep 12, 2017.

  1. black_bishop

    black_bishop Well-Known Member

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    Ok folks, just a quick question. I have 3 15x8 ansen sprints with 4.5 inch bs. Should I get another 15x8 or should I get two 15x7 with 4 inch bs? What size tires are people running with a similar setup? I have a ford 8.8 cut to stock size and hd springs in stock position. Also have pst torsion bars up front.was thinking about 275-60/15 in the back. would these fit stock location springs on a swinger? any help would be greatly appreciated.
     
  2. 72bluNblu

    72bluNblu FABO Gold Member FABO Gold Member

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    You'll need the 15x7's up front, and really you'd be better off with 4.25" of backspace like the OE mopar 15x7's had. With a 15x7 and 4" of backspace you'll probably only get a 215/60/15 in there. 225/60/15's on those rims would be closer to the fender than my 275/35/18's up front, so 225's are out unless you want to modify the fenders a bunch. And 215/60/15's aren't recommended for a 15x8, so, go with 15x7's.

    In the back the 15x8's with 4.5" of backspace should be ok, but with the springs in the stock locations you won't get 275/60/15's in there. About the widest you can go on a Dart with the stock spring locations is a 255/60/15, and that doesn't even fit on every car. Most need to trim the quarter lips to keep 255's from rubbing. 245/60/15's are probably the widest you want to go unless you're willing to cut/roll the quarter lips. And the backspace will depend on what how wide that 8.8 is, I know you say "stock width" but stock A-body 8 3/4's with SBP are about 11/16" narrower than when they're fitted with BBP axles, and 7.25/8.25 A-body rear axles are over an inch narrower than the SBP 8 3/4. So, how well that 4.5" backspace will center things really depends on exactly how wide that 8.8 is.
     
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    • black_bishop

      black_bishop Well-Known Member

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      72blu, thanks for such a concise answer. it was much more helpful than i thought i would get. the 8.8 has disk brakes as well. I may just go with a 235 tire just to be sure i have clearance unless a 245 would definitely fit.
       
    • 72bluNblu

      72bluNblu FABO Gold Member FABO Gold Member

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      245's will fit most of the 70+ swingers with stock spring locations, but whether they'll fit with that backspace depends on the axle width.

      Do you have a measurement for the width of that 8.8 from wheel mounting surface to wheel mounting surface? Every car is a little different because of the body tolerances on these cars, but if you can get that measurement I should be able to give you a better guess.
       
    • toolmanmike

      toolmanmike Pro Mod(erator) Staff Member FABO Gold Member

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      I have 15x7's on the rear with a 4.25 backspace and 255-60/15 tires. They fit but real tight to the quarter panel on one side. I also have a extra leaf in the springs which helps a bit. 001.jpg
       
    • black_bishop

      black_bishop Well-Known Member

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      it'll be a few day before i can that measurement. i had it written down somewhere but now i cant find it of course