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    Results 1 to 6 of 6
    1. #1
      Join Date
      Aug 2021
      Posts
      4

      72 Lemans Sport wheel and tire size help

      Looking to upgrade my wheels to 18x8 with 4.5" BS front with a 245/45/18 tire and 18x9 with 5" BS with a 295/45/18 tire. Suspension is pretty much stock. Does anyone think I'll have any issues with this set up?

      This is my current set up, fronts 17x8 with 4.5" BS with 235/45/17. Rears 18x9 with 5" BS with 275/40/18.
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    2. #2
      Join Date
      Oct 2004
      Posts
      2,450
      Country Flag: United States
      I've heard people run your current 275/40 18x9s rear setup on the front with 6-8mm offset (~5.25 backspace). Have you tried doing a temporary swap to check the fit? Same height as the 245/45R18 and over an inch more rubber. For the rear, since it's 1/2" per side difference from now, measure the clearance and it should give you a pretty good idea.
      Red Forman: "The Mustang's front end is problematic; get yourself a Firebird."

    3. #3
      Join Date
      Aug 2021
      Posts
      4
      Quote Originally Posted by 68Formula View Post
      I've heard people run your current 275/40 18x9s rear setup on the front with 6-8mm offset (~5.25 backspace). Have you tried doing a temporary swap to check the fit? Same height as the 245/45R18 and over an inch more rubber. For the rear, since it's 1/2" per side difference from now, measure the clearance and it should give you a pretty good idea.
      I didn't think about that, but it's a good idea. Thanks!!

    4. #4
      Join Date
      Oct 2004
      Posts
      2,450
      Country Flag: United States
      Quote Originally Posted by chaotic73 View Post
      I didn't think about that, but it's a good idea. Thanks!!
      Welcome! If it works out, something to consider would be running the same combo all around so you can rotate tires.
      Red Forman: "The Mustang's front end is problematic; get yourself a Firebird."

    5. #5
      Join Date
      Apr 2014
      Location
      Cortes Island, BC
      Posts
      25
      Country Flag: Canada
      Did you try the rear to front experiment? I’m working out sizes for a ‘68 Beaumont Wagon, same A-Body chassis.

      I’m wanting to go with 255/55R18s square, if they’ll fit.

    6. #6
      Join Date
      Aug 2021
      Posts
      4
      Quote Originally Posted by darguy View Post
      Did you try the rear to front experiment? Im working out sizes for a 68 Beaumont Wagon, same A-Body chassis.

      Im wanting to go with 255/55R18s square, if theyll fit.
      No, I didn't. I actually went with a totally different set up. Went with 17x8 in front with 225/50/15 & 17x9 in the rear with 275/50/17.