My Right rear wheel rubbing...

Discussion in 'Suspension, Steering and Chassis' started by H2obuffalo, Apr 16, 2018.

  1. H2obuffalo

    H2obuffalo Active Member

    Messages:
    26
    Likes Received:
    23
    Joined:
    May 29, 2017
    Location:
    Oakley CA
    Local Time:
    8:36 AM
    I recently replaces the shocks in my 72 Swinger with KYB Gas adjust. When I bought he Car had Air shocks on the rear complete with bike pump nozzle. They still held air but were super soft and bouncy...awful. After I replaced them the car sat a bit lower but the right wheel would rub on the inside fender well. We rolled the fender out a tad old school with a baseball bat and that stopped the rub but when i hit a dip or a good bounce the wheel rubs a quick hit.
    I think the culprit is the 15 inch back wheels. They have 205 65 r15s.
    Are these just too wide? I really like the wheels. they are 70's vintage centerlines and look GREAT!. can I put a more narrow tire on the 15's or is this a shock and leaf spring issue?
    your thoughts and ideas are appreciated
    Cheers!
     
  2. j par

    j par Well-hung Member

    Messages:
    8,808
    Likes Received:
    2632
    Joined:
    Jul 2, 2014
    Location:
    Portland Oregon
    View My Photos
    Local Time:
    8:36 AM
    It's definitely a leaf spring issues. Your handle water buffalo kind of leads me to believe that you're not a skinny guy? LOL it all depends on the weight and load and maybe you have a strong motor that's transferring wait and it rubs when you get on it? Or go over bumps? But definitely the shocks are to slow down the up-and-down motion not to create a up or down motion.
     
  3. moparmandan

    moparmandan FABO Gold Member FABO Gold Member

    Messages:
    819
    Likes Received:
    392
    Joined:
    Jun 28, 2017
    Location:
    Central FL
    View My Photos
    Local Time:
    11:36 AM
    Yeah we tried the old school air shock fix for a while. It's an unsafe bandaid. Just bit the bullet:
    Before:
    20170325_111151.jpg
    After:
    20180403_170935.jpg
    No more rubbing or danger of having the air shocks blow and have a big problem.
     
  4. moparmandan

    moparmandan FABO Gold Member FABO Gold Member

    Messages:
    819
    Likes Received:
    392
    Joined:
    Jun 28, 2017
    Location:
    Central FL
    View My Photos
    Local Time:
    11:36 AM
    20180311_181448.jpg 20180222_205739.jpg
     
  5. j par

    j par Well-hung Member

    Messages:
    8,808
    Likes Received:
    2632
    Joined:
    Jul 2, 2014
    Location:
    Portland Oregon
    View My Photos
    Local Time:
    8:36 AM
    Think about the word shock absorber? It's absorbing the shock that the suspension takes. It doesn't raise or lower your car unless it is an air shock that you can blow up.
     
    • Agree Agree x 1
    • H2obuffalo

      H2obuffalo Active Member

      Messages:
      26
      Likes Received:
      23
      Joined:
      May 29, 2017
      Location:
      Oakley CA
      Local Time:
      8:36 AM
      Yup that was my understanding, So does anybody know what the narrowest tire size available for 15" centerline wheels that will function well with the 195 70 14's up front?
       
    • j par

      j par Well-hung Member

      Messages:
      8,808
      Likes Received:
      2632
      Joined:
      Jul 2, 2014
      Location:
      Portland Oregon
      View My Photos
      Local Time:
      8:36 AM
      Yeah I'm out on that question. I have a duster so I have a lot more rear wheel space.
       
    • j par

      j par Well-hung Member

      Messages:
      8,808
      Likes Received:
      2632
      Joined:
      Jul 2, 2014
      Location:
      Portland Oregon
      View My Photos
      Local Time:
      8:36 AM
      When I first got the duster it did rub with its cheap worn out slant 6 rear leaf springs and I cured it temporarily with some $79 air shocks. Like already stated it's just a temporary fix but it may get ya there for now.
       
    • 72bluNblu

      72bluNblu FABO Gold Member FABO Gold Member

      Messages:
      8,754
      Likes Received:
      2685
      Joined:
      Nov 28, 2008
      Location:
      NorCal
      Local Time:
      8:36 AM
      It's not that the tires are too wide, it's that the backspace on those rims is totally wrong. Being Centerlines they probably have very little backspace, because with the right backspace you should be able to fit 245/60/15's on a '72 Dart, especially if you already rolled the quarter lip back a bit.

      Narrower tires depends on how wide those rims are, if they're 7" wide rims you may not be able to go narrower. For example, a 195/70/15 isn't supposed to be mounted on anything wider than a 6" rim.

      So, your options are to buy a new set of springs that will raise the back of the car so the tires don't rub, or buy a set of rims that have the proper backspace for your car. Something in the ballpark of a 15x7 with 4.25" of backspace would be a much better start, although that will depend on what rear axle you've got and what bolt pattern axles and brakes you have.
       
    • Dana67Dart

      Dana67Dart Most undignified way to get to Colorado!

      Messages:
      1,156
      Likes Received:
      381
      Joined:
      Jul 16, 2017
      Location:
      Northern Colorado
      Local Time:
      9:36 AM
      Quick question...
      is the rear the original rear?
      what is the back spacing of the center-lines?
      has any of the rear suspension been changed IE spring perches, spring mounts moved etc.?

      You originally stated that the inner fender panel is where it was rubbing than said you used a baseball bat to roll the fender lip.

      Is the rub on the inside of the tire to the inner fender or the outside of the tire to the outer fender lip?
       
      • Like Like x 1
      • H2obuffalo

        H2obuffalo Active Member

        Messages:
        26
        Likes Received:
        23
        Joined:
        May 29, 2017
        Location:
        Oakley CA
        Local Time:
        8:36 AM
        Its tge original 7 1/4" rear...sigh, spring perches are un modified. The outside of the tire rubs the fender in big dips. After reading all of your posts and running a ruler around the spaces. I have come to the conclusion that the 15" rear centerlines have too shallow of a bowl to use on my swinger and stick out just a bit too much. Looks like Ill have to find myself a set of ralleye wheels to swap them out. Im sure ill find a good home for them. I'm not going to cut open any wells so thank you all for the information.
        Theres a picture of the paint on the tire.

        20180416_174252.jpg

        20180416_190618.jpg
         
      • 69_340_GTS

        69_340_GTS Well-Known Member

        Messages:
        2,894
        Likes Received:
        900
        Joined:
        Jul 11, 2014
        Location:
        Torrington, CT
        View My Photos
        Local Time:
        11:36 AM
        I agree, wrong wheels. You ought to be able to put a 225/60 or 235/60 tire on it with no rubbing anywhere without modifying anything. Like 72bluNblu stated, a 7" wheel needs 4.25-4.50" backspacing to work with stock springs and no other modifications.
         
      • moparmandan

        moparmandan FABO Gold Member FABO Gold Member

        Messages:
        819
        Likes Received:
        392
        Joined:
        Jun 28, 2017
        Location:
        Central FL
        View My Photos
        Local Time:
        11:36 AM
        Hold on now!
        Have you considred r/r on the 7.25 diff? We replaced ours with a shortened furd 8.8 while we were doing the springs and gained all kinds of room on the outside. Got closer to the spring on the inside, but that can be adjusted with a spacer. We have 215 70r15 on there now but could easily go 235 I think. Just a thought. You get a better gear ratio and disc brakes........

        Edit: uhhhh is that small bp? Well, nevermind, haha. Enjoy the Ralley's!
         
        Last edited: Apr 18, 2018
      • Mopar Tim

        Mopar Tim FABO Gold Member FABO Gold Member

        Messages:
        13,504
        Likes Received:
        6288
        Joined:
        Nov 29, 2014
        Location:
        vista CA.
        Local Time:
        8:36 AM
        I will have a nice used set of rear springs for sale soon. 340 springs, nothing wrong with them. Pm if you need.
         
      • 71DodgeDemon340

        71DodgeDemon340 FABO Gold Member FABO Gold Member

        Messages:
        2,083
        Likes Received:
        377
        Joined:
        Apr 2, 2011
        Location:
        Tennessee
        View My Photos
        Local Time:
        11:36 AM
        What type of wheel setup is on the rear? Have you made sure the wheels are the same offset? The two rallyes on the back of my demon are about 1/4” difference. Im using sbp to lbp adapters in the back anyway, one side uses a 1” adapter while the other side is a 3/4” adapter and both sides are the same distance from the springs, the one odd backspace wheel even has the valve stem set in farther, one side my cap protudes the beauty ring and the other side is almost flush but sticks out a hair past the beauty ring. Just a thought
         
      • H2obuffalo

        H2obuffalo Active Member

        Messages:
        26
        Likes Received:
        23
        Joined:
        May 29, 2017
        Location:
        Oakley CA
        Local Time:
        8:36 AM
        Hi again, so after much consideration I have found the simple solution for me goes as follows. I got a set of steel wheels from a fellow mopar brother. They came from a similar year gold Duster. Cleaned them up. Sanded, primed and painted. The back space is over 4 inches on the steel. It is amazing what can be done when my budget forces my hand. Wow what a difference. No more thumps and scary scrub-jerks. The taller slightly skinnier tires act like part of the suspension (as likely they were designed to duh!) This should hold me over until I can get proper suspension upgrades. 340 springs and sway bars. Plus it now looks like a drag car. Love em.
        Think I'll do the front to match.
        Thanks again for all the advice.
        Cheers!
         
      • H2obuffalo

        H2obuffalo Active Member

        Messages:
        26
        Likes Received:
        23
        Joined:
        May 29, 2017
        Location:
        Oakley CA
        Local Time:
        8:36 AM
        Ah...the photo. IMG_24052018_062518.jpg