Does any body have tire rubbing problem ?

Discussion in '2007+ Mustang GT500 Tech' started by Vaxman, Apr 17, 2009.

  1. Vaxman

    Vaxman Guest

    Hi,

    I just finish installing FORD M-5300-L lowering kit on my 2008 GT500 conv. I also have a set of Razor 20x9 with 6" backspace on 255/35 ZR20 in front and 275/35 ZR20 in the back. I have base this mods on the 2007 40th 40th Anniversary Shelby GT500 edition

    I was told that this should work find by Shelby Performance Parts, but after doing some mesument my rear driver wheel only have about 3/4" clearance for the top of the tire and the rear bottom fender opening and him not setting in it ???. Also the wheel come out about about 1/2" also.

    Question: Does anybody else have this setup ?? and if so are you having any tire rubbing problem ??

    Thanks

    Vaxman
     

    Attached Files:

  2. Rangersfan

    Rangersfan forum member

    903
    8
    how's the spacing on the other side's tire? Looks like you might need an adjustable panhard bar to recenter the axle.
     
  3. Vaxman

    Vaxman Guest

    The spacing is dead on. I have install a ajsutable panhard.

    Thanks
     
  4. Rangersfan

    Rangersfan forum member

    903
    8
    Another thing to look at, did the shop put the right tire and rim in the right spot? I actually had a customer that had this problem because the person that did the install didn't see the slight difference in offsets on a Shelby rim. Just throwing that out there.
     
  5. TOWGUNNER

    TOWGUNNER forum member

    549
    0
    Did you ever get it figured out?
     
  6. redfirepearlgt

    redfirepearlgt forum member

    2,172
    74
    I have run Shelby Razors on two cars in a staggered 18x9/18x10 setup. With 285/40/18's on the rear (stock 07-09 GT500 tire size) mine sat in tighter than your setup. The 18x10 offset was 7.1BS/+45mm offset. The 20x9 rear wheels you are running are 6.2"/+24mm offset which is why they sit out further. With the larger 275 wheel this only magnifies that. See the photo below and while I was only running an 18" wheel setup the offset relationship is virtually a 1:1 in comparison. I suggest purchasing a set of 20x10's or going to a more narrow wheel. American Muscle is currently running a sale on the 20x10 chrome razor at the moment BTW. It is a 7.2" BS/+48mmoffset and will resolve your problem while being compatible with the existing 275 series tire you have.
    [​IMG]

    For further reference I currently run a 20x10.5" with 7.1"BS/+45mm offset on the rear with 305/30/20's that run as tight under the rear wheel well as you show with your 275's. See below. This should answer your questions.

    It pays to ask more than just "will they fit" when buying after market wheels. What one person considers "fitting" another person won't. Sadly most sellers won't take a wheel back once it is mounted. But who buying a new wheel wants to receive it with witness marks that it has been on another car? That is why it is crucial to do your homework.
    [​IMG]