Post up your "big wheeled" cars...AKA...17's or larger AND ADD YOUR BACKSPACING INFO!!!!!

Discussion in 'Suspension, Steering, Brake & Wheel Topics' started by CarNDrvr, Mar 9, 2009.

  1. boostedRS

    boostedRS New Member

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    i love this. I right down to the color of your car. I would like those wheels!
     
  2. Rick Figus

    Rick Figus New Member

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  3. Rick Figus

    Rick Figus New Member

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    With no modification? Besides rolling the rear fender. No rubbing . It looks awfully tight
     
  4. UMI Tech

    UMI Tech Member NazstyZ28 Sponsor

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    Wheels look great! Have you tried the rears on the front? We are trying to decide if the fronts will have trouble at 18 x 9.5 with 5.5 BS. On a '71 Trans Am.

     
  5. C4Racer

    C4Racer Veteran Member

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    I think that is going to depend on a bunch of things like UCA type, sway bar, camber, ride height. Seems most running 275 run a 5.75-6” bs but 5.5 gives you more swaybar clearance at the expense of potential inner fender issues. Depends on ride height. That hugger orange car is lower than mine is. Seems lower than most.
     
  6. Ls3rs

    Ls3rs New Member

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    Just got my 18x10’s mocked up and it’s looking pretty tight. I’m wanting to run a 295/40 but I am concerned that the tire bulge will hit the leaf spring. I could settle for a 285/40 if it would make the setup work. Any opinions on how much the tire will stick out past the rim? I’ve seen 275/35 on a 275 rim but it looked at bit stretched.
     

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  7. C4Racer

    C4Racer Veteran Member

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    What year is the car ? What backspacing did you get?

    I just ordered rocket attack in 18x10 6” bs for a 71.

    I had 295-40-17 before on 17x9.5s with I believe 5.75” bs and they fit just fine. Al stock fender and inner fender.
     
  8. Ls3rs

    Ls3rs New Member

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    It’s a 1972, stock fenders and tubs. The backspacing is 6.2 as recommended by Weld Racing. I may try the 285/40 and if it hits then I may have to use a 1/4” spacer, until I can afford the Speedtech torque arm setup and eliminate the leafs
     
  9. C4Racer

    C4Racer Veteran Member

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    6.2 seems too far in to me. But 285 should fit either way. You can always run a 1/4" spacer.
     
  10. sandiego74

    sandiego74 Veteran Member Lifetime Gold Member

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    XXR 531’s in 18x9.5” with 5.625” of backspacing after using a 1” adapter up front and 18x11” with 5.87” of backspacing after using a 1” adapter. 275/35/18 Falken Azenis RT615K+’s up front and 315/30/18’s in the rear.

    While the rears fit without modification, I beat the seatbelt humps in with a sledgehammer for good measure. The fronts also don’t rub while driving normally around town, but I’m sure they will when autocrossing.

    BF2D86CD-5BF0-42F3-82F2-BA17D88C590A.jpeg
     
    Last edited: Feb 10, 2019
    roadrace2, z28cp, John Wright and 2 others like this.

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