295/65/15 Drag Radials

Discussion in 'The Hides' started by gsx678, Oct 26, 2014.

  1. gsx678

    gsx678 Well-Known Member

    Anyone running a 295/65/15 Drag radial on their 1970-1972 GS?
    Feedback please.
    Thanks,
     
  2. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    Guess not. That would be a 30.1" tall tire. I know Phil Sedlon runs a P325/50R-15 DR on a 10" wide rim on the rear of his GS.
     
  3. gsx678

    gsx678 Well-Known Member

    Right,
    The 295 is 1 inch narrower and 2 inches taller than the 325.
    I am thinking it will fit but was hoping someone tried them already.
     
  4. dentboy

    dentboy stacy kelevra

    I tried them in my car with mybfrirmds wheels. They fit. I didn't drive it though just in driveway. It was a 15x8 wheel with a 5 inch backspace. It was too close on inner lower wheel tub. Would have fit perfect with 4.50 inch backspace. Don't think would have trimmed inner lip.
     
  5. stg1dom

    stg1dom Well-Known Member

    They rubbed around corners on the outer wheel well with my GS, 10 inch rim, 5 inch back space .
     
  6. sean Buick 76

    sean Buick 76 Buick Nut

    They fit great on my Skylark, i am using a 15x10 rim with 5.5" backspace. I have lots of room.
     
  7. gsx678

    gsx678 Well-Known Member

    Got the tires now I just have to decide on rims.
    I would really like to get a Buick wheel made 15x10 with 5.5 or 5.62.
     
  8. sean Buick 76

    sean Buick 76 Buick Nut

    Get the 5.62, it will put the tire in the middle of the wheel well...
     
  9. gsx678

    gsx678 Well-Known Member

    So here is another question...

    Mickey Thompson says 8-10" wide wheel for these tires.
    8" wheels are a little easier to come across and I measured bead to bead on the tires and get just under 8".
    So I am wondering if I should just go with a 8" rim or if I should go to a 10" rim.
    What do you think?
     
  10. sean Buick 76

    sean Buick 76 Buick Nut

    They will look really

    It just depends on how you want the tire to fill out. Here is a 295/55/R15 on a 15X10 Summit racing wheel, see how the sidewalls are square and the tire is flat on the contact patch? Use a 15X8 rim on the same tire and you will seeit is bulgy and the center of the tire will wear quicker on too narrow of a rim... If you want to go with a 15X8" rim then use a 285/60R15.

    295/55R15:

    [​IMG]

    [​IMG]

    [​IMG]

    Here is a shot of a 15X10 with 285/70R15:

    [​IMG]

    [​IMG]
     
  11. gsx678

    gsx678 Well-Known Member

    After seeing those pics I will go with a 10" wheel.
    Thank you for posting
    :TU:
     
  12. disturbedproject

    disturbedproject New Member

    what size backspacing did you go with? any issues with this setup?
     
  13. sean Buick 76

    sean Buick 76 Buick Nut

    5.5 backspace on the 15x10 and no rubbing with the 295/55R15
     
    Last edited: Aug 28, 2018
  14. buick_racer

    buick_racer Member

    I see some tire websites asking for an "offset" spec in addition to the backspacing. I love the look of the 15x10 with 295/55R15... What offset is it?
     
  15. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    Offset is different than back spacing. Back spacing is measured from the back edge of the wheel to the mounting surface of the wheel. Offset is measured from the center of the wheel to the mounting surface, AND, offset can be positive or negative. Positive offset moves the wheel inward (like increased back spacing), negative offset, the other way. Wheel width is measured from the bead surface to the opposite bead surface. If you measure a wheel from edge to edge, it is actually 1" wider. So, a 15 X 10" wheel is actually 11" wide when measured edge to edge. Therefore, the center of a 10" wheel is at 5 1/2". If the back spacing of such a wheel is 5 1/2", then the offset is 0. If the back spacing was 5 5/8", then the offset would be + 1/8".
     
  16. BrianTrick

    BrianTrick Brian Trick

    Most wheels are offered with backspacing in 1/2” increments. You need at least 5.5” backspace,but 5 5/8” or 5 3/4” would be ideal.
    6” is too much,unless you have a rear disc brake kit with thick rotor hats that eat up some width.
     

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