Need new tires and suggestions from the group

Discussion in 'Suspension, Steering, Brake & Wheel Topics' started by JD Z, Nov 9, 2017.

  1. SRGN

    SRGN Veteran Member

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    162
    Feb 20, 2009
    Central NJ
    Minitub it and put some nice 315 35 17s out back :)
     
  2. ratpatrol71z28

    ratpatrol71z28 Veteran Member

    1,573
    6
    Mar 29, 2012
    Mantweeka, California
    I actually run 275/60/15 in the rear and my ride is lowered, no problems there. Then 225/60/15 on the front. ALL 4 on the 15x7 Stock Z28 rallies...
     
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  3. Goodwrench1965

    Goodwrench1965 Veteran Member

    873
    23
    Apr 23, 2010
    Charlotte NC
    Ditch the stock wheels for some wider ones for sure. 8 inch on the front nine and a half on the back. There are a lot of economical choices out there to fit the budget. 7 inch rims on the back of a hot rod? Not me.
     
  4. johnnycamaroz

    johnnycamaroz Member

    55
    5
    Jul 22, 2014
    tucson,az
    Honestly the 225/60 255/60 Look Awesome!
    Nice Rake, fits the car really good.
    Here is my car with 245/60 all around this is how i bought it.
     

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  5. Zspoiler

    Zspoiler Veteran Member

    2,746
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    May 6, 2012
    Federal Way, Washington
    I have run P235 6015 s on the front and P245 60 -15 on the 15 x 7 factory Turbine rims. when my car was fairly stock And they fit fine. I run 17`s now It all depends on the "look" of the car ,And your pocket book/Good luck to you, 130044932860518017_26257430996_o (1).jpg
     
  6. Lowend

    Lowend Administrator. .a car, a man, a maraca. Staff Member Lifetime Gold Member

    14,564
    307
    Mar 25, 1999
    San Jose, CA, USA
    OK folks - there are a few reasons not to run a 275 on a 7" wheel


    #1 - tire manufacturers don't recommend it. I'm not talking about truck tires; they are completely different construction). Tire manufacturers spend a lot of money to hire engineers that spend a lot of time figuring out what wheel size works well. You really think you're going to outsmart them by looking at the latest tire ads?

    #2 - Wider tires, by themselves, do not mean more traction. Prove me wrong without quoting an ad campaign. The actual contact patch of a tire is small, maybe the size of a playing card. That patch only increases by a small percentage of the overall width and diameter.

    #3 - Wider tires are heavier. That's right, tires are unsprung reciprocating weight. The more they weigh, the more force to takes to accelerate and decelerate them.

    #4 - When a tire is too wide for a wheel, the sidewall isn't properly supported. This means flex, uncontrolled, unpredictable flex.
    This photo is a great example
    [​IMG]
    Look at how far beyond the tread extends past the bead. That section of tread is basically unsupported.

    100% in corners a car on a 15x7 with a 275/60/15 is going to be less stable, less predictable and slower than a car on a equal 235/60/15. In a straight line, it's a little less pronounced, but the properly sized tire will be faster
     
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  7. Twisted_Metal

    Twisted_Metal Administrator Staff Member Lifetime Gold Member

    26,047
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    Feb 26, 2004
    Bloomington, MN
    ^ +1 Sidewall roll while cornering gets pretty bad if the bead of the tires needs to be pushed inward to get them to fit.

    I used 255/60/15 on my 7" wheels. I wouldn't go any wider on a 7" wheel.
    They seem to work fine but the previous 235/60/15 tires actually felt a bit more stable in the corners.

    BTW... Tire pressure is critical for running 255s on a 7" wheel.
    28 lbs is about the limit. I ran mine @ 32 lbs for several thousand miles and the center of the tread wore much more than the outer edges.
     
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  8. JD Z

    JD Z Veteran Member

    Thanks guys. Great points lowend and twisted.

    I’m leaning to:

    215/70 on front
    255/60 on rear.

    Would like wider on rear but I want to keep the stock wheels. Thanks for your time to write and help.
     
  9. Lowend

    Lowend Administrator. .a car, a man, a maraca. Staff Member Lifetime Gold Member

    14,564
    307
    Mar 25, 1999
    San Jose, CA, USA
    Please don't think I was trying to be condescending to you JD Z
    I was addressing my post to anyone who might be viewing the thread
     
  10. Zspoiler

    Zspoiler Veteran Member

    2,746
    164
    May 6, 2012
    Federal Way, Washington
    Its your car you do what you want.
     

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