Optimal performance tire size for 15x7 z28 wheels

Discussion in 'Suspension, Steering, Brake & Wheel Topics' started by vintagecarenthusiast, Sep 20, 2018.

  1. vintagecarenthusiast

    vintagecarenthusiast New Member

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    80sz, I guess if I can squeeze a 275 50 15 on the back then I could squeeze a 275 60 15 on it? If so I guess I could just use what I have until after I get the car back out after winter. I currently have 275 60 15’s on the back. What is the optimal tire pressure? I don’t care about treadlife since they are basically free to me anyway.
     
  2. Zspoiler

    Zspoiler Veteran Member

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    I didn`t go any bigger than P245/60-15`s ,Because with the wheel offset and the tire pressure (35 PSI) ,Because it would rub on the outer lip,
     
  3. 80sz

    80sz Veteran Member

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    26" tall and radial. It's tight for a 7" rim as they say7.5 minimum. Mine never fell off
     
  4. djorgensen3

    djorgensen3 Veteran Member

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    I bet it wouldn't cost much to get the wheel welded where the leak is. I'd bet its a small pinhole or something. Now if it's cracked, different story and probably replacement is best but there are wheel repair places that could easily fix the wheel and not be too costly.
     
  5. Twisted_Metal

    Twisted_Metal Administrator Staff Member Lifetime Gold Member

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    I have 255/60-15 on the rear of mine but the 245/60-15 is better on a 7" wheel.
    (Less distortion of the contact patch.)
    You can't run the 255s over 30 PSI without suffering severe center tread wear.
     
  6. vintagecarenthusiast

    vintagecarenthusiast New Member

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    I'm leaning towards 235 60 15 in the front and and 245 60 15 in the back based off of everyone's recommendations. Summit and Jegs sale ends today so I guess today is the day that I pull the trigger. So 245 60 15 in the rear should perform as well as 235 60 15? handling-wise, highway use, sidewall stability in turns? I'm not racing or anything, just using for driving it on the street. Thanks everyone for the input!!!
     
  7. bkmont

    bkmont Veteran Member

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    I like the the new Firestone Radial Wide Ovals. They handle very well for a street tire on my 70Z with a Rancho Challenger Suspension kit on it.
    IMG_3455.JPG
     
  8. johnnycamaroz

    johnnycamaroz Member

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    nice what size are those , they look good FR6015?
     
  9. vintagecarenthusiast

    vintagecarenthusiast New Member

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    I love those wide oval's. That's an expensive tire but a great look. ~$320/tire?
     

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