7" 3rd gen tire size option

Discussion in 'Suspension, Steering, Brake & Wheel Topics' started by Milligsc, Jul 18, 2015.

  1. Milligsc

    Milligsc Member

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    Hi Guys, I have a set of stock 85 5 spoke camaro wheels I'm putting on my 79Z. I looked in the tire sticky but still not sure here. What is the largest tire I can put in back? What would you guys recommend. I;m thinking 255 60 15 in back and 215 65 15 in front. Any info appreciated. I do have 1" lowering coils in front, the rest is stock.
     
  2. whitess

    whitess Member

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    Don't know about the rears but with those wheels the stock size was 215/65R15. T/A (15"), Monte Carlo SS, GN and 442's were the same too.
     
  3. 3SLO5

    3SLO5 Veteran Member Lifetime Gold Member

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    255 60 in rear. 225 60 in front slammed 235 if not that low 245 will work at stock height.
     
  4. tom3

    tom3 Veteran Member

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    Be sure and check the inside bead sealing surface on those old wheels. Get crusty corrosion build up, make for leaking tires.
     
  5. The Champ

    The Champ Veteran Member

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    With a 1" drop in front, I'd go with 235/60/15's up front. Same height as the 215/65/15's (which were NOT the stock tire for a '79Z - 225/70/15's were).

    With lowering the front, you won't be able to put the stock tire size (26.85") up front. The 235/60/15 is 26.1".

    In the back on a 7" rim the 255/60/15 is the best bet - 27.1" tall - so it fills the rear wheel well nicely.
     
  6. whitess

    whitess Member

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    In 82 - 92 they WERE 215/65R15's. :)
     
  7. The Champ

    The Champ Veteran Member

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    The car in question is a 79Z...:bowtie:
     
  8. typeLT73

    typeLT73 Member

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    https://www.tacomaworld.com/tirecalc?tires=235-60r15-245-40r18

    This is one kool tire size comparison that I use often. It is very useful when comparing original size vs. what ever you are thinking of using.


    I am currently running 245 45 R18 and need some new tires and was thinking of running 245 40 R18. not sure if would be too low.
     
  9. Z-WIZZ

    Z-WIZZ Veteran Member

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    think BS was different on those later wheels
     
  10. 3SLO5

    3SLO5 Veteran Member Lifetime Gold Member

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    15x7 82-92 f body wheels are the same 4.25 backspace as 2nd gen 15x7 wheels.
     

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