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Thread: Will metric tires fit my 30x9.5x15 rims?

  1. #1
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    Default Will metric tires fit my 30x9.5x15 rims?

    I am looking to replace my tires on my stock 2000 Jeep Sport.

    It came with Wrangler GS-A 30x9.5x15.

    Will any of the metric size GS-A's I see listed on ebay be a direct fit?

    Or what sizes will fiton the stock rim?

    Thanks

    Craig

  2. #2

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    You've got 15" rims, so look for tires with an "R15" on the end of the tire size. Generally, tires for 15" rims come in "floatation" sizes, ie: 30x9.5", 31x10.5", etc.

    When you go to a 16" rim, that's usually when you start seeing metric sizes.
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  3. #3
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    Default

    30x9.50 is roughly the equivalent to a 235-75R15

    As far as what tire sizes will fit on your stock rims, there are many. If you have no lift, you can go up to 31x10.50s, which are real nice on a stock TJ.

  4. #4
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    Default

    -=- originally posted by 04scjt -=-
    30x9.50 is roughly the equivalent to a 235-75R15
    uh...no

  5. #5

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    -=- originally posted by ????? -=-
    uh...no
    what a thought provoking reply..


    a 235/75/r15 is Calculated Tire Size: 28.9" x 9.3"

    Tire Calculator

    from goodyears website

    30X9.50R15LT B OWL 6.5- 8.5rimwidth 7.5rimwidth5 9.4width 29.7height 1,565 @ 35

    goodyears website

    so we are talking about .8" in height and .1" in width.. since he said roughly equivalent id say he's pretty close..
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  6. #6
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    Default

    -=- originally posted by ????? -=-
    uh...no
    My bad then...I've just eye-balled the two and they look the same. In fact, one of my buddies is running three 30x9.50s and one 235-75 on his YJ and it *seems* to sit about level.

    I'll concede if I'm wrong though :bangnerd:

  7. #7
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    Default


    These tires are 265/75/r15's they fall between a 31 and a 30 10.50. HTH

  8. #8

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    A 255/75-15 would be as close as possible to a 30x9.5 (little wider):


    255/75-15 = 30.06" x 10.04"


    First number x .03937 = width in inches:

    255 x .03937 = 10.039"


    Width in inches x aspect ratio (in this case .75) = sidewall height:

    10.039" x .75" = 7.529"

    Add the lower sidewall height (below the wheel 7.529") to the upper sidewall height (above the rim 7.529"), to the rim height (15" in this case), and you get total tire height = 30.058"

  9. #9

    Default

    Oh yeah, to answer the question...

    Factory 30" tires came on 15x8" wheels.
    Any tire that will fit that rim will be OK.

    Personally, I wouldn't go smaller than a 235/75-15 on an 8" rim, but with a little swearing, you could probably seat a 225/75-15 on it.

    Wide wheels, with narrow tires make it hard to reach the sidewall of the tire over to the bead, to get the air to seal, and pop the bead on.

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