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Do I have to use metric tires on my truck?

I have a 1999 GMC Sonoma 4WD truck that has 31X1050R15 tires on it. Do I have to replace them with the exact same size? The selection is limited for this exact size and they tend to be more expensive than standard tires.

4 Answers

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  • Blair
    Lv 6
    10 years ago
    Favorite Answer

    That is not the factory sized tire for your truck . Look in the door jamb there should be a decal with the factory size tire . I am guessing 235 75 r 15 s . A good tire shop can also tell you what size should be on it .

  • Rabbit
    Lv 5
    10 years ago

    a 265x75x15 tire is almost exactly same size. 1010tires.com has a good calculator to double check. 31x10.50x15 tires cost more cause most are A/T or M/T tires, those have a more aggresive tread and designed for off road driving usually, search for a 265x75x15 tire and youll find more selection and street friendlier tires, plus a 265x75x15 tire will fit on the same rim as the 31x10.50x15.

    Source(s): Off roader
  • 10 years ago

    I don't see why you couldn't use a P235/70R15 on it. Someomne may have gotten a deal on those tires you have.......31' is really tall for a factory installed tire.

  • 10 years ago

    Limited to a few hundred choices maybe. 31x10.50R15LT is a very common size.

    Source(s): I work in the tire industry
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