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Anonymous
Anonymous Posted on Sep 18, 2009
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Is it ok to go from 235 70 r15 tires to 235 75 r15 on a 1999 gmc jimmy

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Yes its ok, the 75 tires are a little taller. your speedometer will not read correct speed, you will actually be going faster than what it reads.

Testimonial: "Thanks for the info on the speed,i wasn't aware of that."

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  • Posted on Sep 18, 2009
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It depends on the width of your rims. It will fit just fine.
The tire tread circumference will increase about 1 or 2 tenths of an inch and the speedometer difference will be negligible at any speed.
The "75" tire RATIO makes it taller compared to its own width when compared to a "70" tire, which is shorter compared to its width. The "70" tire just happens to also be physically taller by an immeasureable amount. The vehicle height will not change (measure the vehicle height on a level surface and measure again after you change tires - no difference).

  • Anonymous Sep 18, 2009

    typo correction: The "75" tire just happens to also be physically taller by an immeasureable amount...

    ... Gort007

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1995 gmc jimmy problems
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