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  1. #1

    Default increased ground clearance

    If im upgrading from a 31" tire on a 17" wheel to a 33.5" tire on an 18" wheel about how much more ground clearance do you think i will get. i mean basic math would say about 2 inches but how true is that?

  2. #2

    Default

    Since you only provided overall diameter of the wheel and the tire (i.e. didn't provide tire width and profile information), I can't calculate what you're asking about, as there's not enough information. So, instead, I'll link you to the calculator I'd use and you can calc it, yourself, and answer your own question.

    http://www.miata.net/garage/tirecalc.html

    Best I can do given the info provided.

  3. #3

    Default

    Quote Originally Posted by SurrealOne View Post
    Since you only provided overall diameter of the wheel and the tire (i.e. didn't provide tire width and profile information), I can't calculate what you're asking about, as there's not enough information. So, instead, I'll link you to the calculator I'd use and you can calc it, yourself, and answer your own question.

    http://www.miata.net/garage/tirecalc.html

    Best I can do given the info provided.
    this doesnt seem to give me any ground clearance information it just shows my spedo difference im going from 265/70/17 to 275/70/18

  4. #4

    Default

    Quote Originally Posted by chihawks35 View Post
    this doesnt seem to give me any ground clearance information it just shows my spedo difference im going from 265/70/17 to 275/70/18
    Try paying attention to the 'diameter' information for the old and new tire sizes. The delta between the two is the clearance you'll get. ..after considering/accounting for both wheel and tire information, which is what you were looking to do.

  5. #5

    Default

    Quote Originally Posted by SurrealOne View Post
    Try paying attention to the 'diameter' information for the old and new tire sizes. The delta between the two is the clearance you'll get.
    i see what you're saying thanks

  6. #6

    Default

    goin from a 31 to a 33.5 should give you about an 1.25 inch gain in clearance. the center of both tires will mount to the hub in the same spot. so of the 2.5 inches of difference in size, half will be on top, and half will be on the bottom( which is what is going to add clearance)

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