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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)

  7. #7

    Default

    The real benefit of the larger tires are that it will fill the wheel wheels better and just give more balance to the look of your vehicle. 33.5's are what I am running on mine...))
    2009 Chevy Silverado 2500HDLT 6.0L w/ Towing Package, Dick Cepek GM8 Rims, Dick Cepek FC II 33X11.50R17,RKSport Ram-Air Hood(Functional), Lazer Lite Aluminum Tonneau Cover, Road Armor Stealth Bumper, PIAA Lighting, Diablo Trinity Tuner, Diablew Custom Tune, BullyDog Cold Air Intake, American Racing Headers w/highflow cats, Corsa Performance Sport Exhaust, Custom Striping, Black Bowties front and rear, Fuel Grille Inserts, Recon Headlights, Readylift Shocks, Readylift Upper Contol Arms, 2" Blocks in the Rear..

    Future Plans: HD Tie Rods, Under hood upgrades, Crower Camshaft and possibly electric fans.

  8. #8

    Default

    Quote Originally Posted by TimTom64b View Post
    The real benefit of the larger tires are that it will fill the wheel wheels better and just give more balance to the look of your vehicle. 33.5's are what I am running on mine...))
    yea your truck is nice i think it will look good. thanks for the help

    ps, i like that custom encore you have looks good, i have an omega

    - - - Updated - - -

    Quote Originally Posted by barefoot greg View Post
    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)
    yeah i think the ones im looking at (nittos) are like 33.64 inches so that should look nice

  9. #9

    Default

    Quote Originally Posted by barefoot greg View Post
    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)
    Yep it's actually the radius of the tires you need to use. The 31 has a radius of 15.5", the 33.5 has a radius of 16.75". The difference, as calculated by @barefoot greg, is 1.25"
    This would be the effective increase in clearance.
    Ray

    '09 Avalanche LTZ - Black
    '05 Envoy XL (sold)

  10. #10

    Default

    Quote Originally Posted by RayVoy View Post
    Yep it's actually the radius of the tires you need to use. The 31 has a radius of 15.5", the 33.5 has a radius of 16.75". The difference, as calculated by @barefoot greg, is 1.25"
    This would be the effective increase in clearance.
    yea it should pick me up a little bit thanks

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