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  1. #1

    Default tire size increase

    i have a 2007 silverado 1500 z71 new body syle extended cab with a 2" leveling kit. im looking to increase tire size and im looking to see if this size jump would work

    im currently running some 265 70 r17 i like my stock wheels but i am interested in purchasing some Nitto Trail Grapplers size LT285/70R17 E121/118Q these tires are about an inch and 3/4 taller than my old ones and im wondering will i get any rubbing?should i stick to the same size and just go that route. i would like some taller/wider tires but i dont want to get my MPG destroyed as well any help would be greatly appreciated thanks!





  2. #2
    Jr. Apprentice
    Join Date
    Feb 2013
    Location
    Amarillo Texas
    Posts
    27

    Default

    A lot of leveling kits and suspension lift kits will mention in the installation instructions what tires to run with the lift. With the Rough Country 2" level kit they advise a 285/70 for your year model truck.

  3. #3

    Default

    i have the rough country thanks i think thats what im going to go with

  4. #4

    Default

    A 285-70-17 will have an overall height of 32.71 inches, the 265-70-17 is 31.61 inches.

    That's a difference of 1.1 inches. They should not rub, but you will want to get the ECU updated to reflect the new tire size. Believe it or not, that will throw your automatic transmission shifting off.

    2013 Silverado LTZ White Diamond Crew Cab


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  5. #5

    Default

    The trail grapplers are actually 33 and some odd inches they have a little deeper tread which I think makes them taller. I've read some guides and it seems like as long as I have leveling kit I won't rub. Thanks for the input. As far as ecu goes I wouldn't even know where to start with that

  6. #6

    Default

    Quote Originally Posted by chihawks35 View Post
    The trail grapplers are actually 33 and some odd inches they have a little deeper tread which I think makes them taller. I've read some guides and it seems like as long as I have leveling kit I won't rub. Thanks for the input. As far as ecu goes I wouldn't even know where to start with that
    You can get a tuner like Hypertech or Diablo. One of the options is to tell the ECU how tall the tire is in inches.

  7. #7

    Default

    I'll have to look into that thanks

  8. #8

    Default

    Should not be a problem... I'm running that size without a leveling kit on my 2500.
    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.

  9. #9

    Default

    I have a level kit on my truck with 33's although mine are 12.50's and they rub a little. All I did was trim the inner fender skirt to remove what it was rubbing on. I think if you went with something like a 11.5 or so it may not rub.





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  10. #10

    Default

    Quote Originally Posted by aloxdaddy99 View Post
    I have a level kit on my truck with 33's although mine are 12.50's and they rub a little. All I did was trim the inner fender skirt to remove what it was rubbing on. I think if you went with something like a 11.5 or so it may not rub.
    yeah the ones i want are 11.57 thanks for the input

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