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  1. #1

    Default Which tire size with ccm 2.5 and 1.5 BL?? - NNBS

    Ok, well, I am still having the hardest time deciding what to run with this setup. NNBS 2.5 ccm leveling kit, zone 1.5" BL. With 18x9 Fuel Hostage with 4.5" or 5" Backspacing. They will be trail grapplers for sure, but between these 3 sizes what would you run, they have such odd sizes.

    (275/70R18) - 33.6x11x18 - 66 lbs, like the height, but may be too narrow for me

    (285/65R18) - 32.8x12x18 - 69 lbs, a bit shorter, but wider

    (295/70R18) - 34.5x11.7x18 - 72 lbs, taller and wide, but may require to much metal trimming, and may require me to regear, worse mileage(if you are runnign these tires could you fill me in on the fine details of what was required)

    arrrrrgghhhh, why dont they just make a 33x12.5x18- would make this a lot easier

  2. #2


    I am running 295/70R17 (33.4X11.6) with just a level kit and had to just trim plastic. With the BL I would think go for the 295/70R18's. They are only 1/2 inch taller and you are going up 1 1/2 inches. You will have to trim but the others would have too much wheel well gap IMO.

    Do you have 3.42's or 3.73's?

    ________2013 4C Rated__________

  3. #3


    I have the 3.42's with the 6 speed. How has your gas mileage been compared to stock?

  4. #4


    Once I got my speedo calibrated I am sitting at 15.8 mpg and that is mostly back road driving. No faster than 60 mph. I have stock 3.42's also. Let me know what you go with cause I have looked into the zone 1.5 BL and will soon be getting 18's.

  5. #5


    Welcome to the club.

    2005 Chevy Silverado Z71 Crew Cab
    6" Skyjacker lift w/Edlebrock dual front remote resoviour shocks, single rear remote. Rancho skid-plate.
    17" x 9" M/T Classic Lock Wheels, 35" BFG A/T or M/T tires
    4.10 PercisionGears w/factory locker, T/A Performance rear-end cover
    Banks CAI intake, ported throttlebody, JBA coated headers, over-sized Magnaflow cats, Magnaflow cat back exhaust, Diablo tuned
    B&M aluminum deep transmission pan
    Warn brush guard w/Warn 9.5 XP winch, PIAA bulbs, Line-X bedliner, AWS Black tool chest, Extang tonneau cover
    Weather Tech floor mats
    Cover-Craft seat covers
    Dash mat cover
    Formula One window tint
    One black Lab in rear seat.

  6. #6


    My opinion you can run 325/60/18 which ='s a 33 13.50 just minor trimming of the plastic wheel well liner no cutting i ran this tire when i have just a 2.25 leveling kit from readylift.

    2008 Chevy Silverado Ext. Cab Lt Z71 5.3 V8
    7.5 Inch Rough Country Suspension Lift
    RBP Replica Grille Black w Chrome Rivets
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  7. #7


    If you go with a larger tire, then stay away from the wheels with 4.5" bs. I would go with the 5" bs and the 285's. Also keep in mind that Trail Grapps run big.

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