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  1. #1
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    Benefits or Issues of having 38x13.50 tires

    First, its great to be back. Question?

    1.What are the benefits of having 38x13.50 tires?
    a. Because it just right on a H2?

    2. What are the issues of having 38x13.50 tires?
    a. Loss of power?
    b. Loss of drivability?
    c. Loss of torque?
    d. Makes the Engine/Drive Train work harder?
    e. Did you wish that you should have just left it at 37x12.50?

    3. What brand of rims/wheels would you recommend? Not those crazy style design, a design more in line with, heavy duty, simple, industrial, rugged.
    a. Both pavement and light offroad, Level 1 - 3
    b. Width of Wheel?
    c. Backspacing recommendation?

    I am just going with the leveling kit, 2.5, and 1 inch in the rear, not going any higher than that.

    Thanks,
    Dan

  2. #2
    Chapter President

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    Dan, I responded in the other thread, but in short I have no complaints about running 38s and a leveling kit and will not be going back to 37s. No loss of power, drivability, etc. and hardly noticeable if your already running 37s. I am re-geared to 4.56 and have been running that for 8 or 9 years, but would have gone 4.88s, as its might be a slight bit sluggish, I have not been too eager to upgrade because its not noticeable with the 38s. I am running 18x9 wheels with a -12mm offset and the fit with 38x13.5 tires is perfect.

    Pics showing the offset.
    B I G 2 D A B A N K

    2005 H2 SUT, Desert Sand

  3. The Following User Says Thank You to Big2dabank For This Useful Post:

    BlueSteeleHorse07 (09-17-2018)

  4. #3
    All Terrain
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    Go for the 38s! They are awesome! I would go with some beadlocks if they fit your budget! Don't have an H2, but an H3 Alpha. There is loss of power during acceleration but it is a good trade off to allow your rig to sit higher.


    2008 Hummer H3 Alpha Adventure + Luxury

    Rancho 4in, 295 Nitto Terras, Road Armor Bumper, Smittybilt 10k, Gobi Stealth, RRO Sliders, Daystar 1" Body Lift, ARB snorkel, Runcool Louver, JKS front disconnects, Coverking Cordura Ballistic Seat Covers, Schwarttzy Skid Plates + Leaf Mounts + Extended Shackles, Outfitter Design Tire Rods, Optima D34, Smittybilt Storage Drawer, Cobra 29 ltd, Dual 102" Whips

    Parts List Updated 8/10/18

    [Follow The Build]

    [Wheeling and General Pictures]



  5. The Following User Says Thank You to Acer4LO For This Useful Post:

    BlueSteeleHorse07 (09-17-2018)

  6. #4
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    Here' my Plan, within the next 15 months.

    PHASE 1. Custom Dual Exhaust - Custom True Duel Flo-Pro "Big Oval Black Tips" Performance Muffler, by Kinneysmufflershop.com


    PHASE 2.
    a. Leveling Kit, by customtrucktexas.com,
    b. Open Country Mud Terrain - 360382, 5ea, customtrucktexas.com,
    c. Rims/Wheels XD XD128 Black 18x9 or Gear Alloy 740B Manifold Black, customtrucktexas.com,

    PHASE 3. EGR Fender Flares Offroad style black fender flares, customtrucktexas.com

    PHASE 4.
    a. Shocks 4600 Heavy Duty Front. 24-109369, back. 24-016988,
    b. Steering Stablizer. 33-174525

    PHASE 5. (When I win the Lottery and if still available)
    a. Road Armor Dakar Series Full Width HD Rear Bumper with Spare Tire Carrier,
    b. Road Armor Dakar Series Full Width with Brush Guard

    PHASE 6. Custom Tune, here in Austin, Texas (custom tuners for Chevy, GM, and Ford).

    Funds allowing beginning Oct 2018 - ending Dec 2019 (fingers crossed).

    Dan

  7. #5
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    One last question, will there be an issue if I purchase 18x10 in lieu of 18x9? other than a larger footprint, especially from behind. I am going to re-gear, just haven't found a shop, it sounds like to just go ahead and re-gear t to 4.88

    Danny
    Last edited by BlueSteeleHorse07; 09-22-2018 at 06:56 PM. Reason: add paragraph

  8. #6
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    One last question, will there be an issue if I purchase 18x10 in lieu of 18x9? other than a larger footprint, especially from behind. I am going to re-gear, just haven't found a shop, it sounds like to just go ahead and re-gear t to 4.88


    Danny

  9. #7
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    Im only running 37s . But I regeared to 4.88s. Love that gearing. Especially off-road and in 4low. Going with them, you wont regret it
    2005 H2 Adventure

  10. #8
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    Hey Zach, how is the difference from 4.56 to 4.88. Are you still running a premium tune. Now that Im on 37s Im trying decide what would be best for my use. My expedition trailer is about 2,000lbs so I was thinking 4.88 with a 87 octane tune. Hoping that I will b able to tow in overdrive. When I was 35s I could most of the time so it would be nice to keep that feature, hoping to stay double digits in mpgs if I can


    Sent from my iPad using Tapatalk

  11. #9
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    Quote Originally Posted by glpd74 View Post
    Hey Zach, how is the difference from 4.56 to 4.88. Are you still running a premium tune. Now that Im on 37s Im trying decide what would be best for my use. My expedition trailer is about 2,000lbs so I was thinking 4.88 with a 87 octane tune. Hoping that I will b able to tow in overdrive. When I was 35s I could most of the time so it would be nice to keep that feature, hoping to stay double digits in mpgs if I can


    Sent from my iPad using Tapatalk
    I went from the stock 4.10 gears to the 4.88s. Had the 37s before the gear change. Running on the highway and any type of hill, the trans would downshift and up shift searching for a gear. Since the gear change it doesnt do that. I run the 91 octane tune. And if youre looking for double digit mpgs? Sell the rig now and buy something else🤣
    2005 H2 Adventure

  12. #10
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    My apologies, for some reason I thought you were at 4.56 before 4.88. Thanks for the info. Yeah when I say double digits, my target goal is 10mpg


    Sent from my iPad using Tapatalk


 

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