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  1. #1

    Default Tire/Rim Help for New Lift

    Alight guys need some help. I am currently running DC mud country 33s with stock 17" rims on my '05 1500 Z71 w/ front end leveled (via torsion bars/no trimming required & minor occasional rubbing during full sharp turns). I have decided to upgrade w/ a 4" Rancho lift along w/ some new trail grapplers and 18" rockstar wheels (18x9 w/ 0 offset).

    Question #1-What is the biggest tire I could run w/ this setup ? (I know 35s easily but wasn't for sure on 37s or not).

    Question #2- W/ the rim size & offset, would this setup cause my tires to stick outside the fender flares? Not going for the wide, knobby look and wanting to stay near flush to the flares.

    Thanks for all the post/advice! Take care & God bless.

  2. #2
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    mfleetwood's Avatar
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    Sorry for the delay, I just caught this post.

    With stock offset (not sure what that is though), my 35's barely fit. I don't think, nor have I heard of anyone fitting 37s with solely a Rancho 4" lift.

    For your second question, you would also have to take into consideration your tire width before you know exactly how far they will stick out.


    Mike (Denver, CO) - 2008 Sierra 1500 Z71 SLE 5.3L 4WD

    SUSPENSION: Rancho 4" Suspension Lift; Rancho RS9000XL Shocks; Rancho Skid Plates; Rancho MyRide Wireless Shock Controller;
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  3. #3
    Master Mechanic Burden33's Avatar
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    35's will be a tight fit im running 35's on my 8"lift and im clearing them now. 37's you will need atleast a 6"lift with a 3" body. if your looking for the stock look you will want to go with 33 for no trimming and a 35 will be tight also you will want a +10 offset which will put the rim inside more i had a 0 offset and it stuck the rim out about 1" on 32x11


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  4. #4

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    So to hop on the bandwaggon with the rims and tires question concerning the Rancho 4" lift, I am looking at the ATX Artillery in an 18x9. They have 4.53 inch backspacing with a -12 offset. I was thinking of running a Nitto Trail Grappler 35x12.50 but I am thinking that will be too much. Just to size down a tad and go a little narrower I am now considering that tire in a 295/70/R18. That comes out to a 34.57x11.73. My question is will this set up fit? And will I need to do a lot of trimming to clear? Or am I better off sticking to my stock 18" rims? Anything you guys can add would be awesome. Thanks.
    There is no problem that can't be solved with the liberal application of C-4!

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  5. #5
    Master Mechanic Burden33's Avatar
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    you will rub with that setip since the rim is pushed out but trimming might only be minor im not a 100% sure on that since im running a 8" lift with 35's but you should be able to clear 33x12.50 with that rim setup. here is a link to another forum im on they might have the answere in this thread for you. http://www.gmfullsize.com/forum/showthread.php?t=190750

  6. #6

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    Quote Originally Posted by Burden33 View Post
    you will rub with that setip since the rim is pushed out but trimming might only be minor im not a 100% sure on that since im running a 8" lift with 35's but you should be able to clear 33x12.50 with that rim setup. here is a link to another forum im on they might have the answere in this thread for you. http://www.gmfullsize.com/forum/showthread.php?t=190750
    Thanks a lot Burden.

  7. #7
    Master Mechanic Burden33's Avatar
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    No problem

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