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Thread: 33s on a 2500 Suburban?

  1. #1
    Join Date
    Jun 2007
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    inland empire
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    174

    Default 33s on a 2500 Suburban?

    Unexpectedly, I just purchased a 2000 Suburban, 2500 4x4. Right before I bought the 2000, I had new 285/75/r16s (33") put on my '83. I'd like to put the new tires on the 2000 suburban. I can get leveling kit for the front end and I have been told this will allow the 33s to fit.

    Anyone done this? Good, bad, or other? Would you post a pic?

    Thanks
    '83 K20 Suburban
    N/A 6.2, 700r4 non-lockup, Racor secondary filter
    Overload airbags

  2. #2
    Join Date
    Mar 2000
    Location
    South Central Pennsylvania, USA
    Posts
    2,697

    Default

    I've got 285/75R16's on my '93 K2500 without any problems. Two disclaimers, though. First is that I have a snowplow frame on it and the front bumper is pushed forward because of that. I have a feeling that might make a minor difference to things. Second thing is that I bought the truck used, so although it did not have oversize tires on it when I bought it, I have no idea if the PO did anything with the torsion bars. There is no lift or leveling kit on it, though.
    '94 GMC 6.5TD K1500 4L80E 2-Door Yukon SLE 221K
    '93 Chevrolet 6.5TD K2500HD NV4500 Std. Cab Longbed 187K
    '85 Toyota 22R RN60 4x4 Std. Cab Shortbed 178K (Currently retired for rebuild)
    Diesel Page Member #2423

  3. #3
    AKMark is offline Building another 6.2L powered vehicle
    Join Date
    Dec 2006
    Location
    North Pole, Alaska
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    Default

    My 99 (Old body style) K2500 Suburban fits the 285/75R16's on stock rims without a problem.

    With 4.10 gears it helped the truck.
    05 2500HD CC LB LLY, 4x4, 3.73s 235/85R16's, webasto cab heater, to keep it warm.
    03 Buick Rendezvous - When you average over 80 miles per day driving around, you need one of these.
    85 K-5, 6.2, SM465, Rockwell T221, 1 tons, 36's. More goodies to be installed as time and money allows.
    82 K20, 6.2, SM465, NP208, stock except for bed rack, snow plow, and glow plugs are on a toggle switch. It works great for plowing!
    72 Postal Jeep - Yet another project

  4. #4
    Join Date
    Jun 2007
    Location
    inland empire
    Posts
    174

    Default

    Thanks for the info. Just got the leveling kit installed and it helped enough to put the 33s on. I am a little worried about the loss in gearing from the 30s to the 33s though. I bought the 2000 to pull a trailer and want to keep it pulling like it should. And what about the electronic transmissions-what effect do bigger tires have on those?
    '83 K20 Suburban
    N/A 6.2, 700r4 non-lockup, Racor secondary filter
    Overload airbags

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