Can I use "lower" tires on my 2500HD D/A?

Discussion in 'GM Duramax 6.6 (LB7)' started by Tom Seeley, Jul 16, 2005.

  1. Tom Seeley

    Tom Seeley Member

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    I'm still getting used to my first new used truck. Lots of newbie questions yet. :confused:

    I bought it in Minneapolis from a dealer who couldn't/wouldn't tell me much about how it had been used, but I knew going in, from the independent inspection I paid a diesel specialist to do that, that it had been used off-road a good bit. Nothing wrong with that; just something I observed in deciding to buy it.

    It has Goodrich All Terrain LT265/75R16 tires.

    I used to remember how to read that lingo, but I'm not sure any longer.

    What I'm really about to ask is this:

    Can I use 16" tires that are narrower than the 265, still fit on my 16" wheels, and have a lower overall diameter, so the entire truck sits an inch or so closer to the ground?

    Or would I have to buy four new wheels, as well as new, narrower tires to fit on them?

    Finally, since I use an equalizer hitch, which is set for a particular set of dimensions and angles between truck and trailer now, if I do lower the truck, would I have adjust the hitch also?


    --------------------------------------------------------------------------------
    Our first new used truck and trailer!
    2002 GMC Sierra 2500HD Duramax/Allison
    2002 Nash 25S
    Equal-i-zer and Prodigy
     
  2. Terrain Twister

    Terrain Twister Active Member

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    Location:
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    Factory size is 245/75-16. Technically, that is the largest size (per tire manufactures) that will fit the factory rims, which sounds like what your looking for.
    I don't think you'd have to adjust the hitch for that minimal of a change.
     

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