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  1. R

    Tire Size

    Hello all I am looking at buying a new FIFTH WHEEL, and people are telling me that i need to get the 285/75/16 tires off. And go back to 265/75/16. I can't beleive that would make that much of a differents. I have not done put any lift kits on it. Also will i need to add a extra leaf spring to...
  2. R

    Want to chip my 2003 duramax

    I am new to the site. I would like to chip my 2003 duramax. Not sure what to go with. The Bull Dog ?? Or the Edge. Ihave the 285/75/16 for tire size. And the truck has about 91,00 miles on it.I don't do a lot with the truck. I have a 32" 5 wheel and want better fuel mileage out of it. Please...