Are you sure about that. To this point I have been told that a) offset is the biggest factor when talking about bearings b) weight asside a larger tires causes less revolutions of the bearing so its easier on it that way.
As for the weight I can see what you mean. I guess for the time being I'll just hold onto my 33x12.5's and see what happens in the next season (its winter here now).
Something else I am a little confused on. The stock rim is has 3.5" of backspacing. I just measure the rims that my 33 thornbirds are on and the backspacing is 4" (measured from the lug nut whole to the inside edge of the rim). So the person that owned the truck before me put these rims on for show because a 3.5" backspaced rim would give me more rubbing clearance to the frame that a 4" backspaced rim.
Am I getting this or am I just talking