I have a 2005 Silverado 3500 Duramax. I am looking for a used camper. I need new tires for the truck and want to buy them before I get the camper. The tires I have on now are 215/85R16 load range E...
GMC was 2003 2500Xcab 4x4 Xcab SB - we up-sized from stock 245's to BFG 265's AT shortly after buying it.
Recently upgraded to 2015 GM 2500HD 4x4 ExtCab SB stock with 265's and went up with BFG 285 AT and the ride improved a HUGE amount. Not sure it was totally the up-size as the stock 265 tires sucked. But the BFG's 285 AT are a sweet ride on the highway, and do a great job off-highway as well. Not cheap ... but worth it.