Hi I am wanting to go with a taller tire on my 1997 3500. Something a few inches taller that the 235/85R16's. it has a 2" leveling spring in the front. I tow with the truck often and need something that won't rub together in the rear. I was thinking about a 255/85R16. Will this size work or is there something better? Am I going to have to run spacers? I want some kind of mud tire. I have ran BFG Mud terrain and the Buckshot mudders and both were decent. What brand do you guys prefer. I even though about a super swamper for a little more aggressive look, but I need something that will be decent for towing and will wear and ride decent. Thanks in advance for your help.