Finally decided on a new set of tires. I will be getting the BFG AT in the 265/75/16 size. I can't decide on whether I should get them in load range D or E. I only tow a 6000lbs. travel trailer in the summer months and am unladen the rest of the year. Two concerns here, the D's are 16/32 tread depth, the E's are 15/32. As well, winters get pretty bad here and the E's do not have the RAC rating for severe winter weather, but the D's do. My question is what should be my primary concern: the load range E for the minimal towing I do, or the D which gets me the slightly deeper tread and RAC rating, but at what costs for such a heavy truck like a diesel? Will I feel a difference in ride between the two?