I will need a set of tires on my F350 CC that I keep my heavy camper on all year. We are planning on driving the dempster this fall so want something that will hold up to the gravel caring a big load. Right now I just have the stock wranglers load range E on it which have been OK, was wondering if I should go up to load range F. I have heard that road can eat up tires, what are people using for that kind of driving