okay i just traded my titan in for a 2500 ram. i'm doing a 6" lift and 37's. what is a safe load rating to run on my truck? i don't tow anything to heavy, mostly just snowmobiles. i plan on running a sled deck which puts 2 sleds on a deck mounted in the bed of my truck. i might tow a 2 place sled trailer behind that. at the most i would pull a 4 place sled trailer or the possiblity of towing a race car trailer with 4-5 sleds ( doubtful). whats a safe rating in terms of weight? so d rated can handle 3k lbs plus. is that enough or do i need to be up over 3500 on an e rated? i just want to be safe.