Originally Posted by kcchief434
ok i have an 06 f350 6.0 powerstroke lifted 6 inches with 38 dick cepek tires that ride horrible plus their d rated tires. i am getting 37 inch toyo open country mts for my next set of tires my only dilemma is i have 18 inch rims and the 37/13.5/r18 are load rated d tires. the 17 inch and 20 inch tires are load rated e tires but i don't really have the money to buy a rim tire combo. will i be ok pulling a 30 foot travel trailer with the Toyo d rated tires. i already know i will get bad responses with towing with a lifted truck but ive already taking the proper steps with traction blocks in rear and also the correct drop hitch with weight distribution setup just not sure about the d rated tires. im purchasing a camper in march from a trailer show in the area. just want my setup to be as safe as possible.
It's simply a matter of tire load capacity versus actual load. Yes, a Load Range "E" tire inflated to 80 psi will have less "squirm" than a Load Range "D" tire inflated to 65 psi, when hauling heavy. Other than that, as long as the tires are rated for the load, you will be fine. I have Toyo MTs and periodically carry a heavy truck camper. I went with the Toyo MTs based on load rating for the size I use (3,750LBs/tire). They have been great!