Hello , I have a 2007 F250 with the factory Goodyear 20 inch tires and they are a E load range tire. I am buying some new wheels and going to a Toyo open country 325/60/20 with a D range. The factory wheel has a max load of 3750 and the toyo has a max load of 3195. Am I looking for troubles when I tow a big trailer? Are there any e rated tires in the 325/60/20 size? If not how does everyone tow anything with the big wheels and tires? Maybe a stupid question but I do not know anything about the load range. Thanks for your help, Mike

 

when towing the only thing to worry about is the tongue wt.
this will not put you over
the tow wt. goes to your gross combined wt. rating
3195 X 4 = 12780 lbs.
I'm sure your vehicle GVW is lower so there should not be any conflict
as long as the truck is not over loaded

 

You made me think to check the plate on the truck and it says.
gvwr 10,000 lbs
Front gawr 5600 lbs
rear gawr 6100 lbs.

So it looks like the e rated were overkill and the d rated should be fine? Thanks