I have an 09 Ram with 20's for wheels, I can get a set of 17's with tires that are the painted type for winter. They are from an 04, my worry is will they fit in the wheels over the brakes is my real worry, seems this truck has some large brake rotors.

 

The TRX's come with 17's and the offset is +20..... So I would imagine you'd be fine with the 17's from the 04.

 

Hell if you were anywhere near me I'd sell you my stock 20s. I wonder how much they would cost to ship...hmm..