I have towed with one of my two 07' Escalade's, once from PA to Quebec and back, that was with 18's and my snow tires, and I just towed from the Pocono's back to my other PA home with 22's, that was only 100 miles. I installed dual batteries in my 07's. My trailer I was pulling was about 7000 lbs to Quebec and about 5500 lbs from the Pocono's. The 07' did great pulling the trailer, it was a better ride since I installed Hotchkis sway bars handling wise pulling the trailer, you will know you are pulling a trailer if you are going up and down thru the mountains, but on flat roads you almost forget it's behind you. You do have electric brakes on the trailer right? You want them.