Hello , I just took a test drive in a 19 AT4 . First off I really like this pickup , looks great , interior is nice , stereo blows the Ford Sony out of the water . Only thing I did not like at all was the ride at HWY speeds , the AT4 has 18" wheels and I think Duratracs ? Anyway the ride was really floaty and seemed rather unstable at 70mph . Is this due to the tires ? The Ford I am currently driving is a 16 Lariat with 20" BFG KO2's and Fox coilovers and its night and day .I get the coilovers improved the Ford but I still think the AT4 should be better ? Would the AT4 w/20's and different tires make it more stable ride ? I would have purchased on the spot but teh ride kept me from doing so . Sales rep said they getting another one with 20's in and will call me when available . One last thing , I had a 14 Denali and a 15 AT that both had tranny issues , the 10spd shifted like a dream .