Really weird how identical trucks will act differently. I only have a little over 34,300 miles on my 2013 dually and have never experienced wobble or vibration of any kind at any speed, towing or just cruising...I've towed at a constant 65 mph and even 70 mph one occasion when this subject was brought up on the Cummins forum. Empty, I've had my truck up to 100 mph, ( no, I don't recommend that, and I shouldn't have done it, but again, I was wondering if my truck had some wobble or vibration I've never experienced at speeds from 0-72 mph)....As far as ride, mine really isn't that bad for a 3500, long bed, crew cab dually. I've towed with it for 8 hrs and just taken trips with the wife for 6-7 hrs and never felt the ride was that bad...maybe I'm too old to notice the difference:)
