dvitale300 wrote:
I've got the same rig you have. I have a 31 ft Starcraft Launch Ultre Light. When I bought my TT I told the RV dealer to set it up right or I would drive the whole thing into their show room if it wasn't. They put on a WDH and electronic break switch. I have zero problems towing. No sway at all. I have found that the sweet spot speed on the open highway for me is about 68 mph. Mainly for gas. I average about 7.8 mpg without significant winds. I can go faster, low 70's, but gas mileage drops down to 6.8 mpg if I do. Next truck will be a 2500 diesel. For three reasons: one is power, the second is gas mileage and the third is the ability to refuel in diesel pull throughs.
The fact that you have had zero problems does NOT mean you are under all weight limits including truck and trailer payloads. According to your post, you are exceeding the speed ratings of your tires. What other limits are you exceeding? You should get your rig weighed.