Congrats on nice rig.
We have a 2016 24.1. Tows 5500 lb open racecar trailer easily. On average, we see no more than .5 MPG hit with extra weight. At scale we are around 18,500 GCVW. Our Vegas is heavier than average due to spares, tools, etc in back compartments. First time I weighed was heavy on front axle so I moved heavier items back. I was also high on tongue weight.
I am able to get in to tight places without issue. Merging and accelerating with trailer is also no issue. Seems like it shifts 3 times before 25-25 MPH. Keeping up with traffic is no issue.
At 18,500 lbs, we got one our best overall MPG per tank average of 10.7 MPG drafting a big DP on I-95. Worst was below 9 on kamikazee run. Unit will cruise at 80 but wife does not like the noise.
Good luck with you machine. Keep tongue weight in mind, hitch has 500 lb rated max tongue even though is 8000 drawbar. It has something to do with framerail extensions. I have had my double axle open trailer at 350/400 without issue on highway and it does not sway or try to steer Vegas.
With the taller tires, lower RPM do you notice any pinging from motor? I will usually top up with premium as mine will sound like it rattles a bit under certain outside temp/load conditions.
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