I would guess the Form OEM wheels are in that same range. You will be adding weight with larger tires. Dont think there is a way around that.
When I went up in size with the Falkens on my 2014 F150, the weight went up and MPGs tanked.
I would expect this on any vehicle
Tire rack lists the weight of the tire, so that part is easy. 34 or 36lbs each if i recall.
Wheels will take more effort. Call ford maybe?
Most AT 8-10 ply are 50lbs.......will need a very lightweight wheel to compensate.
You can get the slider on any truck as an option. Dont need a certain package.
The ranger slider comes with rear defrost, so spme wiring is needed.
I order the slider with my STX because i wanted the defrost
I think you should find the source, instead of hiding the problem. Its under warranty. Take it to the dealer. Drive another to compare.
This the the quietest vehicle i have owned. By far. You have something amiss.
Smooth street ride.....not with the FX4.
Designed for off road use. Pavement ride will suffer. Should have got non-FX4 4x4 if you wanted smooth street ride.
What pressure are your tires? I have not noticed any excessive bounce. It rides a ton better than my 2014 F150.
I have the bridgestone tires around 31/32 cold
Both the open and locking rear for 2019 has 3.73 gears. Not sure where you are getting the 2.73 from. I havent seen a gear that high in a production truck.
Doubt that is changed for 2020.