Aerodynamics are top of the list sooo....
No roof rack, nothing hanging outside the vehicle.... period. Manufacturers are pretty good at cd efficiency thing. ADD anything outside kills gas mileage, range.
Tires, keep them stock. Adding diameter, rotational mass, unsprung weight kills economy and range. Forget ego if you want to run 350 miles on a tank.
Speed, the last real component. Unless you buy something so ugly it is a hyper miler..... speed, anything over 50mph kills range.
Any other discussions are just guys trying to justify an RTT or lifts and 33s or driving fast.
The Holy Grail to extending range is as old as the automobile.
Clean aerodynamics.
Minimal rotational mass.
Speed..... rather lack of speed.
There are no secrets.
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