|
Lets not forget what the definition of drag coefficient is.
if you compare .6 to .4, the .4 is a 33 percent improvement. Or, the lower number will burn 33 percent less gasoline at speed than the bigger number.
it would take a LOT of weight at 60 mph to make that much difference.
On the order of thousands of pounds for most cars.
Let me try to state it another way. For a given frontal area, if you want 33 percent better mileage, you can drop drop the drag coefficient from .6 to .4 or you can cut the weight of the car by 2/3 or more.
I'd have to go use the calculator, but it is entirely possible you cannot raise your MPG by 1/3 at 60 mph by weight reduction.
|