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Discussion Starter · #1 ·
Is there a significant difference in mileage if you get the 17" rims or the 20" rims on the ED?
 

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The difference in fuel economy form rims tires is down to...

1 - weight of the wheels
2 - weight of the tires
3 - rolling resistance of the actual tires installed
4 - small bit down to sizes/widths exposed to the wind

Overall diameter of the two combos can effectively be identical, so that being equal, just having a larger rim won't affect MPG. Going with an actually taller overall wheel/tire package can affect it, however. And again, if the weight of the wheel increases, that hurts MPG. "Significant" is a very subjective term, too. Is 2 mpg significant in your mind? Or is it more like 5 mpg?

Having low tire pressures can drop a MPG or more.

Driving with your windows down can impact you to the same degree.
 

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Discussion Starter · #3 ·
The difference in fuel economy form rims tires is down to...

1 - weight of the wheels
2 - weight of the tires
3 - rolling resistance of the actual tires installed
4 - small bit down to sizes/widths exposed to the wind

Overall diameter of the two combos can effectively be identical, so that being equal, just having a larger rim won't affect MPG. Going with an actually taller overall wheel/tire package can affect it, however. And again, if the weight of the wheel increases, that hurts MPG. "Significant" is a very subjective term, too. Is 2 mpg significant in your mind? Or is it more like 5 mpg?

Having low tire pressures can drop a MPG or more.

Driving with your windows down can impact you to the same degree.

Ok..so how about some guys with the ED Crewcab 4x4 with 20" rims post up some of your MPG numbers please..
 
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