Thinking about a leveling kit,think again
09-11-2015, 11:00 AM
#21
09-11-2015, 11:04 AM
#22
Mark
iTrader: (1)
09-11-2015, 11:13 AM
#23
Member
09-11-2015, 11:21 AM
#24
09-11-2015, 11:23 AM
#25
Senior Member
I noticed around a 1mpg drop at highway speeds, just by removing that stupid piece of plastic that hangs down behind the front bumper.
It is hard to see, but you can just make it out on the left picture.
It is amazing what wind resistance will do to you. I would think by raising the front of your truck, more air would get between it and the road, that in turn would cause more drag, thus reducing MPG. At slower speeds I think this would be less noticeable, however the faster you go, the more wind resistance plays a part on your MPG. I was amazed that removing that ugly hanging plastic had any effect on my truck at all.
09-11-2015, 11:38 AM
#26
Senior Member
I lost 1 mpg after adding my 1.5 AS. Calculated by hand and by the truck. Mostly highway driving. I doubt it would be noticeable if only driving around town.
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techrep (09-11-2015)
09-11-2015, 01:08 PM
#27
When you look at auto racing a 1/4" on ride height or a spoiler can make a big deference on the performance of a car. So I can definitely believe jacking the front of a truck up a few inches can affect the aerodynamics enough to hurt fuel economy.
09-11-2015, 02:31 PM
#28
How's she goin' eh?
I noticed around a 1mpg drop at highway speeds, just by removing that stupid piece of plastic that hangs down behind the front bumper.
Attachment 394127
It is hard to see, but you can just make it out on the left picture.
It is amazing what wind resistance will do to you. I would think by raising the front of your truck, more air would get between it and the road, that in turn would cause more drag, thus reducing MPG. At slower speeds I think this would be less noticeable, however the faster you go, the more wind resistance plays a part on your MPG. I was amazed that removing that ugly hanging plastic had any effect on my truck at all.
Attachment 394127
It is hard to see, but you can just make it out on the left picture.
It is amazing what wind resistance will do to you. I would think by raising the front of your truck, more air would get between it and the road, that in turn would cause more drag, thus reducing MPG. At slower speeds I think this would be less noticeable, however the faster you go, the more wind resistance plays a part on your MPG. I was amazed that removing that ugly hanging plastic had any effect on my truck at all.
09-11-2015, 03:45 PM
#30
How does the spring rate change when you apply a spacer to the top of the strut asssembly? In a coil over where you can adjust the preload sure but I can't see a lot of change outside of cv/lower control arm angles. I may be wrong bc I'm not familiar at all with ifs lifts. All of my experience in lifted vehicles are on coil sprung straight axles.
