| Lower ride height = better mpg? - Click HERE for Original Thread |
| Bentmetal |
I was reading a magazine yesterday and i came upon this ad for Eibach springs. http://eibach.com/cgi-bin/start.exe...=y&thid=122
It makes sense and all but i was wondering if people have actually gotten better fuel economy from lowering their vehicles ride height. |
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| Blackout-spec |
my car is probably 3" lower then stock, i wouldnt say my gas mileage is improved.
im assuming this has to do with aerodynamics?
maby if you put sheet metal all along the bottom of your car to help with drag you would get increased mileage... |
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| JoshP2002 |
| It makes sense, lower vehicle making it more aerodynamic, but all in all Id say it would be such a minimal difference you wouldnt even notice like Blackout said. Probably more for a marketing scheme than anything. |
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| LeadSled |
There was an article in Hot Rod a year or two ago about DIY aerodynamics.
If you are looking for better mileage, a lower aero profile is going to help. They mentioned that most car bodies create lift though, so you can actually improve high speed stability with no drag penalty by lowering the front more than the rear. The lower front moves air from traveling under the car (which causes major drag) and the slightly higher rear (by an inch or so) will create a wedge shaped void under the car that creates a suction effect.
And an air dam under the front is also a bonus.
I can also say that raising a vehicle will hurt gas mileage noticeably. |
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| SilverNeonRacer |
| Also kinda off topic run narrow tires... so instead of say 265's run 195s and milage will go up, or find tires that have a lower rotaional resistance(can't remember the proper term, but some tires "spin" easier than others.) |
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| Blackout-spec |
| im assuming the higher the treadware, the less resistance there is on the road which in turn will 'spin' easier. |
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| SpeedwayRacing |
| Personally I find add like that to be more of a excuse for you to show your wife / girlfriend when tuning your car. Your not going to see a real aerodynamic advantage tell the car gets about half a inch off the ground in the front. At that point the car is pretty much useless on the street. If you want to get that serious about it save your self some money and go out to your car with a roll of duct tape and tape over all of the body lines on the front half of the car. Put foam in all the vent areas in the front of the car that don't lead somewhere usefull. |
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| JoshP2002 |
| Id imagine though that as marginal an "upgrade" as they may be, once they're all together they would possibly make a difference. |
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| STiPWR |
| Edited... dont feel like trying to explaining it. |
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| Dan_Gyoba |
The under car effect is one thing, but lowering the car isn't going to do much for that.
Filling the wheel wells a bit more might, depending on the wheels that you use. Covered wheels will help with drag more than open wheels do. |
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| GOT BOOST |
My fuel mileage and boost pressure, speedometer, throttle position are inversely related.
The farther down my throttle position is, the higher my boost, the faster I go, the less fuel mileage I have. :D
I have not factored in ride height, but I am somewhat low. :D
Mike |
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