RedRyder
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^think you'll be hitting speeds where you'd actually need that downforce?
^think you'll be hitting speeds where you'd actually need that downforce?
Most aftermarket and nearly all OEM rear spoilers/wings provide little or no downforce. They are appearance items and if anything just add drag.
Without a wind tunnel you have no way of knowing how much or how little downforce such an item is adding or any way of balancing the front and the rear.
That said, rear axle traction is absolutely critical on a FWD car. What happens to a FWD car in mid-corner if the rear axle looses traction?
You find yourself backwards into the armco staring back at the track in the direction from whence you came. Few people seem to understand that the rear wheels are critical to vehicle stability on a FWD - they don't merely keep the trunk from dragging on the ground.
performance driving instructor
My car lifts a lot during hard driving which a good added downforce in the rear could help stop that a lot
Quote
It's time for another episode of Mechanical Mythology. This time, I'll tackle a batch of automotive wing misconceptions.
Claim: A front wheel drive car cannot benefit from using a rear-mounted wing to create downforce.
Status: False.
Many people assume the purpose of a wing is to give the driving wheels more traction under acceleration. If this were the case, a rear-mounted wing would have no purpose whatsoever on a front wheel drive car. After all, it's not going to smoke the rear tires when you floor it.
The truth is that many winged race cars cannot generate enough power to smoke the tires at speeds where their wings are effective. In reality, the wings are there to help generate force for cornering, not acceleration. Most compact cars on the market today can benefit from considerably more grip before they are in any danger of overturning.
Some have argued that front wheel drive cars still do not need rear downforce because they are prone to understeer. However, as many experienced racers will tell you, this certainly is not true of all front wheel drive cars under all circumstances. I used to autocross a Ford Probe GT where the rear tires would lose traction if I stepped on the brakes - or sometimes just lifted my foot off the throttle - while turning hard. And a bit of rear downforce can help make sure your car keeps all four tires on the ground, as many front wheel drive cars are known for cornering on three wheels.

It's not for high speed downforce. There is low speed downforce which is what I need. Plus ill be needing It also for club racing
Hooked up my illumination and VSS wires on my D3. Now I have more accurate GPS and Vehicle Dynamics![]()
