[Dave-ROR]

Originally Posted by bambbrose

What about a high speed sweeper? I think the spoiler is just as justified on an NA car as on a turbo car. The spoiler does an un-appreciable amount of work below 50 MPH, so really offers no benefit for either scenario. At higher speeds, the only way this car is going to be pushing the limits of the tires is on a high speed turn, unless of course you are talking about 500 whp drags cars, etc.

The turbo car is going to be pushing the physical limits of a tire, at speeds that a spoiler counts, just the same as an NA car. They will both be able to exceed the limit of the tire by simply changing the approach and speed in the turn. It is the longitudinal forces that exceed grip at speed during a turn, not the lateral.

Also under hard braking the rear wing's downforce can help keep the rear settled. This is all assuming it's functional and not just for looks.