Functional rear spoilers?

[2mAn]

I take laxatives before I race, every pound counts.

Im going to sand my car down to bare metal eventually, but first I must take care of aerodynamics :hitler:

[e30m3s54turbo]

one more thing to discuss about your car at the meets brahh.

Check the red e30 in his sig. It has a Zender wing with a adjustable flap.

[blue plates]

I take laxatives before I race, every pound counts.

[2mAn]

Theres some crazy spoilers on the fast autox cars and those speeds are never over 100mph, so Id say they are useful. My car is all about function over form, and every little bit adds up. Front spoiler, rear spoiler, mirrors, etc. these are all things Im looking into improving as long as its not the 0.01% improvement that the iS does

[ELVA164]

Ask those who know (e.g. engineers, racers, or both in one) and they'll say it makes a difference at even autocross speeds, especially in a light car. Air is pretty dense fluid. I know that only because I also believed it didn't matter and got told.

[15Michaeljoseph]

Why do you even care? I'm assuming this is on a street car not a race car, so WGAF?

I've always understood that downforce is negligible at speeds under 100 mph with just about any wing on any car.

I'm not sure about that... I'd say downforce starts becoming a thing around 65-70 no?


--Mike

[MPLFoster]

Why do you even care? I'm assuming this is on a street car not a race car, so WGAF?

I've always understood that downforce is negligible at speeds under 100 mph with just about any wing on any car.

all sarcasm aside...

one more thing to discuss about your car at the meets brahh.

...this^

It's interesting to know. mostly interested in drag since the right aero mods can contribute to MPG.

[mrcheezle19]

Why do you even care? I'm assuming this is on a street car not a race car, so WGAF?

I've always understood that downforce is negligible at speeds under 100 mph with just about any wing on any car.

one more thing to discuss about your car at the meets brahh.

[AndrewBird]

Why do you even care? I'm assuming this is on a street car not a race car, so WGAF?

I've always understood that downforce is negligible at speeds under 100 mph with just about any wing on any car.

[MPLFoster]

Interesting...i'd like to know as much info about my Hartge spoiler as possible. Was wondering if there is any benefit to either drag coefficient or down-force.

anyone actually using vortex generators on the roof combined with a deck-lid spoiler? Any data?

[ELVA164]

There was a discussion here on drag coefficients a couple of years ago. I seem to recall it mentioned the iS spoiler as being functional, but only by a fraction.

That sounds familiar to me as well. It was like 3% reduction in turbulence behind the car? Also the db spoiler valance gained the SE30 guys like 5mph on the straights.

[Daeldalus]

downforce or drag coefficient?
m3 evo is probably the best downforce without doing super ricer wing

a vortex generator roof spoiler may be the best for drag coefficient

[agent]

There was a discussion here on drag coefficients a couple of years ago. I seem to recall it mentioned the iS spoiler as being functional, but only by a fraction.

[blue plates]

No!

[goarmy]

E30 m3 would be my best bet as the championship records speak for them self's.