Downforce Comparisons

[Bodhii]

Downforce Comparisons


Audi R8 V10 5.2
(A) 2.024m²
(cd) 0.36
(cd x A) 0.72
at 200km/h
lift front 23kg
downforce rear 3kg




Porsche GT3 facelift
(A) 2.04 m²
(cd) 0.32
(cd × A) 0.66
at 200km/h
downforce front 15kg
downforce rear 19kg




Ferrari 430 Scuderia
(A): 2.02 m²
(cd): 0.33
(cd × A): 0.66
at 200km/h
lift rear 4kg





Lamborghini Gallardo LP 560-4
(A) 1.93 m²
(cd) 0.35
(cd × A) 0.67
at 200km/h
downforce front 4kg
lift rear 37kg





Nissan GT-R
(A) 2,30 m²
(cd) 0,31
(cd × A) 0,71
at 200km/h
lift front 3kg
downforce rear 8kg





Ford GT
(A) 1.92 m²
(cd) 0.35
(cd × A) 0.67
at 200km/h
downforce front 44kg
lift rear 2kg




Corvette ZR1
(A) 2.059 m²
(cd) 0.32
(cd × A) 0.66
at 200km/h
lift front 39kg
lift rear 14kg




Aston Martin DBS
(A): 2.11 m²
(cd): 0.36
(cd × A): 0.76
at 200km/h
lift front 11kg
lift rear 10kg




Pagani Zonda F
(A): 2,08 m²
(cd): 0,36
(cd × A): 0,74
at 200km/h
downforce front 1kg
downforce rear 25kg



Koenigsegg CCR
(A): 1,86 m²
(cd): 0,35
(cd × A): 0,64
at 200km/h
downforce front 13kg
lift rear 11kg





Gumpert Apollo Sport
(A): 1,99 m²
(cd): 0,57
(cd × A): 1,14
downforce front 20kg
downforce rear 176kg





Porsche Carrera GT
(A): 1.95 m²
(cd): 0.37
(cd × A): 0.72
at 200km/h
downforce front 49kg
downforce rear 40g




Lotus Exige S
(A): 1.62 m²
(cd): 0.44
(cd × A): 0.71
at 200km/h
downforce front 5kg
downforce rear 24kg




Ford Focus RS
(A) 2,35 m²
(cd) 0,36
(cd × A) 0,86
at 200km/h
downforce front 8kg
lift rear 4kg




Mercedes SL 65 AMG Black Series
(A) 2.17 m²
(cd) 0.37
(cd × A) 0.80
at 200km/h
lift front 56kg
downforce rear 22kg




.

[KfabR8]

Gumpert Apollo Sport
(A): 1,99 m²
(cd): 0,57
(cd × A): 1,14
downforce front 20kg
downforce rear 176kg
------------------------

I'm betting that high cd is a direct result of the rear downforce.

That's some interesting stuff.

Audi R8 V10 5.2
lift front 23kg
downforce rear 3kg

How much of a difference does a splitter up front make? I know that I've seen a couple threads talking about putting splitters on the R8 and I wondered how much it helps with the front end lift.

[bz888]

This confirms the fact that a Serious Front Splitter and Rear Wing from APR will help frequent R8 track drivers! The R8 needs more downforce or be neutral at the very least.

Bodhii, did you get a chance to go to APR?

[LAT]

Are the numbers available for the GT

[Bodhii]

My car just got there. Hopefully in a couple of weeks we will have something good. At least we are trying! Meanwhile,..
I'm skiing in Utah!!!

[the_buch]

The airflow photo for the R8 doesn't show the spoiler deployed, but I assume that would be the case at 200 km/h outside the windtunnel?? If they measured with the spoiler down then how would the numbers be expected to change??

[bz888]

The airflow photo for the R8 doesn't show the spoiler deployed, but I assume that would be the case at 200 km/h outside the windtunnel?? If they measured with the spoiler down then how would the numbers be expected to change??

Noticed that too. Would definitely help rear downforce. BUT, the front end of the R8 is the problem. Since Audi cut out the lip to assist with driveways and obstructions, the front end of the car is not producing ANY downforce and in fact, produces LIFT!

This needs to be addressed for my situation.
Bodhii!! You are the MAN! Hopefully you guys and APR can produce some good results!!

Cheers.

[gazza1]

Anyone know what the Audi R8 GT Front spoiler and winglets adds or changes??

[LAT]

L Since Audi cut out the lip to assist with driveways and obstructions, the front end of the car is not producing ANY downforce and in fact, produces LIFT!

Cheers.

Is there an original OEM lip you can copy or purchase?


l

[R8Spyderman]

The Owner's Manual states that the rear spoiler MUST be deployed at speeds of 80 MPH or greater, so unless it was manually raised, it wouldn't automatically deploy in a wind tunnel, so those results may be meaningless.