RS246.com Forum :: The World's #1 Audi R, S and RS Enthusiast Community

I got myself some new brakes.

Welcome from Australia.

It looks like a doily.

Not being a hater, I first saw these at ADI last year. Not a fan I am afraid . Once they have lost their shineyness they will probably look better.

...whats the purpose of the shape?

Ask the motor bike boys, they have been using wavey discs for years.

mavada wrote:...whats the purpose of the shape?

According to Audi improved airflow and cooling

No
Weight saving.

armyair wrote:

mavada wrote:...whats the purpose of the shape?

According to Audi improved airflow and cooling

For the amount of weight they'd save , I'd be better off emptying the ashtray instead

Think it was 1.2kg each iirc

D_K wrote:No
Weight saving.

armyair wrote:

mavada wrote:...whats the purpose of the shape?

According to Audi improved airflow and cooling

Looks like we are both right!

http://www.audi.co.uk/about-audi/latest ... avant.html

Quote Audi
"High performance wave disc brakes

Mounted behind the large wheels are internally vented wave disc brakes with high gloss black-painted callipers. The front callipers with their eight pistons and prominent RS logos measure 365 millimetres in diameter. The steel friction rings with their wave-like outer contour are perforated and connected to the aluminium brake caps via pins. This concept reduces tensions, quickly dissipates heat and prevents transmission of temperature peaks. The new shape of the friction rings shaves a total of roughly three kilograms off the unsprung weight."

Weight saving on R8 is a total of 2kg according to literature so obviously differs according to rotor diameter/radius.

As an engineer I would guess the primary design objective would be to increase the edge surface area to aid cooling and a by-product is weight saving as there are far easier ways to save weight without effecting the rotational mass and balance however it's easier for marketing men to sell weight saving!

Nice work! Spill the beans. Were these a straight bolt-on or is there some blackmagic going? New 8pots or did you spruce up your C5 8pots?
I'd be interested in the rear setup, can you post some pictures.

Also, I've developed a pure hatred of the door badges. Please crop or potatochop them out of all future pictures. That is all.

Looks interesting, probably need to see the car IRL to figure out if it looks "right" or not though.

It's losing styling points for misplaced badges, but worse than that the gigantic wheels make the stock brakes look too small. Should've gone to a larger C6 setup to restore balance instead of messing with wavy rotors. That would count as an upgrade and isn't really that expensive (surprisingly)

Tough crowd, I know.

How big are they? The look a tad small.