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Have been looking at brake upgrade options and this popped up on eBay

http://www.ebay.co.uk/itm/Audi-SQ5-QS5- ... 3a845e8dc5

Listed as 380mm discs, only a four pot caliper, but a hell of a lot cheaper than the rs5 upgrade.

Surely a bigger disc will give better performance than the 345mm disc at the moment ?

It should keep the disc cooler but what will the sweep be like?

Have no idea...sooty ?

Let's wait for Little Cousin Scampi to chime in.

You won't be able to use them if there's a pad overlap.

Kiteral wrote:QS5

Yep thats the one.

If you winters are 19" also, those will be perfect, plug and play, no pad issues, mounts and brake cylinders are the same.

As mentioned Saturday, non SQ5 3.0 TDi quattro Q5 models run S4 345 x 30mm discs and very similar Brembo 4 pot calipers to the SQ5. The calipers look different which makes sense for the pad overlap reasons Bam highlights (would be different pads on 345 v 380 mm discs)

Comparison

A Sept 2013 '63' plate Audi Q5 3.0 TDI quattro S Line Plus (245PS) on Audi Approved - 345 x 30mm

http://www.supercar.co.uk/HighResImage. ... C=2&View=6

And an SQ5, 380 x 36mm (under 21" alloys)

http://www.supercar.co.uk/HighResImage. ... C=2&View=5

This is a good thread for stock S4 345 mm brakes and upgrade 3.0 TDi calipers

http://www.audizine.com/forum/showthrea ... kes-for-b8

Recent Motor Trend tests show some pretty impressive stopping distance numbers from the SQ5.
Motor Trend testing of 2007 RS4 in 2006:
0-60: 4.5s
1/4 mile: 13.0s @ 102.1 mph
60-0 braking: 112 ft

Motor Trend testing of 2014 SQ5 in 2013:
0-60: 4.8s
1/4 mile: 13.5s @ 102.2 mph
60-0 braking: 104 ft