I went with the Porsche Macan front brake upgrade, got mine new from here:

Porsche Macan Front Caliper Kit with Brake Lines - s4 b8

A great kit to improve the braking power and is a direct replacement for the stock calipers and carriers. Base Kit includes 2x Genuine Porsche Brembo Callipers and HEL Performance front braided lines. You can choose your choice of disc patterns and pads on the options list. The kit will work...

unit82performanceparts.co.uk

I then used EBC disks and pads all round

Pleased with the results...

 

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I went with the Porsche Macan front brake upgrade, got mine new from here:

Porsche Macan Front Caliper Kit with Brake Lines - s4 b8

A great kit to improve the braking power and is a direct replacement for the stock calipers and carriers. Base Kit includes 2x Genuine Porsche Brembo Callipers and HEL Performance front braided lines. You can choose your choice of disc patterns and pads on the options list. The kit will work...

unit82performanceparts.co.uk

I then used EBC disks and pads all round

Pleased with the results...
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This looks AWESOME!!!
I'd like the very same set for my car. And I see you have even the same (or very similar) color on your Audi as well and even the same alloy wheels!!!

Yes that is how I imagine to do my set. Some Porsche Macan Calipers. Paint them black with an S5 logo and put on some quality performance rotors. How much of an improvement was it for you after the upgrade?

EDIT: The offer in the online store would be ideal but it seems they don't ship to Germany (?) Do you by any chance know of another Website with similar offers but with international shipping?

 

Seems to be the best bang for buck the Porsche Macan, a friend recommended them to me and seen a few have gone that route as well, theirs a decent write up on audizine that I read.

 

I would start with using more aggressive pads and upgrade to different rotors. I don't expect the calipers to make much difference unless you go bigger or from 4 to 6 pistons. What do you think switching the calipers will solve? What don't you like about your current setup?

 

I want to improve the way how the brake rotors heat-up. I have generally a problem with rotors slightly warping with time even after proper bedding in process. I have already warped 2 sets of good brake rotors. The last ones were BREMBO Xtra 09.B970.1X using brembo brake pads. I would like to go for a set of EBC brakes but I find it too risky to use them on stock calipers and damage them as well. I'm not doing track days but some mountain spirited driving from time to time and a lot of autobahn.

 

I got them powder coated by the guys who did my wheels, to be honest I was not that impressed with their work, clearly calipers is not their strong point.

The S5 logo came from Dave Kwatro on here.

Better is subjective, let's just say I am pleased with them, but I do need to change my fluid to performance fluid as I have found under consistent and heavy breaking i do get fade.

I had the time, inclination and funds so did the upgrade

 

I’m not impressed with powder coating, had my wheels done and wished I hadn’t. It’s all flaking off where stones have hit the surface.

 

To be fair the wheels are wearing well, not seen any chips yet. 2.5 years and around 10k miles.

Cleaning them however still remains a chore

 

I have peelers (S4) maybe they are more prone to stone chips, or just a bad powder coating job.

 

Here's my 4 pot S5 upgrade. Best bit is it uses the same discs and the pads were cheaper than the OEM S5 calipers.

https://www.a5oc.com/threads/s5-brake-upgrade-and-ebc-brakes.176619/?post_id=1620539#post-1620539

Or another upgrade is

https://www.a5oc.com/threads/380mm-big-brake-upgrade-for-a5-s5.176686/?post_id=1620835#post-1620835

But the discs can be expensive and not many aftermarket options.

 

Following Dave's post above I did the same to my S5 using A7 TDI calipers using S5 pads and discs. Another benefit is the weight saving over the standard S5 calipers.

 

Can someone explain to me what is so bad about the S5 calipers that a set of decent pads and rotors can't fix?

 

They're not bad, just on the limit of a single piston caliper for that size disc. Yes they can be upgraded with pads and discs, but the 4 pot brembo calipers are better for bite and braking performance. Fixed calipers with multi pistons are better than sliding single piston calipers.

 

Thank you for your input on the topic. I think I'll go with the Macan 4-piston calipers along with a brake line upgrade and fresh brake fluid.

 

These are the A7 brake calipers I got from eBay. They are the same I believe as the Porsche Macan calipers.

I got them for £350.

 

Painted black and fitted behind my 20" Le Mans.

Wheels needed a clean I know!

 

Yes, they are the same calipers that I got, but from a Q5. I only paid £150 for a pair, but they were a bit crusty!

Difficult to find and quite common to find the similar ones, but for 320mm discs! That's why most end up going for the Macan ones,but same caliper!

 

When I did mine I searched ebay for a while and there were none available or were the same price as the new Maccan ones, so went for the new ones...

 

Another thread of interest

https://www.a5oc.com/threads/sq5-380-mm-front-and-330-mm-rear-brake-upgrade-on-2010-3-0-tdi.181884/

 

The front SQ5 brake calipers look massive from the outside, but still it's only a 2-piston sliding caliper, which I think could potentially share the same issues as the single piston sliding caliper from the stock S5. And I have a feeling my 18'' winter set would not fit anymore.