When I had my mini cooper, I ran the 1521s on stock rotors and never had any issue in the rain.
My car has smaller brakes than yours, so I was able to downsize to a 245 45R17 for winter use from the 255 35R19 summers and the car is so much smoother but still can handle just as good.
I managed to get my hand on a set of MK1 Audi TT front and rear brakes for a steal, also round the corner to my work which was even better. This takes my front brakes from 288mm up to 312mm and takes my rear brakes from 232mm solid discs to 256mm vented discs.
I had my S3 in last Friday and the dealership managed to fix my tick/click. I took a video of the noise before taking it in for service but it didn't turn out as well as nikhsub1's; however, the noise was almost identical to nikhsub1's but mine only happened when turning to the right. I would hazard a guess that it may be the same issue some are experiencing with the R. I didn't get the chance to talk to the technician directly but the service writer described the issue as a loose pin or tab on the brakes that was making contact with the rotor.
I saw a review of the GTI with the PP and the reviewer said the brakes on the PP are the same brakes used on the Audi S3.
I have run the Carbotech 1521 on the street and can confirm they are low dust and noise, but not the most performance oriented.
I just changed my pads and rotors at all four corners asI was always very unhappy with the stock pads and rotors; mostly because of noise in the cold and the amount of brake dust the pads made. Upon inspection of my rotors, with barely 30k miles on them, there was a startling amount of material removed and channeling from the pads. I would totally recommend you replace the rotors at the same time. I too went with the ECS slotted and drilled rotors with Carbotech 1521 pads and love the setup. Very quiet, very little dust and good performance.
Carbotech Pads (F-CT682 & R-CT340 1521 Street Compound)
Stock pads are terrible for longevity. They have to do too many different things from factory, buy a set of aftermarket to your needs. I had a set of Carbotech which lasted 50k in the front and over 60k in the rear, with aggressive driving.
Anyone with TTRS fronts has this problem? I definitely noticed this problem ever since I installed Audi TTRS front brakes. I also use Carbs.
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