Brake pads Zimmermann or OEM Audi

That's probably the kit I'd go with for my GLI. Again, as a daily driver... it meets the needs. The semi-metallic pads work good in many different temp ranges. However, semi-metallic pads also produce more brake dust, so you'll get more debris on your rotors faster. One of the other downsides is that they're more aggressive on the braking rotor because they're metallic, so you'll need to check your rotors more often for thinning.

Yes. I do oil, break pads and rotors all the standard stuff

I bought the Zimmerman kit with ceramic pads from FCPEuro for $530 front and rear and did the work myself.

The rear brake wear on the B9 SQ5 is a known thing. The programming for stability control is super aggressive on applying the rear brakes on turns to keep the rear of the car planted so the rear pads wear down fast if you are even just a moderately spirited driver. The rear pads on my SQ5 only lasted 17k before reaching 2mm

They work great they are an oem supplier.

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 found a nominal improvement in braking power and feel with the 12.3". But as NOVAdub stated, the biggest impact was on repeatability.

Anyone with TTRS fronts has this problem? I definitely noticed this problem ever since I installed Audi TTRS front brakes. I also use Carbs.

If you want an honest oppinion, do not run these brakes, just get yourself a corrado set up w/ good pads and you will be more than happy.