Brake pads STOPTECH or OEM Mercedes

Stoptech Sport 309 pads are all I need on my stock power car.

I went to Stoptech Street pads at 35k miles on the fronts only, took care of the issue after a few bed-in runs. Still no shudder at 75k and original rotors

Grimmspeed MCB, STOPTECH Sport package (pads, rotors, lines) and the GR86 Shock/Strut retrofit.

I have stoptech "performance brake pads" on my front and rear. Feels like OEM but more dusty

It's a solid pedal feel.

To me it looks like brake pad material on your rotors due to your street pads melting. Slap a new set a cheap pads on there from Autozone or something and drive it for a week or two that material should come off. As long as you don’t have vibration while braking they should still be good. Just make sure to use track pads next time. I personally run StopTech 309 pads because they’re good on track and street

I got Stoptech Sport pads that I've used on track and street for many years.

Mercedes-Benz E55 AMG. Nothing particularly bad but having a German for it's age, essentially a supercar, and close to 200,000km when I sold it, quite a few bits and pieces needed replacing. Mechanically the best car I ever owned though. Just hoses, sensors, bushes, brake disc's and pads that kind of thing.

There was a noticable increase in stopping power, but it came with a significant increase in brake dust. They also started squealing recently. I recently checked the pad life and it's been okay. So far I've put 10k on em, and I'm estimating that 1/3 to 1/2 of their life has been used

MB advisor here, GLC brakes are horrible with noise.