It’s been about 500 miles of city and some highway driving since I installed new Brembo high-carbon rotors and PBR Deluxe pads up front. I rotated my tires yesterday and in the process discovered that my rotors are as smooth as they day I bought them, with only minor cosmetic scratches – no brake pad grooves of any kind.

Is this is why I need more pedal pressure to stop? Is the high-carbon rotor too hard for the pad?

I was prepared to replace my calipers and possibly the master cylinder because of this, but now I am not sure. Something is definitely problematic since I noticed the pads and rotor I replaced on the driver’s side had asymmetrical wear, and the car (still) intermittently shudders a bit when braking.

Any thoughts?

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2008 E350 4matic / Black/Anthracite

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Gone but not Forgotten:
2001 E430 4matic, 206,xxx miles, Black/Charcoal
1995 E320, 252,xxx miles, Black/Grey
1989 260E, 223,00 miles, Black/Black