Mmr1

After about 200 miles this is what left front brake look like. (Notice right front is super clean) It's brake dust from heavier braking than other wheels. MB put on a new caliper. This is after the new caliper. What is causing this. Can this affect my safety ? MB dealer said its ok. I don't think so.

Mmr1

I tried loading two photos in original post , I wasn't able to. Just got vehicle, certified used at MB full warranty. Pads are new

Mmr1

Sorry I can only post one image per post .

Mmr1

Right front