Brake Rotor Question re: holes...





As you can see, the drilled holes are completely gone now. The rears are fine and still look like this:

My MLs front rotors used to look like this:

Just recently I was at the dealer getting a suspension issue addressed, but my SA told me that it's perfectly normal and the holes in the rotors were designed to "fill in" like that.

I figured I'd ask the real experts and see what's really up as his answer sounded odd to me. TIA.
Seriously doubt that the holes were "designed" to be "filled in". Arent they there to assist in cooling? It amazes me the poor level of knowledge at MB service depts. Top tech guy at my dealer here in Aust did not even know what reflashing an ECU meant




I wouldve thought my SA wouldve used this as an excuse for needing new rotors to get more $$$ out of me.




