Hello Dan,

The Tec has the tool and works on mercedes/bmw He said he never saw a rear bearing go on a 300e... and never replaced one.

I wanted to see what was making the noise so after he got it apart I was expecting a dark blue bearing or some sort of scoring. I looked at the flange and where the bearing race rides there were groves. Is that normal? Looks like the race only rides on 1/16 of a inch on each side with a grove in the center… OR what the tec thinks is the bearing went and was turning on the flange causing the grove. The bearing was replaced and not the flange. The grove is not scorn like something was spinning on it. Could that grove be normal? I have only had the car for 6 months about 8K.