Grinding and vibration sound coming from the front of the car. Feel and hear it around 35mph to 60 mph.
Mercedes-Benz Q&AAsk Your Question
2006 Mercedes-Benz R350 Question: How to know for sure if it's the front differential or the wheel bearings.
Visitor, July 18, 2011, 23:05
SOUNDS LIKE POSSIBLE BAD WHEEL BEARING, THE ONLY WAY TO KNOW IF IT IS DIFF OR BEARING IS TO ROAD TEST AND DIAGNOSE, I USE A CHASSIS EAR WHEN SYMPTOMS ARE NOT OBVIOUS, BUT I CAN DETERMINE FOR SURE WHICH IS DEFECTIVE.
HOPE THIS INFO WAS HELPFUL, FEEL FREE TO CONTACT ME IF YOU WOULD LIKE TO HAVE YOUR VEHICLE DIAGNOSED.
SINCERELY, RYAN MODE
Answer #2dewdaltz October 26, 2012, 00:04Rookie
I have the same problem as yours - grinding, vibration ( as if you are doing an engine break when you slow down). replaced mine thru dealership and paid just the labor and parts included as warranty even if I had 65000 miles already.