Rumbling sound/sensation under driver footwell -- 2007 S60

[chrism]

Does it rumble worse when accelerating heavily? If so, suspect the CV joints.

[thebigsee]

Someone either used crappy parts or they damaged the bearing putting it in. The bearings on these cars are massive FAG and last 150k or more if they are OEM. I had one go at 150k and one at 175k and I was the earliest failure until your post.

Replaced the original Volvo bearing at 45,000 miles, so that means either Volvo parts are low-quality or they did a poor installation . When I bought the car I read on this and other forums that the wheel bearings on the S60 are a weak point. I don't know if that's true but it certainly has been the case for me.