My car has been having some funny sound from the wheels under braking, it's like the wheel is rubbing the body, but coudn't find any mark inside the wheel arch. I only have stock wheels and tyres.

 

Need more details on kind of sound, condition of your current tires, brake or suspension mods (if any), etc.

 

could it be yr wheel bearings wearing out?

 

It's like it's dragging something under braking, the tires are good, the brake is ok (at least the onboard computer say), no suspension mods on my car, it's all stock. Mine only just done 20k mile, could it be the bearing?

 

Doubt it would be the bearing with those ks but you never know. Iv seen the shield around the disc get knocked up against the disc and rub although you should have that noise permanently not just under braking. Do your discs have an unusual shine on them?

 

I have this problem on my 57 plate Touring. Usually from above 60 and braking medium to hard. Sounds like a loud droning noise. Only happens under braking and from speed. My first thoughts were a diff problem. Going in for a service next month so hopefully get it sorted then.

 

I actually had a similar sound on my 530xi. I would brake on the highway, and the sound was similar to siren as it is winding down.

I even took my mechanic with me, and he heard it also....but I wish I could tell you he found a solution.

I, however, did find a solution. I got rid of the car...problem solved.

 

Then ... what sorta noise you heard before you got rid of the M5?

 

It was the sound of $4.39 premium gas sucking the life out of me.

 

You should have the brakes checked out even though iDrive says otherwise.