Rear wheel bearing replacement on a 2002

[cayman150]

Have you looked to see if there is anything rubbing on your driveshaft?

[SoCal Waite]

If I was in your shoes, check the Parking Brakes for a broken return spring, or maybe the Park Brake shoes are worn to the point that the sound you're hearing is the metal of a/the shoe(s) dragging.

You wouldn't necessarily see leakage from a bad bearing, as the seal is a separate from the outer bearings. Also could be possible that something kicked up off the road just right and maybe bent a dust cover on the back side of a rotor and its ever so slightly dragging on the rotor itself.

If while you have it jacked up and you find none of these (including anything rubbing on the driveshaft), you can check the play in the axle itself to determine if a bearing has gone bad.

Let us know what you find