Originally posted by: Wags1974
A true technician will jack your vehicle up two ways to inspect it properly, once by the frame and once by the suspension. This takes a good rack, usually an alignment rack.
There are alot of different suspensions out, and each need a technician who knows them all to distribute weight on jacks appropiately to isolate components and find faults.
Anyhow If I find any play in the wheel bearings when I have the vehicle properly jacked up, I will prewarn a customer of a coming wheel bearing failure, sometimes there is no play and I hear it audibly in my six mike test drive audio system. Where I will velcro six different microphones on suspicious parts such as steering knuckle tie rods , trans, brake calipers etc..
Sometimes the sound can be picked up in hz frequency meters using sound are a good way of isolating a component.
If your technician doesnt use these methods im sorry, alot of fellow techs dont have 120k+ amassed in diagnostic tools.
A ford contour typically doesnt need bearings at that mileage if its highway mileage, small town mileage (alot of turns, accelerates bearing wear). I replaced both my bearings on my toyota at 100k which is unheard of, but I usually only do small town driving which doesnt exactly distribute the force of my constantly turning vehicle evenly.
Hope this helps.