I have replaced 4 bearings 2 driver, 2 pass. Common if you corner hard. With car on jack, grab wheel at 3 and 9 o'clock. If you can move the wheel more than 1/2 inch, you need a bearing. I've used aftermarket bearings and have noticed they last about the same mileage as Motorcraft and are 2/3 the price.
Good luck!

Greg 98 Contour SE Sport V-6/5 speed RAZOR shifter, custom console, custom grill Firestone FTX 225/60 R15 V rated