"Bearing" problem about my car's rear wheel

[TheProsecutor]

About 2 months ago my car began making a humming noise from my carriage in the back near my wheels everytime I got over 50kph. Shortly after it started doing that I took it to the dealership for an anual tenken (point check/tune-up).

I told the mechanic about it and he told me it was a bearing problem in the wheel. He said I would have to make an appointment to get it fixed and I would have to leave it there for several hours for them to fix it. Well, I was in a hurry to get out of there so I really didn't go into asking a few other questions I maybe should have. Anyway, I still haven't gotten around to getting it fixed.

My question is, could not getting it fixed for a long time do any serious damage to the car? -- or is it just an annoying sound that is the problem and nothing more and I can put it off indefinitely?

[Tanimaga]

Eventually the bearing can seize and stop turning all together. Did the mechanic test drive or look at the vehicle after you told him about the problem?
Best to get it fixed.. assuming it is the bearing. What make/model vehicle is it??

[DoctorP]

Being that your car is probably newer than most military members (meaning less than 8 years old) you probably would be fine for while. Replacing the bearing isn't that hard though...something you could do yourself.

[Tanimaga]

Ease of replacement depends of vehicle. Most wheel bearings must be pressed out, sometimes requiring a larger than standard hydraulic press, or cutting off the bearing race off the driveshaft.
Also, a loose bearing can severly reduce the life of brakes linings or calipers. Seals and bushings can also be destroyed because of heat generated. Longer you wait, the possibility of higher $$.

[kombu_kid]

You didn't mention if your car is front wheel drive, but I'm guessing it is. Most are, nowadays. I've seen a lot of cars (mine included) go for actually years with a noisy "howling" bearing. On front wheel drive (FWD) cars, the rear wheels don't have any turning/torquing going on, and they also support a lot less weight back there too. That's not to say I'd just ignore it. How about tear into yourself? You may not need a hydraulic press. Just get a manual for your car, if you're so inclined. Also, I've seen worn tires give off the same sound as a worn bearing too, just FYI.