Roaring noise?

I have a 1999 Sephia, runs great - however lately I have noticed a kind of roaring coming from the rear of the car.

I cannot seem to find it's source.

Has anyone else on here heard of this? Or had this problem?

I have noticed that if I leave the car sit for short periods of time
(a couple of weeks) with the park brake applied, it takes alittle bit to get the brakes to release.


Any ideas?

Thanks