Hi all
My 2006 Civic suddenly developed this sound yesterday. I first noticed it as I drove out from home onto PIE and thought that there was a motorbike following behind me (engine humming noise). After a while I realized that thre was no bike and that the sound sound seemed to be coming from the rear of the car. It would get louder when I went faster and fade away when I slowed down. Only more noticeable over 60+ km/h. Doesn't change pitch when I change gears or rev in neutral, so not exhaust related. I read that it could be wheel bearings, if so, how long can I drive around with it? My regular mechanic only opens on 7 Feb Thx