Possible wheel bearing issue..

Hi Everyone! I just bought a 2000 Honda Accord coupe 5spd. It has about 129k on it. When I bought it I knew it needed the timing belt done so I had a local shop do that and they also found the right rear wheel bearing needing replacement. I figured that b/c it was humming was I was going down the road. After they replaced it, the noise went away.

WELL, this weekend I decided to rotate my tires. The tires in the front were brand new and the tires on the back were worn down pretty good. So I put the rear old ones up front and the new good ones in the back so they would last a bit longer till I got some new tires.

I'll be damned in the noise came back again...more humming. I don't start to hear it until about 40mph or higher, and it seems to decrease in noise level when I take right turns at speed.

Any ideas???

Thanks,
Cris P.