Tire noise at 100KMH

[BonesOfSteel]

I am getting a loud hum from the rear of my car when I go over 80km and 100KM seems to be a loudest. I figured my all seasons were just getting old and just ignored it. I just put some Winter tires on my car last week and I am still getting the same exact sound. You don't hear it at all until you hit about 80 and when i let go of the gas and go below 80km it goes away. I don't think it would be a bearing because I would here it all the time right? My tire pressure is good, nothing is rubbing. What do you guys think this could be before I get the mechanic to find it for me and charge me a fortune! Thanks for your help!

[m3outtanowhere]

Guibo.
Bushings?

[BonesOfSteel]

my rear subframe bushings?? I guess I will have to just get them to check it out. I just hope they find it fast so I don't spend half the cost on finding the problem!

[mooseheadm5]

Bearing most likely if it is speed related. Bearing noise will get louder with speed and will get louder with time. Bushings do not cause speed related noise usually. Guiobo usually causes a low-speed related vibration (high torque low speed.)
-Paul

[BonesOfSteel]

I don't have any vibration just when I get up around 80KM it starts to hum a lot and get louder the faster I go. When I let off the gas it goes away so bearing sounds like the problem.