There is a humming noise on my drivers side usually starts when I hit 40km. Gets a bit louder when I turn. Is this bearings or steering?

 

could be a bad tire also. rotate that tire to the rear right and see if it goes away.

 

Hum to me would be wheel bearing if it was a high pitch whine i would say steering, at least those have been what i have experienced in the past

 

had same problem, changed bearings, noise went away.

 

One way to check which bearing (if that is indeed the problem) is to get going around 25 -35 mph (40-56 km/h) and turn to both sides. If the noise gets quieter or stops when you turn to the left but gets louder when you turn right, it's your drivers side bearing. As well, turning right and the noise gets quieter means passenger side.