There is a humming noise in the front of my car, gets louder when I drive faster

It sounds like you may have some possible tire or bearing noise starting. I would suggest bring it in and have us determine what is causing your noise.

There are a couple things that would make a hum/rumble, depending on what you are describing as a hum/rumble. For a rumble, rub your hand around the tread of the tires and see if the individual treads feel uneven. This is called cupping and will sound like a truck on mud tires going down the road. The other case is wheel bearings. The tire, when off the ground, should not have any play (movement) when you try to wiggle it holding the top and bottom of the tire. Wiggling it side to side will give you a false read for the wheel bearing.