trying to determine if I have a failing front wheel bearing. Truck has 150K miles anffor about the last 1000 miles I've noticed a buzzing in the floor board around 35 MPH. all quiet at other speeds. I have a 40 mile commute (each way) and it's almost all highway. So I am rarely at that speed. My thought is to keep driving until it's more noticeable (at more speeds). Any advice on how to tell what side is the problem? Replacing the hub looks pretty simple but at $150 per hub I'd like to be sure I've got the correct side.

Thanks in advance for any advice

 

I would try to get it on a jack/ jack stands to get the front tire/s suspended. Should be able to spin wheel, possibly hear noise. Might be able to feel play in the bearing hub.

I previously had a 2007 F150, King Ranch 4X4, that needed to be replaced.

It didn't give any warning at all. Went to leave from work one evening after my shift, & noticed a grinding when turning out of site. The brakes were about the only thing holding the tire from falling off. Turned around, & pulled back into parking spot, & changed it out right there, once getting the parts I needed. If I would have attempted to drive it home, (30 kilometer drive) I probably would have had to replace the brake pads, & rotor, & likely would have done more damage.

 

I've always been able to feel bad bearings by grabbing the tire at 12 and 6 o clock positions and shaking, if the ear test for growling was suspect. If the truck is 4x4, you'd need the engine running to unlock the hubs to be able to spin the tire, so it would be hard to listen for a bearing unless you applied vacuum using an external source.