Hey guys, I have noticed my truck making a humming/buzzing sound when I'm off throttle and slowing down. Initial fluid checks look fine, but that doesn't really mean anything, has anyone experienced something like this? It sounds like I'm running super swampers is how I would describe the sound.

 

What tires do you have them now? Do they have any uneven wear cupping. If you run your hand over the tires does it feel smooth or uneven.

 

Front tires are feathered

 

Check the PCV valve. That is if we are talking about a noise from the motor.