Hum noise at 50+mph

[Penguin VII]

Hey guys, I hope I'm not double posting but I couldn't find anything about this via search.

 

I replaced my rotors and pads on the front late last year before the snow hit. I'd noticed after a bit that I was starting to get a "humming" noise from the front at 50+ mph. I can hear it and very lightly feel it in the gas pedal (so I think, could be my mind). It sounds like this (best try):

• 2.5-3 seconds nothing
• 2.5-3 seconds humming
• 2.5-3 seconds nothing
• 2.5-3 seconds humming

 

It sort of feels like something is dragging/rubbing. I'll drive on the highway for an hour and then get out and touch the brakes to see if the rotors are hot, and don't notice anything. There doesn't seem to be an issue with the pads wearing, and I used quality parts here, EDC green stuff and EDC slotted rotors.

 

A few questions:

• I made the assumption that this was related to the brake-pad/rotor swap since that's when I noticed it. If the rotors aren't hot and the pads look ok what else could it be there?
• Could this noise be coming from the slotted rotors? If so why isn't it a constant hum?
• What else could be giving this humming?
• Could this be related to my lift?
• Wheel bearings on the way out?

 

Some things about my truck:

• 1500 4x4 (electric switch)
• 6" BDS lift
• 35" toyo rt tires

 

[Lsgun1]

Are you sure its not the tires? Those are pretty aggressive. Run your hand over them to feel for cupping.

[Penguin VII]

24 minutes ago, Lsgun1 said:

Are you sure its not the tires? Those are pretty aggressive. Run your hand over them to feel for cupping.

I didn't even think about the tires. I just did but it's a little hard to tell since there is a fair amount of space between treads. I did look and it looks like there may be come cupping going on. I may need yet another alignment. Thanks man, I think that may be the issue.