Weird humming noise from cars' behind

[Serpher]

I'm new to Golf, but I noticed that right behind a driver near back window there's a humming noise when I'm driving normally outside of the city. Is this how it should be with this car body or something's going on?

EDIT
I was at the dealers' workshop and did full checkup and suspension geometry and apparently that's fine.

 

[Strange Mud]

wheel bearing or tire noise?

 

[Serpher]

More like wind noise from the back. In this part. I can't hear it on the right side.

 

[Strange Mud]

1. look at hatch gaskets
2. remove spare look for water (see #4)
3. crawl in back and have someone else drive so you can listen
4. crawl in back and have someone spray with hose look for water leaks

Mud

 

[Serpher]

2. remove spare look for water (see #4)

What do you mean by that? Can you elaborate?

4. crawl in back and have someone spray with hose look for water leaks

I don't think it's a water leak, because I washed many times with a pressure washer.
I can hear it on rainless day going above 70 kmph / 45 mph.

 

[Strange Mud]

look in spare tire well for water. There have been issues with gaskets leaking. water coming in and wind noise can be different symptoms of the same problem

I had an Integra that would whistle when I went over 90 mph....I knew I couldn't take it to the dealer with that problem. I found out if it poured I would get water in the front....it ended up being a defective front windshield gasket.

 

[Serpher]

There's no water there. Everything's dry.
Also I was checking shock absorbers. I noticed that on back left damper there's a crack at the bottom (at least it looks like it). Maybe this could be the issue.

 

[Strange Mud]

spray with WD-40 see if sound changes

 

[Serpher]

I got it recorded and I assume it is a wheel bearing but I'm not sure.
Short audio:
https://drive.google.com/file/d/15MsgNEJvFlQlrgZKTEZZodzSPI0L81uC/view

 

[scrllock]

@mrmatto

 

[Strange Mud]

^^good thinking but I thought that was MK8 and possible aluminum suspension bits

 

[mrmatto]

That def sounds like a bad wheel bearing or cupped tire. Does the noise change when you turn left or right? Does the noise change if you rotate the tires front to back?

 

[Strange Mud]

That def sounds like a bad wheel bearing or cupped tire. Does the noise change when you turn left or right? Does the noise change if you rotate the tires front to back?

also: step 3 from my earlier post.

 

[Serpher]

That def sounds like a bad wheel bearing or cupped tire. Does the noise change when you turn left or right? Does the noise change if you rotate the tires front to back?

Yeah I just saw a test for wheel bearings on YT and those sharp turns. I'll try it after the weekend and report back.

 

[BudgetPhoenix]

It does kind of sound like a bad wheel bearing but sounds often don't translate through phone recordings well. Does the wheel feel really hot after a long drive?