Rumbling sound - getting worse

[jon.kimball]

Our 2019 CX-9 has gotten noisy. We have 128k km (80k miles?). It sounds like one driving over a metal grate bridge - waaaaaahnnn. The faster you go, the louder it gets. The transmission gear has no effect on the sound, even in Neutral (at speed)sound is still there. However: if you nudge the wheel left - just a touch - the sound goes away. So you can wahn, nudge, wahn, nudge to get a bit of relief. TIres are Pirelli Scorpion AS3 Plus with less than 10k km on them, stock size 255/r50-20. All pressures at 34 cold. No sing of premature wear.

Any ideas?

 

[youri]

Wheel bearing maybe ?

 

[paris1]

Brakes? BTW "Waaahhnn" isn't terribly helpful.

 

[rowlands57]

Wheel bearing. Likely the right side since the slight turning motion unloads the bearing briefly. Time to get it replaced for sure if you can hear it that clearly.

 

[jon.kimball]

Brakes? BTW "Waaahhnn" isn't terribly helpful.

"It sounds like one driving over a metal grate bridge". IFYKYK

 

[jon.kimball]

Thanks folks, booked for a wheel bearing check on Tuesday. Parked for now, it is definitely getting louder - even my wife can hear it now