Bismillah.
Few days ago, my nouvo had a rough sound from rear section. I also can felt abnormal vibration.
I suspect the real wheel bearing had worn out.
So I decide to replace the wheel bearing. Instead of replacing wheel bearing only, I'll change all bearing inside gearbox as well.
The bearings code as per picture below. I choose bearing with C3 clearance, NTN brand and of course Made In Japan.
It felt a lot smoother now after replaced all the bearings.
By the way, it's good to replace wheel shaft oil seal together with wheel bearing. Oil seal measurement as below.