I-Miev 2012, rear noise rumble

[adam]

I am trying to identify the source of this rear noise rumble on my I-Miev 2012.
Any one had this issue yet?

 

[kiev]

From the sound testing appears to track with speed, and from the manual spin test with wheels off the ground it occurs at the same clocking position of the wheel--so i suspect an issue with the ball bearings in the left side CV joint. Check if one of the boots are cracked and let dirt or water mix into the nasty CV grease.

 

[adam]

It is hard to access the inner cv joint, but the boots looks good so far.

 

[adam]

The conclusion on this rear noise issue:

Over 4 month, the rear left lug nut had started to loosen. There was rust between the rim and the hub.
After removing the rust and tighten the lug nuts, the noise is gone....

 

[WReed82]

Am glad you figured this out, and thanks for posting what you found!

 

[Eirik]

The conclusion on this rear noise issue:

Over 4 month, the rear left lug nut had started to loosen. There was rust between the rim and the hub.
After removing the rust and tighten the lug nuts, the noise is gone....

Hm, what is a lug nut? (Non-english speaker here

 

[jray3]

@Eirik, the lug nuts fasten the wheel to the hub, brake drum, or brake rotor. Some cars like aircooled Volkswagens used lug bolts instead of nuts that thread onto permanent studs. I'm surprised that Adam got four months out of the creaky wheel. I've had a wheel go from creaky to nearly falling off within a couple of days!

 

[Eirik]

Aha, the wheel nuts! I was confused by the missing "s" in the plural. So I thought it might be a single central nut which tightens the wheel bearing or something. (Which might not exist on these cars, I have never removed a brake drum.) Thanks again!

 

[jray3]

Anytime Eirik- I've been calling the central nut holding on a brake drum or hub the Axle Nut or a Spindle Nut. Of course wheel nuts would make more sense than lugs, but we're talking about English here....

 

[kiev]

The difference is that a lug nut is removed with a lug wrench, whereas a wheel nut is removed with a wheel brace.