Brake Judder when NOT braking

Rungles

Active Member
Joined
Feb 3, 2015
Messages
146
Location
Isle of Wight
Car
C230K W202
After about 5 miles or so of driving, I'm getting a judder from the NS rear wheel which sounds as though the wheel is about to come off. Upon inspection the disc is red hot (as in glowing). Once 'hot' it's there all the time, whether driving or braking. I'm all set to buy new discs and pads but wanted to check first in case I'm missing something.

My theory is that the disc is warped and is expanding as it gets hot, hence getting worse once I've driven a few miles.

Does anyone have any thoughts?

Cheers guys.

Scott
 
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Rungles

Active Member
Joined
Feb 3, 2015
Messages
146
Location
Isle of Wight
Car
C230K W202
Thank you! Just out of interest, why is it knocking so much? It sounds as though someone is trying to kick their way out of the boot!
 

trapperjohn

MB Enthusiast
Joined
Nov 19, 2008
Messages
7,305
Location
Lancashire
Car
124 300D 24V Estate
Heat from brakes has melted grease in bearing?
 

Bellow

MB Enthusiast
Joined
Apr 26, 2010
Messages
6,461
Location
Ecosse.
Car
C2500 350, 450
Heat from brakes has melted grease in bearing?
And take care that the (melted, running) grease doesn't end up in contact with the red hot disc and start a fire - wouldn't be the first time...
 

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