Brake Rotor Screws - ML500
Thread Starter
Senior Member
Joined: Aug 2017
Posts: 396
Likes: 11
From: Ontario, Canada
2006 ML500, 2008 ML350
Brake Rotor Screws - ML500
Are these a must? I had to literally chip one off on the front left rotor. It was rust welded. Now I cannot replace the screw as the hole on hub is totally ruined. As the lug bolts ultimately hold the rotor in place, I was thinking I just go without one on this rotor.
Any thoughts will be appreciated.
Any thoughts will be appreciated.
Thread Starter
Senior Member
Joined: Aug 2017
Posts: 396
Likes: 11
From: Ontario, Canada
2006 ML500, 2008 ML350
Thread Starter
Senior Member
Joined: Aug 2017
Posts: 396
Likes: 11
From: Ontario, Canada
2006 ML500, 2008 ML350
Super Member
Joined: Nov 2019
Posts: 648
Likes: 144
From: Yeast Coast, Canada
GL550 X164
have you tried heat? Usually my go-to for broken bolts when I try to back them out. You are the one who makes the decision and my post is not a recommendation. Personally I would not worry about the retaining screw. The lug bolts are doing the real work keeping things together and in place.
Thread Starter
Senior Member
Joined: Aug 2017
Posts: 396
Likes: 11
From: Ontario, Canada
2006 ML500, 2008 ML350
have you tried heat? Usually my go-to for broken bolts when I try to back them out. You are the one who makes the decision and my post is not a recommendation. Personally I would not worry about the retaining screw. The lug bolts are doing the real work keeping things together and in place.
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MBWorld Fanatic!
Joined: Sep 2005
Posts: 6,191
Likes: 242
From: Albuquerque
'10 CL550, '12 GL550
When you tighten that little screw, the holes in the rotor hub are centered over the threaded holes in the wheel hub. Both the hole in the rotor and the screw head contact surface are tapered. There is no reason to assume the same thing occurs when you tighten lug bolts, as nothing about that process moves the rotor … or moves it with accuracy.
it’s only wishful thinking to consider the notion there exist non necessary parts.
In fact, Mercedes specifies the screw be replaced with a new one every time it’s removed. That’s because it is provided with preapplied thread locking compound. That’s a clue it shouldn’t loosen … or be omitted.
it’s only wishful thinking to consider the notion there exist non necessary parts.
In fact, Mercedes specifies the screw be replaced with a new one every time it’s removed. That’s because it is provided with preapplied thread locking compound. That’s a clue it shouldn’t loosen … or be omitted.
Last edited by lkchris; Mar 20, 2022 at 10:46 PM.
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