Can overtightening your lug bolts warp your rotors?
Member
Joined: Feb 2007
Posts: 142
Likes: 5
From: Houston
2020 E450 Coupe, 2022 Porsche Macan, 2001 Porsche 911
This is great info! I had the same problem (warped rotors) on my former Volvo, and it was a result of over-tightning.
Now, question is...can anyone tell me what the torque setting is supposed to be for 2003 stock W211 wheels? I'm about to tackle my first brake job and want to get it right...
Many thanks!
Now, question is...can anyone tell me what the torque setting is supposed to be for 2003 stock W211 wheels? I'm about to tackle my first brake job and want to get it right...
Many thanks!
Thread Starter
MBWorld Fanatic!
Joined: Apr 2006
Posts: 8,137
Likes: 26
From: Maryland
Eurocharged 2004 E500, Eurocharged ECU/TCU 2005 SL600, 2010 Caddy SwaggerWagon
This is great info! I had the same problem (warped rotors) on my former Volvo, and it was a result of over-tightning.
Now, question is...can anyone tell me what the torque setting is supposed to be for 2003 stock W211 wheels? I'm about to tackle my first brake job and want to get it right...
Many thanks!
Now, question is...can anyone tell me what the torque setting is supposed to be for 2003 stock W211 wheels? I'm about to tackle my first brake job and want to get it right...
Many thanks!
I believe it's ~90 ft-lbs. That's what I had them torque mine down to this last time and they didn't scoff at it. You could probably pull your manual and check but I think that's right.
Super Member
Joined: May 2006
Posts: 513
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From: San Diego, CA
2020 GLE350
I know, I know, another smartass from So Cal...... I do consider myself lucky I dont have to go through that though.
Interesting post, I will need to get a torque wrench now....
Out Of Control!!
Joined: Nov 2005
Posts: 18,677
Likes: 9
From: OC
a quarter mile at a time
Well guys,
I went and purchased a 150 ft-lb 1/2" torque wrench and now I'm pissed!
First thing I did was check 4 or 5 random lug bolts and found that all of them were torqued past 140 ft-lb and a few of them were torqued beyond 150 ft-lbs!
I had to buy a 4 ft steel pipe and slip it over the lug wrench to break these things loose. Got the first wheel done and moved on to the second. Well, I couldn't even get 1 lug loose! And get this, I ended up bending the damn lug wrench. INSANE! I had to bend the thing back into shape and start over. Well, now the metal has weakened and just keeps bending when I try to loosen the bolts.
So, I go grab another lug wrench out of my R500 and guess what? Yep, bent that one too! WTF!
Now, I'm furious. I have no doubt that this is the reason I'm going through rotors. I don't own any pneumatic tools so now I'm stuck. I guess I'll have to call roadside assistance and have them break these things loose for me.
JESUS!
I went and purchased a 150 ft-lb 1/2" torque wrench and now I'm pissed!
First thing I did was check 4 or 5 random lug bolts and found that all of them were torqued past 140 ft-lb and a few of them were torqued beyond 150 ft-lbs!
I had to buy a 4 ft steel pipe and slip it over the lug wrench to break these things loose. Got the first wheel done and moved on to the second. Well, I couldn't even get 1 lug loose! And get this, I ended up bending the damn lug wrench. INSANE! I had to bend the thing back into shape and start over. Well, now the metal has weakened and just keeps bending when I try to loosen the bolts.
So, I go grab another lug wrench out of my R500 and guess what? Yep, bent that one too! WTF!
Now, I'm furious. I have no doubt that this is the reason I'm going through rotors. I don't own any pneumatic tools so now I'm stuck. I guess I'll have to call roadside assistance and have them break these things loose for me.
JESUS!
