W212: 2009 e350cdi What is the correct torque for my wheel nuts ?

anyweb

Senior Member
Joined
Jul 15, 2005
Messages
2,980
Reaction score
225
Age
54
Location
Sweden
Website
www.niallbrady.com
Your Mercedes
c238,w120 (diesel)
hi after viewing this video on youtube about what happens when the wheel nuts are tightened too much, so I decided to double check the torgue on my wheel nuts,

i've done a quick google and found the value should be 130nm, is that correct ? what if the nuts have been over tightened before, which is quite likely, should i purchase replacements (new) and if so what are the correct size/dimension that i should purchase

thanks in advance for your help and advice on this, i want to make sure my 4 wheels are in a safe state when driving down to the south of France in June.
 

John Laidlaw

Senior Member
Joined
Nov 15, 2013
Messages
26,377
Reaction score
9,037
Location
Wirral
Your Mercedes
BMW 530d X Drive Tourer M Sports
That’s correct- if you find them tighter I would just retorque and not worry too much
 

Ken_R

Senior Member
Joined
Dec 11, 2015
Messages
691
Reaction score
201
Location
Worcestershire, UK
Your Mercedes
W203 2006 C230 Estate
If I were driving down to the south of France then I would be ensuring that I could release the bolts in the event of a puncture. I don't rely upon the supplied brace. I carry a 17mm socket and an 18" Breaker Bar.

You are right to be concerned, but not overly so. Back in the 1970's/80's, the Institute of Road Transport Engineers, with University assistance, researched wheel losses on HGVs (LGVs). Their final findings were published in a document entitled "The Lost Wheels Mystery."

Whilst it now appears that the original publication is no longer available, there seems to be comparable information at http://www.transportengineer.org.uk/transport-engineer-features/rolling-down-the-road/21770

Edited to add that it is common practice for HGV's to have wheels re-torqued after 50 km or after 1 hour of non-use.
 

John Laidlaw

Senior Member
Joined
Nov 15, 2013
Messages
26,377
Reaction score
9,037
Location
Wirral
Your Mercedes
BMW 530d X Drive Tourer M Sports
I always retorque mine after a day following any wheel work which was not my own....
 
OP
anyweb

anyweb

Senior Member
Joined
Jul 15, 2005
Messages
2,980
Reaction score
225
Age
54
Location
Sweden
Website
www.niallbrady.com
Your Mercedes
c238,w120 (diesel)
  • Thread Starter
  • Thread starter
  • #5
If I were driving down to the south of France then I would be ensuring that I could release the bolts in the event of a puncture. I don't rely upon the supplied brace. I carry a 17mm socket and an 18" Breaker Bar..

I also don't rely on the included brace and bring my own tool like this one

2000017056.jpg
 

WE HAVE NOW MOVED: 8 Hazel Road, Woolston, SO19 7GB
Service, Repairs and remapping service
Any queries, please do not hesitate to contactEmail@mbsofsouthampton.co.ukor alternatively you can phone Colin or Dave on 02380 445820, out of hours numbers are 07787913313 or 07907631681.
Top Bottom