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2012 Mercedes - wheel bolts instead of studs #4894137
10/11/18 05:18 PM
10/11/18 05:18 PM
Joined: Jul 2014
Posts: 1,027
Winnipeg MB CA
Number_35 Offline OP
Number_35  Offline OP
Joined: Jul 2014
Posts: 1,027
Winnipeg MB CA
Earlier today I installed the winter tires (mounted on alloys) on a friend's 2012 Mercedes C300. It was interesting to see that this car uses bolts into threaded holes in the hubs to hold the wheels on, rather than the much more common studs and lug nuts. I saw this on a few Mazdas back in the '70s, but had not seen it since. It makes installing the wheels a bit of a challenge.

Is this standard for Mercedes? Any other manufacturers? What are the advantages?

Re: 2012 Mercedes - wheel bolts instead of studs [Re: Number_35] #4894140
10/11/18 05:24 PM
10/11/18 05:24 PM
Joined: Jan 2010
Posts: 713
Los Gatos, CA
JeffKeryk Online content
JeffKeryk  Online Content
Joined: Jan 2010
Posts: 713
Los Gatos, CA
VW's used wheel bolts instead of studs.

Re: 2012 Mercedes - wheel bolts instead of studs [Re: Number_35] #4894141
10/11/18 05:26 PM
10/11/18 05:26 PM
Joined: Oct 2002
Posts: 36,615
Great Lakes
Quattro Pete Offline
Quattro Pete  Offline
Joined: Oct 2002
Posts: 36,615
Great Lakes
It's standard for most of the German makes, AFAIK.


'02 530i (Edge 0W-40)
'15 Q5 3.0T (Edge 5W-40)
'18 Charger SRT (PUP 0W-40 SRT)
Re: 2012 Mercedes - wheel bolts instead of studs [Re: Number_35] #4894163
10/11/18 05:46 PM
10/11/18 05:46 PM
Joined: Apr 2017
Posts: 1,031
Ohio
hallstevenson Online content
hallstevenson  Online Content
Joined: Apr 2017
Posts: 1,031
Ohio
A co-worker has a '17 VW Tiguan and it uses bolts too. It sucks compared to studs. At least with studs you can kinda hook/hang the wheel while lining things up.

Re: 2012 Mercedes - wheel bolts instead of studs [Re: Number_35] #4894165
10/11/18 05:50 PM
10/11/18 05:50 PM
Joined: Mar 2013
Posts: 5,031
The Midwest
skyactiv Offline
skyactiv  Offline
Joined: Mar 2013
Posts: 5,031
The Midwest
Yes on it being a German thing. Both cars in my signature use wheel bolts. Mercedes Sprinter vans also use wheel bolts.

Using lug bolts also gives you more variation in terms of the wheels and offsets you can use. You can use longer bolts and spacers for different wheel offsets.


Wife: 15' Audi A4 quattro 6 speed manual
Me: 13' VW GTI 3 door 6 speed manual
Wanted: 2019 Ford Ranger
Re: 2012 Mercedes - wheel bolts instead of studs [Re: Number_35] #4894166
10/11/18 05:51 PM
10/11/18 05:51 PM
Joined: Nov 2011
Posts: 1,240
Lyndhurst NJ
Audios Offline
Audios  Offline
Joined: Nov 2011
Posts: 1,240
Lyndhurst NJ
BMW has had it since the 80s, All european cars have had it since I started working on cars in 2001.


2002 VW Golf TDI-Mobil 1 5/40 TDT
2007 Mercedes GL320 CDI Fuchs 5/40 GT Pro XTL
2005 BMW M3 BMW Twin Power 10/60
2003 BMW M5-Fuchs 5/40
1998 BMW M3/4/5 Fuchs 5/40
Re: 2012 Mercedes - wheel bolts instead of studs [Re: Number_35] #4894168
10/11/18 05:54 PM
10/11/18 05:54 PM
Joined: Feb 2016
Posts: 169
NY
fcjeep Offline
fcjeep  Offline
Joined: Feb 2016
Posts: 169
NY

My wife's 2014 Jeep Cherokee had the same set up. Yes it's a little bit of a PITA to put the wheel back on.
I don't know yet about her 2016 Grand Cherokee as I haven't pulled a wheel yet.


2006 Jeep GC 4.7L, Died @ 153059 mi frown
2008 Xterra 4.0L, 104500 mi
2016 Jeep GC 3.6L, 19100 mi
2017 Benz C300 14000 mi
Re: 2012 Mercedes - wheel bolts instead of studs [Re: Number_35] #4894180
10/11/18 06:12 PM
10/11/18 06:12 PM
Joined: Oct 2007
Posts: 405
Ga
DB_Cooper Offline
DB_Cooper  Offline
Joined: Oct 2007
Posts: 405
Ga
In the tool kit on most German cars is supposed to the a threaded "Wheel Hanger", check you owners manual. Some are plastic and others steel. If you know the metric thread size you can order one from Amazon for about $10. Available in 12x1.5 14x1.25 etc. Makes the job much easier.

Steel wheel hanger $10


Last edited by DB_Cooper; 10/11/18 06:14 PM.
Re: 2012 Mercedes - wheel bolts instead of studs [Re: Quattro Pete] #4894184
10/11/18 06:15 PM
10/11/18 06:15 PM
Joined: Sep 2009
Posts: 16,183
OH
fdcg27 Offline
fdcg27  Offline
Joined: Sep 2009
Posts: 16,183
OH
Originally Posted by Quattro Pete
It's standard for most of the German makes, AFAIK.


Like QP said. Every German car I've owned had lug bolts rather than studs and nuts.
Every car also had some sort of helper included in the original tool kit from which you could hang the wheel while threading in a couple of the bolts.
Not sure why this particular design was used, but I'm sure that Trav will be along to give us the reason.


18 Accord Hybrid FF
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09 Forester 95K M1HM 10W-30
01 Focus ZX3 118K PP 5W-20
96 Accord LX 104K T5 10W-30
95 318i
Re: 2012 Mercedes - wheel bolts instead of studs [Re: Number_35] #4894191
10/11/18 06:20 PM
10/11/18 06:20 PM
Joined: Nov 2006
Posts: 20,570
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,570
MA, Mittelfranken.de
Originally Posted by Number_35
Earlier today I installed the winter tires (mounted on alloys) on a friend's 2012 Mercedes C300. It was interesting to see that this car uses bolts into threaded holes in the hubs to hold the wheels on, rather than the much more common studs and lug nuts. I saw this on a few Mazdas back in the '70s, but had not seen it since. It makes installing the wheels a bit of a challenge.

Is this standard for Mercedes? Any other manufacturers? What are the advantages?


Just use a hanging stud, you can but one or just cut a bolt, its a non issue. One advantage is you don't need to remove the caliper bracket to swap the rotor just remove one caliper pin bolt and flip it up.
Another reason is in Europe most drivers have aluminum wheels for the summer and steel for the winter, they use different length bolts.

https://www.amazon.com/Steel-Wheel-Hanger-Automotive-Volkswagen/dp/B00MWAQGSQ


ASE L1, Master. Deutsch Meisterbrief.
Re: 2012 Mercedes - wheel bolts instead of studs [Re: Number_35] #4894192
10/11/18 06:21 PM
10/11/18 06:21 PM
Joined: Dec 2014
Posts: 259
Huntington WV
dbias Offline
dbias  Offline
Joined: Dec 2014
Posts: 259
Huntington WV
My VW and Audi have them and it just takes a little getting used to. There is a dowel type thing in my tire change kit that you can stick in a hole to help line up but I've never used it. Being hub centric the wheels fit snug to the hub so I just jam it up there and spin to line up the holes. On the audi wheels there is a slight indentation on the backside that makes a slight rust mark where water gets into the indentation and makes a distinctive mark on the rotor surface where the wheel snugs up to so once I have the wheel on the hub I just spin the wheel until the rust mark lines up with the indentation and presto bolts drop right in.


2011 VW JETTA Castrol Edge 0W-40
2012 FORD TRANSIT CONNECT Castrol Edge 5W-20
2016 HONDA CIVIC COUPE Frankenbrew 0W-20 to 5w-40
2017 AUDI A4 Castrol Edge 0W-40
Re: 2012 Mercedes - wheel bolts instead of studs [Re: Number_35] #4894212
10/11/18 06:43 PM
10/11/18 06:43 PM
Joined: Feb 2009
Posts: 8,806
Texas
440Magnum Offline
440Magnum  Offline
Joined: Feb 2009
Posts: 8,806
Texas
The last car I had with lug bolts was my 1949 Plymouth. I've seen it more recently on light-duty trailer axles.


'66 Dodge Polara & '69 Dodge Coronet R/T both 440/727
'08 Ram 1500 4.7/545RFE
'12 Challenger SRT8 392/6-speed
'99 XJ 4x4 4.0/AX15, '14 WK2 4x4 3.6/8HP
Re: 2012 Mercedes - wheel bolts instead of studs [Re: DB_Cooper] #4894230
10/11/18 07:02 PM
10/11/18 07:02 PM
Joined: Jul 2014
Posts: 1,027
Winnipeg MB CA
Number_35 Offline OP
Number_35  Offline OP
Joined: Jul 2014
Posts: 1,027
Winnipeg MB CA
Originally Posted by DB_Cooper
In the tool kit on most German cars is supposed to the a threaded "Wheel Hanger", check you owners manual. Some are plastic and others steel. If you know the metric thread size you can order one from Amazon for about $10. Available in 12x1.5 14x1.25 etc. Makes the job much easier.

Steel wheel hanger $10


Thanks all for the feedback. I bet there was something there, but I didn't think to look for it. (If you don't know a thing exists, you don't look for it.)

Another interesting thing was that the car came with one anti-theft bolt per wheel (plus four normal hex-head bolts per wheel). Each anti-theft bolt had a very complex pattern (which was the same for all four anti-theft bolts), and there was a matching male key. I was worried that I wouldn't get the anti-theft bolts off, but they weren't too bad. Some of the other bolts were on way too tight; I guess having to use a key prevented the last shop from torquing the anti-theft bolt down as hard as the others.

Re: 2012 Mercedes - wheel bolts instead of studs [Re: hallstevenson] #4894250
10/11/18 07:34 PM
10/11/18 07:34 PM
Joined: Oct 2002
Posts: 36,615
Great Lakes
Quattro Pete Offline
Quattro Pete  Offline
Joined: Oct 2002
Posts: 36,615
Great Lakes
Originally Posted by hallstevenson
A co-worker has a '17 VW Tiguan and it uses bolts too. It sucks compared to studs.

When they corrode and rust away, what's cheaper and easier to replace: studs or bolts?


'02 530i (Edge 0W-40)
'15 Q5 3.0T (Edge 5W-40)
'18 Charger SRT (PUP 0W-40 SRT)
Re: 2012 Mercedes - wheel bolts instead of studs [Re: Number_35] #4894255
10/11/18 07:37 PM
10/11/18 07:37 PM
Joined: Nov 2006
Posts: 20,570
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 20,570
MA, Mittelfranken.de
I wonder how many people remember left hand thread studs and lug nuts on one side of Chrysler and GM vehicles.


ASE L1, Master. Deutsch Meisterbrief.
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