Rims / lug bolts / W126 vs R129 q's - Mercedes-Benz Forum
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 24 (permalink) Old 05-24-2019, 06:13 PM Thread Starter
BenzWorld Extremist
 
isthenew's Avatar
 
Date registered: Jan 2014
Vehicle: 1989 300SE 232k miles
Location: Sarasota, Florida
Posts: 973
Mentioned: 4 Post(s)
Quoted: 219 Post(s)
(Thread Starter)
Rims / lug bolts / W126 vs R129 q's

Hello All,

This regards my new to me 1989 300SE with 231k miles. In the course of restoration I discovered a snafu with the tires. I thought I had 4 like-new tires on the car. However, I have 3. One of the 4 tires mounted is bald. I went into the trunk and found the 4th like-new tire was there as the spare; only it has a huge, 6-inch gash in the sidewall.

And while there are those that will say, "My god! How did he buy a car without knowing this?" I paid a few hundred dollars for the car. So I didn't look to hard at every little thing. ...Actually, I didn't even start the car until I paid for it and was getting ready to drive it to the warehouse.

In any case, I came across a great deal on a set of used tires and chrome rims from a 1990 300SL. Having owned SL320's I didn't expect any real problems. I researched the tire and rim sizes between the cars. Everything seems to match up. But there were 2 potential problems: 1) Needing spacers on the front rims, and/or 2) Needing longer lug bolts.

Upon install, I found I literally couldn't install the rims. The lug bolts from my W126 are too short. They do not reach the backside of the rim; let alone screw into the wheel hub.

If I measured correctly, the W126 lug bolt has ~40mm shaft. I believe I need ~60mm.

I've had R129's with aluminum rims and with chrome rims (like these). The aluminum rims on my friend's R129 had the same, long, "flush mount" style as the W126 lug bolt. My chrome rims used lug bolts that were shorter, non-flush mount. My chrome R129 rims used the same shorter, non-flush mount lug bolts as my aluminum rims. In fact, my chrome rims were so similar to these, and it seemed everything was so interchangeable on the R129, I'm surprised by this problem.

Though I've read they're longer, I never noticed anything special about the R129 lug bolt. In my mind, I don't remember anything different from the W126's. In my research, I can't find a specific example or measurement for the R129 lug bolt.

So, is the R129 lug bolt longer? With a shaft of ~60mm? In which case those are a great solution. Because I have a source to buy those.

Thanks,
Bill
Attached Thumbnails
Click image for larger version

Name:	IMG_3423.jpg
Views:	5
Size:	72.1 KB
ID:	2515424   Click image for larger version

Name:	IMG_3426.jpg
Views:	6
Size:	74.0 KB
ID:	2515426  
isthenew is offline  
Sponsored Links
Advertisement
 
post #2 of 24 (permalink) Old 05-24-2019, 06:31 PM
BenzWorld Elite
 
GreenT's Avatar
 
Date registered: Mar 2013
Vehicle: 1995 S500 - 1986 420SEL
Location: Floriduh
Posts: 60,698
Mentioned: 25 Post(s)
Quoted: 10519 Post(s)
GreenT is offline  
post #3 of 24 (permalink) Old 05-24-2019, 07:17 PM Thread Starter
BenzWorld Extremist
 
isthenew's Avatar
 
Date registered: Jan 2014
Vehicle: 1989 300SE 232k miles
Location: Sarasota, Florida
Posts: 973
Mentioned: 4 Post(s)
Quoted: 219 Post(s)
(Thread Starter)
Ok. Great. That was confusing to me as both models (R129 and W126) have the same part listed. And I had the shorter, non-flush bolts on my aluminum R129 rims. And a ~40mm short shaft could have an overall length of 61mm.

I'll order me some of those bolts!
GreenT likes this.
isthenew is offline  
Sponsored Links
Advertisement
 
post #4 of 24 (permalink) Old 05-24-2019, 07:48 PM
BenzWorld Elite
 
GreenT's Avatar
 
Date registered: Mar 2013
Vehicle: 1995 S500 - 1986 420SEL
Location: Floriduh
Posts: 60,698
Mentioned: 25 Post(s)
Quoted: 10519 Post(s)
https://www.benzworld.org/forums/r12...-oem-et34.html


A few things you need to know...

Shank diameter for Mercedes is either 12mm or 14mm. R129s use 12mm. W126s use 14mm.

Shank length is measured from the base of the seat to end of lug. In your case it sounds like you need a 14X60mm.

Mercedes uses ball seats as opposed to conical seats. For safety reasons stick with the ball seat lugs.

Lastly, stay away from cheap brands/products. Contact these guys, they have the real deal and are experts on our cars always willing to help.


MBL87560SEC likes this.
GreenT is offline  
post #5 of 24 (permalink) Old 05-24-2019, 09:08 PM
BenzWorld Elite
 
mramay's Avatar
 
Date registered: Feb 2005
Vehicle: Two '87 570SECs, one '87 560SEL
Location: Las Vegas, NV
Posts: 4,412
Mentioned: 6 Post(s)
Quoted: 256 Post(s)
Oops, GreenT's wrong. W126's use 12mm lug bolts. 12x1.5's.

If the 40s are flush with the back of the rim, then 50s should do the trick. Also, to reiterate, the parking brake mechanism is inside the rear hub and pretty close to the bolt holes. Bolt the rim on the hub and, by hand, turn the rim 360 degrees to ensure the bolts don't hit the mechanism. BTDT, got the bills to show new parking brake parts!!

Blasphemous Mike
US '87 560SEC with Euro headlights, clear markers, H&Rs, 17x8.5/Nitto's, ATE slotted rotors with ceramic pads, BergWerks FGS, 3.07 Limited Slip. '87 560SEL with Euro Headlights, lowered, 235/40/17's
mramay is offline  
post #6 of 24 (permalink) Old 05-24-2019, 09:34 PM
BenzWorld Extremist
 
Doc Zinger's Avatar
 
Date registered: Dec 2014
Vehicle: 1990 560SEC, 129,00 miles, in good shape, starting to do some small mods-steering wheel, exhaust
Location: Seattle, WA
Posts: 829
Mentioned: 0 Post(s)
Quoted: 316 Post(s)
Garage
Quote:
Originally Posted by mramay View Post
Oops, GreenT's wrong. W126's use 12mm lug bolts. 12x1.5's.

If the 40s are flush with the back of the rim, then 50s should do the trick. Also, to reiterate, the parking brake mechanism is inside the rear hub and pretty close to the bolt holes. Bolt the rim on the hub and, by hand, turn the rim 360 degrees to ensure the bolts don't hit the mechanism. BTDT, got the bills to show new parking brake parts!!
Wrong wrong, OMG can't be, I can see why you have "Blasphemous Mike" in you byline after committing such an act.
Doc Zinger is offline  
post #7 of 24 (permalink) Old 05-24-2019, 09:40 PM
BenzWorld Senior Member
 
macdeity's Avatar
 
Date registered: Aug 2009
Vehicle: 1984 500SEC AMG Euro "Das Model"
Location: Orange County CA
Posts: 482
Mentioned: 2 Post(s)
Quoted: 77 Post(s)
I got some original R129 wheel bolts that I'm going to use to mount my OZ wheels on my SEC, some have a little rust, does anyone know how to refurbish these bolts, what paint can I use on them?

Just when I thought I was out...they pull me back in
macdeity is offline  
post #8 of 24 (permalink) Old 05-24-2019, 09:52 PM
BenzWorld Elite
 
mramay's Avatar
 
Date registered: Feb 2005
Vehicle: Two '87 570SECs, one '87 560SEL
Location: Las Vegas, NV
Posts: 4,412
Mentioned: 6 Post(s)
Quoted: 256 Post(s)
Quote:
Originally Posted by Doc Zinger View Post
Wrong wrong, OMG can't be, I can see why you have "Blasphemous Mike" in you byline after committing such an act.
Yep, I am the blasphemous one.
Attached Thumbnails
Click image for larger version

Name:	Wheel bolt thread width.jpg
Views:	5
Size:	54.2 KB
ID:	2515446  
GreenT likes this.

Blasphemous Mike
US '87 560SEC with Euro headlights, clear markers, H&Rs, 17x8.5/Nitto's, ATE slotted rotors with ceramic pads, BergWerks FGS, 3.07 Limited Slip. '87 560SEL with Euro Headlights, lowered, 235/40/17's
mramay is offline  
post #9 of 24 (permalink) Old 05-25-2019, 08:02 AM
BenzWorld Elite
 
GreenT's Avatar
 
Date registered: Mar 2013
Vehicle: 1995 S500 - 1986 420SEL
Location: Floriduh
Posts: 60,698
Mentioned: 25 Post(s)
Quoted: 10519 Post(s)
Quote:
Originally Posted by mramay View Post
Oops, GreenT's wrong. W126's use 12mm lug bolts. 12x1.5's.

See?... See what happens when you get senile after years of hard drug use?

So I got confused with the W140 S500. Shoot me and put me out of my misery, I beg of you...
mramay and isthenew like this.
GreenT is offline  
post #10 of 24 (permalink) Old 05-25-2019, 12:12 PM
BenzWorld Elite
 
mramay's Avatar
 
Date registered: Feb 2005
Vehicle: Two '87 570SECs, one '87 560SEL
Location: Las Vegas, NV
Posts: 4,412
Mentioned: 6 Post(s)
Quoted: 256 Post(s)
Quote:
Originally Posted by GreenT View Post
See?... See what happens when you get senile after years of hard drug use?

So I got confused with the W140 S500. Shoot me and put me out of my misery, I beg of you...
That's funny, that is. I made it to senile without external assistance!! Now I'm old enough to have a choice between Senior Moment or CRS (Can't Remember "Stuff").

CRS moment - can't remember who said it on here but "Sometimes it's just not worth the effort to chew through the restraints" is a truth.
GreenT and isthenew like this.

Blasphemous Mike
US '87 560SEC with Euro headlights, clear markers, H&Rs, 17x8.5/Nitto's, ATE slotted rotors with ceramic pads, BergWerks FGS, 3.07 Limited Slip. '87 560SEL with Euro Headlights, lowered, 235/40/17's
mramay is offline  
Sponsored Links
Advertisement
 
Reply

  Mercedes-Benz Forum > Mercedes-Benz Sedan Forums > W126 S,SE,SEC,SEL,SD,SDL Class

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Mercedes-Benz Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 

Title goes here

close
video goes here
description goes here. Read Full Story
For the best viewing experience please update your browser to Google Chrome