Wheel spacers and lug bolts - Mercedes-Benz Forum
 
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post #1 of 10 (permalink) Old 06-26-2018, 12:05 PM Thread Starter
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Wheel spacers and lug bolts

A few weeks ago I ended up purchasing a set of R129 wheels. Based on everything I read on this forum I will need 20mm spacers.
Is there a company that makes wheel lug bolts just as in the picture below but with a 20mm longer threaded section for a total length of 60mm?
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post #2 of 10 (permalink) Old 06-26-2018, 01:43 PM
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You might try Otis Inc. LA Generally speaking if they don't have it it probably isn't made. I used custom adapters on mine only I needed 25mm to clear the front caliper. They're not really adapting anything but would give you a bigger choice in lug bolts. IIRC the owner's name is Lenny...

Wheel Adapters, Wheel Spacers, Hub Rings, and much more! | Motorsport Tech
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post #3 of 10 (permalink) Old 06-26-2018, 02:34 PM
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Are those the 8 x 16" wheels? IIRC I tried to use 10mm spacers to clear the tie rod ends on mine. They were not hub centric and wobbled. Lugs are available in lots of lengths fortunately.
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post #4 of 10 (permalink) Old 06-26-2018, 03:37 PM Thread Starter
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Originally Posted by reno4u2 View Post
You might try Otis Inc. LA Generally speaking if they don't have it it probably isn't made. I used custom adapters on mine only I needed 25mm to clear the front caliper. They're not really adapting anything but would give you a bigger choice in lug bolts. IIRC the owner's name is Lenny...

Wheel Adapters, Wheel Spacers, Hub Rings, and much more! | Motorsport Tech
Thanks for posting the links.
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post #5 of 10 (permalink) Old 06-26-2018, 03:38 PM Thread Starter
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Originally Posted by Franco380 View Post
Are those the 8 x 16" wheels? IIRC I tried to use 10mm spacers to clear the tie rod ends on mine. They were not hub centric and wobbled. Lugs are available in lots of lengths fortunately.
Yes, 16 x 8 ET34
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post #6 of 10 (permalink) Old 07-16-2018, 06:15 AM Thread Starter
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Followed-up with Motorsport-Tech, the company @reno4u2 recommended, and talked to Lenny about what I am trying to do.
He recommends custom spacers 23mm thick with helicoils. The spacer would mount to the hub and the wheel mounts to the spacer.
As stated in my first post I want to use the R129 wheel (see pic.)

There are several benefits going this route:
1. Wheels size 8x16 ET34 with 23mm spacer - effective ET=11.
2. The R129 wheel uses the same bolts as the wheel that is currently on the car. No need to purchase new bolts.
3. I can keep my current spare wheel and donít need to pack extra wheel bolts. I will need to remove the spacer in case of a flat tire.
4. The head of the wheel bolt will be flush with the surface of the wheel.
5. Price of the custom made spacers (4) is $320 shipped, which is about 1/3 more than quality spaces from H&R but I donít need new bolts.

Are there any major concerns going this route?
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post #7 of 10 (permalink) Old 07-16-2018, 06:52 AM
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Mercedes stopped selling the original bolts due to the upper shank breaking. The upper shank above the ball seat was eliminated. The heads of the replacements sit deeper into the hole.
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post #8 of 10 (permalink) Old 07-16-2018, 07:03 AM Thread Starter
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Mercedes stopped selling the original bolts due to the upper shank breaking. The upper shank above the ball seat was eliminated. The heads of the replacements sit deeper into the hole.
Thanks for the info. I was not aware of the problem, but it does make sense. That would be a real pain in the behind to get the wheel off if one of the bolts breaks.
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post #9 of 10 (permalink) Old 07-16-2018, 07:36 AM
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That would be a real pain in the behind to get the wheel off if one of the bolts breaks.
Yep. The folks on the 210 forum recommend preemptively replacing all of them. Apparently, getting a broken bolt out without damaging the wheel is nearly impossible.

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post #10 of 10 (permalink) Old 07-16-2018, 09:39 AM
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I got very lucky on a w124 wagon that had seized extended bolts. I could feel them starting to yield, and decided to take precaution. Lots of penetrant and heat from the back side of the rotor was the solution, and I was able to get the wheel off without breaking any bolts. If anyone had gone after that bolt not knowing the issue, I probably would have scrapped the car with the wheel on it.

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