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Discussion Starter · #1 ·
I have a 451 and want to buy a long threaded bolt to help align the wheels when I rotate them. Does anyone know the correct thread size? It can't have a head on one end, must be threaded end to end. It will be just to help align the wheel, put the other two bolts in and remove the threaded one by hand. It can be a little long as that will help in gripping it to remove it.

Thanks in advance. I hope one of you tech minded members can help. I should know this, but I can't seem to find the info on here.
 

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I have a 451 and want to buy a long threaded bolt to help align the wheels when I rotate them. Does anyone know the correct thread size? It can't have a head on one end, must be threaded end to end. It will be just to help align the wheel, put the other two bolts in and remove the threaded one by hand. It can be a little long as that will help in gripping it to remove it.

Thanks in advance. I hope one of you tech minded members can help. I should know this, but I can't seem to find the info on here.
New to Smart here. Why do you need this device? Can't you just hold the wheel up and screw in the lug bolt?
 

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Discussion Starter · #12 ·
New to Smart here. Why do you need this device? Can't you just hold the wheel up and screw in the lug bolt?
I can, but do to old age and arteritis, my hands don't have the flexibility they once had. I take my wheels off every couple of months to clean and wax the inner barrels, and the guide will help hold them while I screw in the wheel bolts.
 

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Just in case older Mercedes (early 90s W126 or W201) came with tool kits that had one of these hole alignment devices. I checked on McGard website and seems same thread as my mother’s ‘92 190E.

(Just another option for you)...
 

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Hey guys, thanks everyone for all the help. I remember seeing those tools several years ago mentioned on here. I will be ordering one tomorrow.

Save the money.
Go to home depot or ace hardware and buy one each 12mm x 1.5mm x 60mm bolt, go home and cut the head off.


Maybe I should start selling these, lol easy to make with my lathe.


BTW they are the same as many popular Mercedes and Bimmers.


The only oddball are the Volvos, which for a long time had 12mm x 1.75mm lug bolts.
 

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New to Smart here. Why do you need this device? Can't you just hold the wheel up and screw in the lug bolt?
It makes wheel and rotor mounting easier. When my car was young the bolts always came out with ease with a little anti-seize. However, in recent years the bolts seemed to have degraded and seized to the hubs despite the anti-seize. To make matters worse, the degradation was so bad that they instantly rounded out when touched with an impact. Oh well, I drilled both bolts out and have left it that way since. For the 5 minutes those bolts saved me in the past, they added two or three hours to doing my brakes in 2017 (when the bolt on the left side decided to disintegrate) and 2019 (the right side finally followed suit). :shrug:
 
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