Long story short I'm swapping spacers on my rear wheels (going from 15mm to 5mm), and as such bought corresponding length wheel bolts to put on. According to ECS and another source, we needed a round type bolt (left in both pics). However, when I took off an existing bolt, it looks like whoever had put on the previous spacers used a tapered bolt.
Can someone confirm which is the right one? I'm also slightly troubled that these 2 are the same length, so whoever put the spacers on didn't bother to put extended ones on. Obviously this car has been driven quite a bit on the existing setup but now I'm wondering if I need to swap the front bolts also (12mm up front I believe).
The ball seat lug bolts on the left are the correct type. I’m glad nothing catastrophic occurred while you were driving on both an incorrect bolt seat and length.
The ball seat lug bolts on the left are the correct type. I’m glad nothing catastrophic occurred while you were driving on both an incorrect bolt seat and length.
AS I posted on another thread.. I dont understand why people asking for HELP, dont give all the required information ... ??... I was asked a couple weeks ago, why I stopped posting and or on forum as much, and that is the #1 , 1000000% reason why.
People dont realize no one here , except MBWorld is getting paid or benifit for anything, and when you are asking for help, its your duty to make sure all required information is given, as to NOT waste peoples time that are attempting to help.
i'll humor your rant tho since it's a slow morning.
this isn't my first foray into online automotive forums so i understand your frustrations as i have yelled at ppl repeatedly to use the search function. with that said, what exactly would've been enough info to provide up front for my question, after several initial searches yielded little to no info on the w205 cars? did i anger you bc i didn't know that running stock vs aftermarket wheels could have an impact on the lug bolt seat type?
i'll humor your rant tho since it's a slow morning.
this isn't my first foray into online automotive forums so i understand your frustrations as i have yelled at ppl repeatedly to use the search function. with that said, what exactly would've been enough info to provide up front for my question, after several initial searches yielded little to no info on the w205 cars? did i anger you bc i didn't know that running stock vs aftermarket wheels could have an impact on the lug bolt seat type?
Not a rant boss.. just stating a point .. (wasn't really geared directly towards yourself, but lets break it down a little.
(Yes the search function on this forum is less then good.. its crap.... )
It is a catch 22 , as it seemed to me that you were more knowledgeable them the normal user, based on your post, so my response was more to t's comment on "assuming you are running OEM" ...
If I were to ask the same question, say for my wheels, I would prob say... " Hey guys, I have a '20 C63s Sedan, running 19" HRE's with 15mm spacers on my rear wheels and switching to 5mm. etc etc etc "
Again, wasn't really calling you out per say, but I guess I am just one to provide more information then less, since I am asking someone else for help, I think its only just, to give as much information as possible so the "helper" can come back with possible solutions vs trying to figure out what your trying to do , and or ASSUME something.
Yes, it takes a few more sentences to lay out what is what, but in the end, you get a complete response with information that is beneficial to you as well as others.
Otherwise,
You are going to get a ton of ASSUMED answers which most likely would be incorrect, or something I wouldnt want as a guess.
with that said, can anyone help me confirm if their OEM bolts (from the factory) are the same shank length front and back? and what that length is? i have read in a couple w204 posts they're 27mm, don't know if that's the same for the newer gen.
i don't have the benefit of checking myself, as some asshat before me put tapered bolts, of the same length, on all 4 corners.
with that said, can anyone help me confirm if their OEM bolts (from the factory) are the same shank length front and back? and what that length is? i have read in a couple w204 posts they're 27mm, don't know if that's the same for the newer gen.
i don't have the benefit of checking myself, as some asshat before me put tapered bolts, of the same length, on all 4 corners.
thanks in advance.
I can check when I get back home, as I dont have them in front of me.
What year, model, type are you again ??
example:
The MB part number is 0009905407
14x1.5mm; 69mm Overall; Conical; 17mm Wrench
with that said, can anyone help me confirm if their OEM bolts (from the factory) are the same shank length front and back? and what that length is? i have read in a couple w204 posts they're 27mm, don't know if that's the same for the newer gen.
i don't have the benefit of checking myself, as some asshat before me put tapered bolts, of the same length, on all 4 corners.
I use that site often for info on stock wheels, but I'm not sure if I'm missing something from what you've shared. I've learned through this process thus far that we use M14 x 1.5 17mm ball face bolts. I'm wondering what the shank length is (in m) of OEM bolts, front 284222685129 rear (if they're different). Is that info available on that site and I'm just not seeing it? Thanks.
I use that site often for info on stock wheels, but I'm not sure if I'm missing something from what you've shared. I've learned through this process thus far that we use M14 x 1.5 17mm ball face bolts. I'm wondering what the shank length is (in m) of OEM bolts, front 284222685129 rear (if they're different). Is that info available on that site and I'm just not seeing it? Thanks.
click on the details and it takes you to the definition of the bolt dimensions. Its all DIN norm bolts.
Ball seat bolts are required for OEM wheels. OEM bolts have a 27 mm shank which is the distance between the end of the seat and end of the bolt (you're basically excluding the head of the bolt). M14x1.5 bolts require 7.5 turns for proper engagement.
Ball seat bolts are required for OEM wheels. OEM bolts have a 27 mm shank which is the distance between the end of the seat and end of the bolt (you're basically excluding the head of the bolt). M14x1.5 bolts require 7.5 turns for proper engagement.
Thanks for confirming what I had heard. Based on that and my math, I think I should be ok running 35mm in the rear where I have a 5mm spacer, and then 40mm up front where I have a 12mm spacer.
Just of note as I don't think I've seen anyone mention it (although it might be included on the info in some of the links others have posted) is that the shape of the ball seat is also important. I'm pretty confident our cars use R14 ball seats on the OEM wheels. Some aftermarket bolts I've seen (especially the cheaper ones) use R12 seats with an M14 shank, which can lead to only a small portion of the ball seat actually making a contact with the wheel. Putting the same amount of stress on a much smaller area creates more potential for failure. Good visualization here. So just keep an eye out while you're shopping around for bolts. https://otisincla.com/ has a good selection of high quality bolts.
Just of note as I don't think I've seen anyone mention it (although it might be included on the info in some of the links others have posted) is that the shape of the ball seat is also important. I'm pretty confident our cars use R14 ball seats on the OEM wheels. Some aftermarket bolts I've seen (especially the cheaper ones) use R12 seats with an M14 shank, which can lead to only a small portion of the ball seat actually making a contact with the wheel. Putting the same amount of stress on a much smaller area creates more potential for failure. Good visualization here. So just keep an eye out while you're shopping around for bolts. https://otisincla.com/ has a good selection of high quality bolts.
Great info. I'm replacing mine w/H&R bolts, some of which have "Merc R14" in its description but others without, which is kinda weird.
Great info. I'm replacing mine w/H&R bolts, some of which have "Merc R14" in its description but others without, which is kinda weird.
If they are merc specific h&rs with M14x1.5 shanks you should be good, I'm pretty sure all OEM wheels for cars with a 14mm shank diameter are R14 ball seats. Things get funky when you want to mix and match, I only know about all this crap because I put SL AMG wheels on my mom's 209 CLK cab...haha.
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