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      08-24-2020, 07:01 PM   #1
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Q's about installing used M Performance Suspension. Please reply.

Hey guys, just picked up a used M Performance suspension, and had a few question about the install.

First, I'm not finding a dedicated video for this. Is that a bit weird, or not? Seems like quite a popular item for not having its own install video, no?

Second, I know there is hardware that is "one time use only" that needs to be replace with new parts, but couldn't find a definite list, so I contacted Evan at GetBMWParts.com and he was quite helpful in providing me a list (the yellow highlighted parts don't show to be for an M2 when you put them in, but apparently they are).

My question is; my car only has 14,000 miles on it, so are all these nuts/bolts/gaskets really necessary to replace, or can some be used again? Total as-is comes to $118 shipped.

Thanks for any info, and for any install tips you might want to share as well!
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      08-24-2020, 07:50 PM   #2
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My car had 9 miles.

This is what Brian recommended and what I bought and told the dealer to use.

2 x 33 50 6 866 038 gasket
2 x 31 30 7 854 446 gasket
10 x 31 30 7 855 400 hexagon screw with flange M8X33 10.9 ZNS3
4 x 33 32 6 768 884 hexagon nut with collar M10-10 ZNS3
2 x 33 32 6 760 668 nut, self-locking collar M12X1,5-10 ZNS3
1 x 34 33 9 806 226 nut, self-locking M14X1,5-05 ZNS3
2 x 07 11 9 905 418 hex bolt with washer M10X80-U1-10.9
2 x 07 11 9 905 610 hex bolt with washer M12X125-10 ZNS3
2 x 33 52 7 850 600 12-point nut M14X1,5 ZNNIVSI
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      08-24-2020, 07:58 PM   #3
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Please see my DIY on the KW V3 which are almost identical to the MP ones with the exception of height collar. It will answer all your questions.

https://f87.bimmerpost.com/forums/sh....php?t=1595398
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      08-25-2020, 05:57 AM   #4
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The technically correct answer is that Torque-To-Yield bolts are single use only.

That said, there are plenty of people who reuse them and do not have issues. I'd never suggest reusing TTY bolts for say, a cylinder head, but for a component where failure will not be catastrophic, you might be prepared to risk it.

For example, the aluminium undertray on the M2 has 8 x TTY bolts. If one of them were to fail, basically nothing will happen. Heck, if all 8 of them fail (how likely is that?) the tray might fall off but the car isn't going to explode or run off the road. Checking these at each oil change will satisfy all but the most pedantic of users.

Suspension bolts? Probably somewhere in the middle. A failure could be a big deal so you should consider the risk associated with saving some coin.

PS. Those strut & shock mount gaskets are just pieces of paper. They can get a bit sticky and tear when you pull the shocks out but if they hold together, there is no issue reusing them at all. Mine held together just fine.
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      08-25-2020, 08:47 AM   #5
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Quote:
Originally Posted by Caduceus View Post
The technically correct answer is that Torque-To-Yield bolts are single use only.

That said, there are plenty of people who reuse them and do not have issues. I'd never suggest reusing TTY bolts for say, a cylinder head, but for a component where failure will not be catastrophic, you might be prepared to risk it.

For example, the aluminium undertray on the M2 has 8 x TTY bolts. If one of them were to fail, basically nothing will happen. Heck, if all 8 of them fail (how likely is that?) the tray might fall off but the car isn't going to explode or run off the road. Checking these at each oil change will satisfy all but the most pedantic of users.

Suspension bolts? Probably somewhere in the middle. A failure could be a big deal so you should consider the risk associated with saving some coin.

PS. Those strut & shock mount gaskets are just pieces of paper. They can get a bit sticky and tear when you pull the shocks out but if they hold together, there is no issue reusing them at all. Mine held together just fine.
Thanks for the detailed response.

It wasn't that expensive, so I just bought it all, as that's what BMW recommends.
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      08-25-2020, 09:06 AM   #6
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A little bit easier to read list for those that find this thread in a search.

3 things:

33-50-6-866-038 - shock mount gasket is M2C ONLY, the P/N for the OG M2 is different, and I don't have it. I also didn't need it...
31-30-7-855-400 - hexagon screw with flange - will be a slightly different size and shape from stock, as per BMW.
33-52-7-850-600 - 12-pt nut - this nut was too short, and should be replaced with the taller version (34-33-9-806-226), so you need 4 of those, not 2 like shown in the list below.
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Last edited by VisualEcho; 09-17-2020 at 08:04 AM..
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      08-25-2020, 03:14 PM   #7
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Quote:
Originally Posted by Mosely View Post
Please see my DIY on the KW V3 which are almost identical to the MP ones with the exception of height collar. It will answer all your questions.

https://f87.bimmerpost.com/forums/sh....php?t=1595398
This is a great resource that I referenced many times during my V3 Install.

Also YouTube search F80 kw V3 install and you'll get some videos to support as well. As Mosely mentioned the MP is very similar to V3 and the F80/F82 install is very similar to ours as well.
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      08-25-2020, 04:18 PM   #8
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Quote:
Originally Posted by Mosely View Post
Please see my DIY on the KW V3 which are almost identical to the MP ones with the exception of height collar. It will answer all your questions.

https://f87.bimmerpost.com/forums/sh....php?t=1595398
Just used this the other day to install my KW's. Very useful guide. Should also apply mostly to the MP suspension.
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      08-26-2020, 06:40 AM   #9
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Quote:
Originally Posted by VisualEcho View Post
Hey guys, just picked up a used M Performance suspension, and had a few question about the install.

First, I'm not finding a dedicated video for this. Is that a bit weird, or not? Seems like quite a popular item for not having its own install video, no?

Second, I know there is hardware that is "one time use only" that needs to be replace with new parts, but couldn't find a definite list, so I contacted Evan at GetBMWParts.com and he was quite helpful in providing me a list (the yellow highlighted parts don't show to be for an M2 when you put them in, but apparently they are).

My question is; my car only has 14,000 miles on it, so are all these nuts/bolts/gaskets really necessary to replace, or can some be used again? Total as-is comes to $118 shipped.

Thanks for any info, and for any install tips you might want to share as well!
That last item has to be the worst and most inaccurate drawing of a part I've ever seen.
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      08-26-2020, 07:58 AM   #10
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Quote:
Originally Posted by M Fifty View Post
That last item has to be the worst and most inaccurate drawing of a part I've ever seen.
My installer has done several, but I'll let him know anyway.
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      08-26-2020, 01:20 PM   #11
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It's actually shaped like it would attach to the bottom of a small travel iron.
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      09-02-2020, 12:38 PM   #12
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Quote:
Originally Posted by VisualEcho View Post
A little bit easier to read list for those that find this thread in a search.
I've got a new set coming in your part list was very helpful, thanks.

Is yours installed already? If so, were all other bolts reused and have you encountered any issues or noises?
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      09-02-2020, 01:38 PM   #13
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Quote:
Originally Posted by blitzyo View Post
I've got a new set coming in your part list was very helpful, thanks.

Is yours installed already? If so, were all other bolts reused and have you encountered any issues or noises?
I'm starting on it this Friday.

I'm not worried about most of it, but without seeing pictures of exactly what tools were used (even with the list) I'm still a bit nervous.

As soon as I do the job I'm going to literally take a picture of each set of tools you need for each part of the job. I'm a visual type of guy, so it helps seeing things like that (for me).
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      09-02-2020, 03:06 PM   #14
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Quote:
Originally Posted by VisualEcho View Post
I'm starting on it this Friday.

I'm not worried about most of it, but without seeing pictures of exactly what tools were used (even with the list) I'm still a bit nervous.

As soon as I do the job I'm going to literally take a picture of each set of tools you need for each part of the job. I'm a visual type of guy, so it helps seeing things like that (for me).
Good luck, mine's coming in next week and I hope to get it done the same week, not a DIY though.
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      09-02-2020, 04:53 PM   #15
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Originally Posted by blitzyo View Post
Good luck, mine's coming in next week and I hope to get it done the same week, not a DIY though.
I think I'm pretty set.
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      09-02-2020, 05:27 PM   #16
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Here’s a pic I just took using the 3/4” ratchet 18mm pass through with 1/4 ratchet with a 10mm
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      09-02-2020, 06:20 PM   #17
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Originally Posted by Wei718 View Post
Here’s a pic I just took using the 3/4” ratchet 18mm pass through with 1/4 ratchet with a 10mm
Dude, thanks, perfect shot!

Since my pass-thru set is much shorter than that, I hope it works out ok.
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      09-02-2020, 06:38 PM   #18
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Quote:
Originally Posted by VisualEcho View Post
Dude, thanks, perfect shot!

Since my pass-thru set is much shorter than that, I hope it works out ok.
It is close but I just confirmed that it does work without the extension. You’ll be fine and nice tool collection you got there. Can’t wait to read your DIY thread.
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      09-02-2020, 07:49 PM   #19
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Quote:
Originally Posted by Wei718 View Post
It is close but I just confirmed that it does work without the extension. You’ll be fine and nice tool collection you got there. Can’t wait to read your DIY thread.
Thank you sir, I just checked as well. Ordered some ¼" extensions since I never used those either, might as well for how cheap they are.

This is what I'm using. Good thing I have a huge selection of 10mm's from all the Japanese cars I've owned. I confirmed it worked as well, which is great, as this was one of the things that was bothering me. I'm new to this pass-thru stuff.
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      09-02-2020, 08:10 PM   #20
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Quote:
Originally Posted by VisualEcho View Post
Thank you sir, I just checked as well. Ordered some ¼" extensions since I never used those either, might as well for how cheap they are.

This is what I'm using. Good thing I have a huge selection of 10mm's from all the Japanese cars I've owned. I confirmed it worked as well, which is great, as this was one of the things that was bothering me. I'm new to this pass-thru stuff.
That’s great! You are all set!

I just put in an order on these coilovers so I’m not too far behind you.
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      09-03-2020, 01:37 AM   #21
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That's looking comprehensive as a set of tools....

Just a thought, how about a thin section spanner to hold the stem of the upper swaybar link still while you use a conventional socket or ring spanner on the nut?

Last edited by M Fifty; 09-03-2020 at 02:09 AM..
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      09-03-2020, 07:23 AM   #22
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Quote:
Originally Posted by M Fifty View Post
That's looking comprehensive as a set of tools....

Just a thought, how about a thin section spanner to hold the stem of the upper swaybar link still while you use a conventional socket or ring spanner on the nut?
Are you talking about this bit?
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