02-17-2022, 08:46 AM | #1 |
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DIY - G80 / G82 M3 / M4 Complete Guide to Lowering Springs Installation (RWD)
Couldn't find all of this info in one place so I thought it would be a good idea to get everything together and easier to find for future owners.
The Evolve & XPH MSS HAS install videos are very good guide and should be your starting point, they did however miss a few things like torque specs and tools required which I will cover below: Evolve MSS HAS Install Video: Extreme Power House install video: Tools required:
*BMW sometimes changes hardware throughout the model years which may require different tools, always double check before starting the project if you are in doubt or have limited access to tools Instructions: Start by lifting the car, if working on jack stands you'll want to get the car up as high as possible. Take the wheels off, then choose what end you want to start on, or you can do each corner at a time if working on the ground but that will probably be a bit harder / tedious. An alignment is highly recommended / required shortly after install, after a few days of driving or before any long distance drives. Disclaimer: If you are at all uncomfortable or inexperienced working on projects yourself (especially projects involving dangerous tools), please reconsider doing the job yourself. It is very possible on any DIY to damage your property, create a hazardous condition, or harm or even kill yourself or others. Myself nor this forum would be responsible for any damage as a result, proceed at your own risk Front:
Rear: *I choose to remove the shock bolt/nut and the camber strut/bolt, Evolve removed the inner control arm bolt/nut and left the camber bolt/nut on. I think that approach is a little harder to get the arm lined up when reinstalling, but you can choose whichever method you prefer.
Torque References
If anyone has anything to add or any suggestions I can update this post, if anyone has any additional pictures they may find helpful please let me know as I can add those too, I didn't have enough pictures for every step but includes the ones I did have. AST Springs shortly after install (not yet settled).
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Last edited by tdott; 02-25-2022 at 01:12 PM.. Reason: G80 / G82 M3 / M4 |
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02-17-2022, 09:07 AM | #3 | |
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The ride is much better now, but that is because the PDI tech forgot to remove the plastic shipping bump stops and the stock ride was pretty bad and was mostly riding on bump stops the whole time. So we don't have a good comparison. No noises, AST fixed that issue with the rubber isolator pad locations I believe.
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02-17-2022, 09:11 AM | #4 |
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Thank you for sharing
We also have a video with MSS install
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02-17-2022, 09:11 AM | #5 | |
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Thinking of switching to AST. First I thought it was too low but the more I see them installed, the more I'm liking the drop/stance. Did you not have any issues getting enough leverage for torquing the rear bolts? I'm guessing you installed these on jack stands? |
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02-17-2022, 09:14 AM | #6 |
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Thanks! I added this video to the OP! I didn't watch the entire video to see if you covered tools and torque specs or not but I'm sure others will find it useful too. Always good to have multiple points of views.
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02-17-2022, 09:17 AM | #7 | |
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But yea, on jack stands it would be more difficult with the limited space, better to get the car up as high as possible.
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02-17-2022, 09:24 AM | #8 | |
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I guess I'll need to look for a rent-a-bay. LOVE the color btw! |
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02-18-2022, 12:01 AM | #9 | |
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Great compilation btw. |
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02-18-2022, 02:15 AM | #11 |
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Sweet write up!
I've yet to see this job being done on an xDrive.. |
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02-18-2022, 09:54 AM | #14 |
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I did, it's in my post on AST springs. Just got the nuts and bolts from the dealer.
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04-21-2022, 05:26 AM | #16 |
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Any DIY guide for the Xdrive version? Would love and appreciate for anyone to make a write up for one. I heard it's little bit more difficult as you have to the the front struts out? Thank you.
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04-24-2022, 07:01 AM | #17 |
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I just did them on my x drive remove all wires from all the The front arm and remove 2 bolts Use a spreader
Some wd40 and pull down on Rotor slide shock out of Lower control arm and remove 4 bolts up top and remove whole shock |
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10-18-2022, 09:07 AM | #18 |
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Has anyone found a simple way to adjust the rear spring height without removing the entire assembly? Fronts are simple to adjust while still on the car but rears seem to be impossible.
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10-19-2022, 12:27 PM | #19 |
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No, my installer adjusted my rear and he said the same thing. There's no way without taking the entire rear back apart.
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12-06-2022, 03:55 PM | #20 | |
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Great write-up! I'm thinking of installing a M Performance HAS kit myself now.
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12-06-2022, 03:59 PM | #21 | |
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