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M3 control arm question
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09-19-2019, 08:09 AM | #1 |
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M3 control arm question
Quick question, yes I have searched .
I plan on upgrading to the M3 front control arms on my 2008 335i . I have seen it mentioned before it is recommended/required to replace the bolts/hardware for the arms when swapping them out. However, none of the threads regarding it really mention if people have replaced them..1. Is it reuired to change the bolts/mounting hardware when swapping to M3 front arms? 2. If it is, could someone provide the correct part/kit # ? I would be purchasing from FCP Euro and cannot determine which would be required. Thanks for the help in advance!!! |
09-19-2019, 02:02 PM | #2 | |
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FCP sell a kit with the required fasteners for about $45. It's usually listed with the arms themselves.
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09-19-2019, 03:08 PM | #3 |
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As I recall (I'd have to check for sure), I bought this OEM kit and all of the necessary hardware from ECS here:
https://www.ecstuning.com/b-genuine-...t/e9xm3310801/ https://www.ecstuning.com/b-genuine-...31106763928kt/ Not sure if my indie actually used all of the new hardware provided.
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09-19-2019, 04:23 PM | #4 |
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Personally, I would replace them whether using M3 control arms or the standard non-M E90 arms. I recently loosened my bolts to install struts and was a bit paranoid about retightening them since they are apparently torque to yield bolts with a locking nut. There's a torque spec plus an 90 degree rotation required. I torqued them then rotated an additional 45 degrees, using loctite on the nuts just for peace of mind. BUT when I replace control arms I'm getting new hardware, it's cheap enough to just do it.
I read several reports that when installing M3 control arms onto a non-M it's difficult to get the bushings into the bracket on the subframe. Is there any truth to this? |
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09-19-2019, 04:32 PM | #5 | |
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Drives: 2007 Black/Black 335i e90
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You will need a file or a dremmel with really corse sanding wheels. When I did mine, the control arm wouldn't fit unless I shaved about 1/16 of an inch out inside the subframe fitting. |
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09-20-2019, 04:12 AM | #6 |
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Just use sand band or file to shave off a bit from each side of the control arm knuckle/axle. Lubricate the correspond part of subframe and push it in.
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09-22-2019, 06:49 PM | #8 |
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09-26-2019, 07:12 AM | #9 |
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I just installed mine yesterday... was a breeze I used a dremel and sanding a little in the subframe and used anti sieze and they slide in with a little wiggling. I used a screw driver to line them up and inserted the new bolt. Car is driving like crap right now going to get alignment done this afternoon.
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09-26-2019, 07:38 PM | #10 |
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After the alignment today WOW!! Get it aligned to the M3 specs and the handling in awesome!! I got the fronts to -1.6 without even removing the alignment pins
Fronts are -1.6 and Rear is -1.8 Definitely a great upgrade! |
09-27-2019, 07:36 AM | #11 | |
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I just tell them to do the alignment specs to an M3 of the same year and I will be good to go? |
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09-28-2019, 10:49 AM | #12 | |
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09-30-2019, 08:00 AM | #13 |
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