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2Addicts | BMW 2-Series forum Technical Topics Suspension | Chassis | Brakes F22 M240i Xdrive and M3/M4 LCAs

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      02-13-2023, 12:56 PM   #1
seanroberts000
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F22 M240i Xdrive and M3/M4 LCAs

Did a cursory search here and couldn't find answer...

Indy shop says front LCAs need replacement (at 80k miles, I can't argue... feels loose under heavy acceleration and knocks over bumps).

I want the M3/M4 upgrade (would install myself, Indy won't install anything outside stock) to remove the dead zone in middle and help in corners— but doesn't look like it's Xdrive compatible?

Can anyone confirm if they will fit?

Thanks.
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      02-13-2023, 03:10 PM   #2
freakystyly
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Don't forget your front wheels are driven by half shafts (half axles). Pushing the wheels out further would disconnect or make them very loose.

They do make stiffer x-drive bushings that work with stock arms.
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      02-14-2023, 06:17 PM   #3
jb-slow
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Just throw some new arms in or replace the bushings. The M3 arms seem to mess up more more than they fix, you'd likely need more parts to make it align right. But I doubt any of it would work on a x-drive car, you can't change much with those.
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      02-16-2023, 01:19 PM   #4
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Now that the G series M3 is offered in X drive - someone should start exploring the cross compatibility if any exists.
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      02-16-2023, 02:28 PM   #5
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Quote:
Originally Posted by WolfGTI View Post
Now that the G series M3 is offered in X drive - someone should start exploring the cross compatibility if any exists.
The front suspension parts look to be different on the G80/G82 RWD compared with the previous F80/F82 RWD, so they probably won't be compatible with the F22. The change in the hub to 5x112 vs 5x120 bolt pattern and 72.6 to 66.6mm hubcentric boss likely included a lot more stub axle and suspension arm changes, too.

This isn't unexpected, as the Gxx cars are on the CLAR platform now, but the Fxx cars weren't.
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      02-16-2023, 03:07 PM   #6
seanroberts000
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Thank you all for the reply. I figured if I'm undertaking the activity to raise it up and disengage the half axles, I might as well replace LCAs and thrust arms as well.

I think F22 Xdrive is limited to only these options:
1. Replace all four with OEM style arms/bushings: FCP Euro conveniently sells a Lemforder kit with all four.
2. Replace bushings only: I would love to go with monoball (VAC), but don't have a press to swap the bushings and don't like the idea of using old arms @ 80k miles.
3. Replace all four with SPL: HPA sells the F22 Xdrive arms $$$$$, but the open bearings are not ideal for harsh New England winters (road salt)
4. Replace the thrust arm with Mehle HD, and the LCA with OEM or Lemforder.
I will probably end up going #4, but am interested if anyone has run the Mehle HD thrust arms? Do they tighten up the numbness at all but still offer some give for street use? I don't track the car and it's a daily driver.

Thank you for any advice!

Last edited by seanroberts000; 02-16-2023 at 04:11 PM..
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      02-16-2023, 10:28 PM   #7
WolfGTI
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If you call VAC and buy the arms and monoballs from them, I am sure they would swap them for you.

Quote:
Originally Posted by seanroberts000 View Post
Thank you all for the reply. I figured if I'm undertaking the activity to raise it up and disengage the half axles, I might as well replace LCAs and thrust arms as well.

I think F22 Xdrive is limited to only these options:
1. Replace all four with OEM style arms/bushings: FCP Euro conveniently sells a Lemforder kit with all four.
2. Replace bushings only: I would love to go with monoball (VAC), but don't have a press to swap the bushings and don't like the idea of using old arms @ 80k miles.
3. Replace all four with SPL: HPA sells the F22 Xdrive arms $$$$$, but the open bearings are not ideal for harsh New England winters (road salt)
4. Replace the thrust arm with Mehle HD, and the LCA with OEM or Lemforder.
I will probably end up going #4, but am interested if anyone has run the Mehle HD thrust arms? Do they tighten up the numbness at all but still offer some give for street use? I don't track the car and it's a daily driver.

Thank you for any advice!
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Integrated Engineering engine mounts, Dinan CAI, AA catted DP, Remus resonated cat back.
Rogue Engineering SSK & transmission mounts, WaveTrac LSD.
Ohlins R&T coilovers, Turner monoball thrust arms, F87 LCAs, GC camber plates, Superpro subframe bushings, Megan Racing adj. RCAs, delrin differential bushings. Stoptech BBK 6 piston (f) 4 piston (r).
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      02-17-2023, 06:05 AM   #8
seanroberts000
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Thanks… yeah, as I looked more deeply in the VAC catalog they do have the pre-installed monoballs listed for F3x, which confirmed in product details will work for F22. Good news!
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