04-05-2024, 10:25 PM | #1 |
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F80 M3 rear subframe brace on F30
Does anyone try to fit the M3/M4 rear subframe brace on the F30?
I found threads about fitting the F32 / F36 rear subframe brace on F30 however, can't find any threads about the M3 ones The M3 one has slightly more attachment points so I think the effect should be better than the F32 / F36 ones here are the parts number M3 ones (1 - on diagram) 33302284645 Dual link, link 33302284646 Dual link, right 4 F36 series ones (1 - on diagram) 51617351583 Pull rod left 51617351584 Pull rod right |
04-06-2024, 04:19 AM | #2 |
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Surely the rear brace for an F31 would be a no-hassle option ?
Why do you want the brace from an F80 M3 ?
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Current : F31 330sD, remapped, Ohlins Road & Track, Millway camber plates, Quaife LSD, Stoptech brakes + Pagid RSL1 pads all round, Weichers front strut brace, Eibach front & rear anti-roll bars, Michelin MP4S.
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04-06-2024, 01:38 PM | #3 |
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I looked into doing the F31 rear brace on my pre-lci F32 but my car doesn't have the rear-most attachment point that the Touring & Gran Coupes have.
It's just aft of the rear diff and appears to be attached to the underside of the trunk pan. You can see it in this pic of a touring Ultra Brace. Haven't looked into the M3/4 brace. |
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04-07-2024, 08:30 PM | #5 | |
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which is number 4 for left and right And the rear is quite bouncy on my F30, so I'm thinking of stiff things up |
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04-07-2024, 08:34 PM | #6 |
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04-08-2024, 03:23 AM | #7 | |
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Uprated springs, dampers, and subframe bushes would have a far bigger effect on chassis control.
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Current : F31 330sD, remapped, Ohlins Road & Track, Millway camber plates, Quaife LSD, Stoptech brakes + Pagid RSL1 pads all round, Weichers front strut brace, Eibach front & rear anti-roll bars, Michelin MP4S.
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04-08-2024, 07:20 AM | #8 | |
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That is one of many braces on the F80 that the F30 does not have, so there's little to be gained from just fitting the rear one without the others. |
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04-08-2024, 12:26 PM | #9 |
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i got one of these:
https://rollsperformance.com/shop/ol...mw-mid-chassis there's a thread on here somewhere about this |
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04-09-2024, 11:52 PM | #10 |
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I have just the M brace that overlaps just the exhaust tunnel and does not connect to the sub-frame. I'd say the difference is slightly noticeable but minimal at best. When I take it to the track in a month I'll know it's full potential.
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04-10-2024, 07:38 AM | #11 |
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Same here, been waiting for someone to say that. Noticeably stiffer and lighter when both parts are held in hand.
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chassis, chassis brace, f30 3 series, f80 arm, retrofit, strut brace, subframe, suspension |
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