03-30-2021, 03:06 AM | #45 |
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The above photo pretty sums up to what F80 springs look alike.
I have also gotten a set of an F80 DCT CP and I compared them to my eibachs. For xdrive models, especially 3.0L , an F80 springs are much much lower then -05 & -06 versions of eibach springs . I take it thats to do with totally different dampers that come fitted on F8x chassis. But if you like the slammed look, they look well. |
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03-30-2021, 12:21 PM | #46 |
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04-07-2021, 10:45 PM | #47 |
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I have a 2017 340 xdrive with standard suspension (no EDC) and looking at the MB/MC combination, thoughts? I'm considering the swap mostly for performance/handling, drop/lower effect is only secondary. Another option is F83 springs, but the F83 is around 4k lbs compare to the the f30 340xi 3700-3800; maybe not a good idea?
Last edited by anh3; 04-07-2021 at 10:57 PM.. |
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04-08-2021, 03:07 PM | #48 |
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09-12-2021, 02:18 PM | #49 |
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So I have a set of F8x H&R Sport Springs from my M3 that sold a few weeks ago.
I have a F30 340i xDrive now. What's the consensus on the F80 lowering springs working on my 340?
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10-13-2021, 04:41 PM | #50 |
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I've completed my project as of this afternoon, front-MB, rear-MC, with stock dampers on 340xi. Noticeable drop in rear, front I would say half an inch lower, have only drove a few miles around town under 50 mph. My main reason was to have stiffer spring and better road feel, which I would say is about 10-20% stiffer as of now. Not sure if it'll need time to settle as the F8x springs I got was from car with only7k miles.
I failed to take any pics before project, but will upload some soon. After driving at speed and taking moderate corners, it is way better than stock springs. I had a leased 2017 340rwd with msport adaptive suspension and track package, I don’t know if there is a subjective way to compare. This is at least 50% closer to that in tems of stiffness, road feel, at least 50% more ‘thud’ going over bumps and what not. Significantly less of that bloaty xdrive feel and/or body roll, it is close to the drive feel I mentioned above Last edited by anh3; 10-13-2021 at 05:53 PM.. Reason: Pics and update |
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01-30-2022, 10:21 AM | #51 |
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Thanks to everyone who contributed to this thread!
I wanted to leave a few pics so that anyone else who's thinking of taking on this project has an idea what ZCP Springs look like on a 340i Xdrive
Front Springs - F80/82 ZCP Manual: MP Rear Springs - F80/82 ZCP Plain Roof: MR Dampers Bilstein B8's When I started this project I was adamant that I wanted a lower stance however its really not really practical with the weather and road conditions where I live - I'd effectively be driving a snow plough in winter.... |
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02-12-2022, 10:20 PM | #52 |
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difference in road feel
notice significant road feel as compare to stock springs?
It's feel drastically different and probably 80/90% firm/stiffer for mine. Not as harsh, but as firm as the Msport and track handling package I had on the 340 before. I looked at the difference between curb weight of the F80 vs. the stock 340ix, about 150lbs so that extra weight sitting on the F80 springs contributed to the firmer feel. Hadn't have any issue with bottoming out, I don't think the bump stops have even been engaged yet, I used F80 bump stop for front and kept stock bump stop in rear. Last edited by anh3; 02-13-2022 at 02:34 PM.. Reason: spelling |
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02-13-2022, 12:49 PM | #53 | |
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I'm also using f80 bump stops in the back and I've also never felt them engage my front dampers have built in bump stops. Im certainly no expert on suspension and I'm learning as I go so I couldn't comment on the weight differences with regards to performance between the F80 and 340i Xdrive when using f80 springs. All I can say is that it's a massive improvement. The traction control, even when I'm in comfort mode, doesn't kick in any where as early as it used to so traction is up massively and the car is a lot more fun to drive. This could have something to do with the 15mm rear sway bar that I Installed - Im currently waiting for a 28mm H&R front sway bar to arrive and hopefully balance her out a little more. I did a little research and the F80 competition uses a 28mm or 26mm front bar (not a 100% sure) and I've heard good things about the H&R bars up front on 6 cylinder f30's so we'll give it a go. What specific springs are you using? Last edited by mixmastermike; 02-13-2022 at 10:30 PM.. |
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02-13-2022, 02:33 PM | #54 |
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front-MB, rear-MC, with stock dampers and those are my only mods on suspension. Everything else is stock. I would also have gone with better dampers than stock if I have to do it again, though I don't know how much 'better', but the F80 spring is definitely a much improved mod on its own for the Xdrive chasis. Also more noticeable improvement is the bloaty feel, body-roll in corners is much less noticeable, more control.
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03-13-2022, 06:38 PM | #55 | |
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I was about to order Dinan lowering springs for my 435ix |
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03-23-2022, 11:04 AM | #56 |
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Thinking about fitting F8x springs to my 335d F31 but still on the steep part of the suspension learning curve. The original post from FaRKle is very informative and has really sparked my interest in suspension mods for my car.
The 335d xdrive touring is a heavy car at 1765 kg so I think the best match for a suitable firmer spring which should produce a small ride height drop would be springs from the F83 DCT (at 1790 kg). I think MH at the front and MI at the rear. These would be teamed up with Koni SA dampers. Would this work and has anyone with a F31 335d tried this? Not concerned about a massive drop just looking for a more composed ride with less floating feeling and body roll in the corners.
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03-23-2022, 05:00 PM | #57 | |
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03-24-2022, 09:00 AM | #58 |
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Thanks for the reply. Yes, that is an option, but I'm concerned that the car will be too low at the front. I also quite like the idea of creating something more bespoke with the OE springs.
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03-24-2022, 09:09 AM | #59 | |
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https://f30.bimmerpost.com/forums/sh....php?t=1901058 |
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03-24-2022, 10:32 AM | #60 | ||
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Drives: 2015 BMW 335i x-Drive Auto
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03-24-2022, 10:36 AM | #61 | ||
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03-24-2022, 10:42 AM | #62 | |
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PS. I do like a silver wheel on the Mineral Grey. On no! That's another thing to add to the growing modification list!
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03-24-2022, 12:38 PM | #64 | |
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Appreciate the comments on the wheels. I struggled for a long time on a MG vehicle, until realizing a classic silver just provides the best contrast and wheel definition, imo. |
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05-03-2022, 02:13 PM | #65 | |
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Prospective Setup: F34 6cyl xdrive ~4010 lbs, 50.2% FR Front: MB Springs from a F82 DCT Bilstein B6 Rear: MI Springs from a F83 Bilstein B6 w/ F80/82 bumpstops I'm hoping the lighter weight f82 fronts will drop the front ~.6", with the heavier f83 rears proportionally stiffening the rear with a minimal drop. EDIT: Did you end up with the Eibachs? Last edited by GranTurista; 05-03-2022 at 08:36 PM.. |
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05-03-2022, 07:15 PM | #66 | |
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When I had just the rear bar installed the car felt disjointed. I had a lot more grip on the rear and traction control came on a lot later - it felt off though. With both bars installed it very rarely comes on and I have a lot more confidence in the cars handling as its so predictable. I've also switched over to 245 40 18 tires and this has also helped improve the traction. Last edited by mixmastermike; 05-03-2022 at 07:22 PM.. |
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