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BMW 3-Series (E90 E92) Forum
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Bilstein B4 with Eibach Springs?
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04-24-2020, 10:34 PM | #45 |
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Wait a minute, you'd rather buy rough riding shocks AND install them and ride around for 10's of thousands of miles than remove the rear shocks twice and be happy all the time?
The reality is that even the Konis on full soft in the rear are prolly better than 90% of the market. Just give them a 30% from soft setting and I bet you're 90% of the way there. You're over thinking this. Good known product > all else. |
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04-25-2020, 12:18 AM | #46 | |
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https://www.dinancars.com/products/s...arts/D140-0946 |
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04-25-2020, 04:32 PM | #47 | |||||
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I don't care what springs or marketing material says. I am not here to debate anything of that sort. I asked for opinion and experience. I got it. However, given the empirical data performed by TireRack and several other notable institutions, every single test revealed that pro-kit springs improved handling of the vehicle. Go check out liked article and video. It's an interesting read. Also, how do you explain every single review on these springs which mentions that ride improved, is more direct, is not punishing? I am not here to debate springs, lowering, brands etc. I don't know enough about them to even say two coherent sentences, but I know when someone is talking out of their ass. Quote:
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All that aside, I do appreciate the input. It's valuable. I think it did help me reach a decision. |
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04-25-2020, 05:01 PM | #48 | |||
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Thank you for your time to document you knowledge and provide input in civil way. I think I have enough information on this topic to make a decision. |
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04-25-2020, 10:58 PM | #49 | |
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Also, as mentioned Dinan (and TCKline) make rear top adjustable Koni shocks. I've never brought myself to spend that much on them, however. Always wanted, but alas, ever the miser I am. They're normally a little less than 2x the cost, which is not trivial. Then you cant use the cheap (and awesome) rear Monroe shock mounts without modifying them either as the shaft diameter is 2mm larger (12 vs 10). Of course, Dinan will sell you the top mount kit in 12mm size, but ya know after all that, you've spent ~$500 EXTRA for rear top adj's. For that money, I'd just leave the rear end tore apart for a couple of days and ride around to assess. This way R&I time is cut down. But ya know, I'm always looking to save a buck. ymmv Last edited by tlow98; 04-25-2020 at 11:06 PM.. |
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04-25-2020, 11:04 PM | #50 | |
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Plus, in the wagons it's such a pain in the a$$ to get to the rear top mounts, you might as well just pull the damn shock. Coupes and Sedans have it much easier in that respect. |
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04-26-2020, 02:29 PM | #51 | |
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Tire Pressure: Front:35lb Rear:35lb Shock settings: Front:1 1/4 from full soft Rear: 1 1/4 from full soft Alignment: Full tank, no weights. Stage 1 & 2 Front: Camber: -0.6 Caster: 6.5 Total toe: 0.17 Rear: Camber: -1.6 Toe: 0.23 Stage 3: Camber: -1.1 Caster: 6.5 Total toe: 0.17 Rear: Camber: -1.8 Toe: 0.23 Source: https://documents.dinancars.com/d100-0925.pdf |
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04-26-2020, 07:28 PM | #52 |
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A MacPherson strut is a MacPherson strut is a MacPherson strut...doesnt matter if it's on an "old tech" car like the E30, or on this platform...which, at ~15 years is pretty old tech at this point as well.
Here's another article you can just as easily google yourself: https://whitelineperformance.com/blo...ight-affect-it My goal isn't to scientifically prove something to you that's already been scientifically proven...if the topic sparked your interest, there's plenty to read about it online. Who knows, maybe you'll read about it from someone that has the required valadility you desire as well. TireRack does in fact sell quality parts. Just because it's sold on TireRack though doesn't mean it's the best solution for every goal. To put 100% of your trust in their marketing is absurd though, any way you cut it. They also sell H&R extreme lowering springs for this platform...at 2"+ drop it doesn't mean the quality of the springs are junk, but likely not the best option for 99% of those shopping for springs on this platform either. I've had good luck with Eibach pro-kits on other platforms, but thats because the specs on those pieces, when compared to stock, made sense in those situations. For this platform they do not. The only thing gained is a drop in height...that's it. Also, the glowing reviews you've read on the B12 kits are from people that are coming from crap factory dampers and have nothing else to compare it to. 99% of the benefits they're seeing are coming from the dampers themselves...not the springs. This is why you'll see just as positive of reviews coming from B6/B8 owners that kept their stock springs. If you look hard enough, you'll also find reviews of peeps that are blowing through compression and slamming into the bumpstops on the B12 setup...this is what's known as deductive reasoning. Already been mentioned in this post, so feel free to re-read it. Also, don't feel bad about the B6 debacle. Bilstein originally specified non-sport and sport spring owners to use B6 dampers, leaving B8s to be speced for aftermarket lowering springs only. That has since been revised. I too had the problem. On sport springs up front, my B6s lasted only 60k miles. B8s are in there now and it's all good....it is what it is. At some point you just gotta use some common sense when it comes to this stuff...the info is out there and easy to find. If you're more interested in just following the crowd and joining the sheep, go right ahead, there's nothing wrong with that...just do it already so you no longer have to waste any time convincing yourself otherwise. |
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05-18-2020, 01:36 PM | #53 |
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Lots of good info here, so perhaps I'll tack on my question here as my objectives are similar to the OP.
I have E91 xDrive non-sport with 86k miles and I will be refreshing my suspension. I would like a factory Sport suspension feel with a drop only to factory Sport specs and retain factory OEM ride. So, I decided to get Bilstein B4 sport version, but I cannot find options for sport springs. Is there a factory combo that works for E91 xdrive? |
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05-19-2020, 04:32 PM | #54 | |
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05-19-2020, 05:08 PM | #55 | ||
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05-19-2020, 06:19 PM | #56 | |
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03-06-2021, 11:49 PM | #57 | ||
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03-13-2021, 05:57 PM | #58 |
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Well, an update on this.
I actually ended up getting eibach springs and Koni special active dampeners. I am super pleased with this combo. Ride is just awesome. Soft enough, but also car handles really well. Super composed. In regards to lowering and "running" the handling etc, well I do not track the car, but there is a "solution" for this: https://www.turnermotorsport.com/p-5...-tie-rod-ends/ I didn't make the tie rod change yet, as I am considering refreshing my control arms and might do everything at once. |
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03-13-2021, 08:33 PM | #59 | |
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03-15-2021, 03:08 PM | #60 | |
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https://www.koni-na.com/en-US/NorthA...=114&mk=6&mt=1 My setup: Eiback sway bar front and back, eibach springs, whiteline inserts, m3 control arms, koni special active. When replacing the shocks, I also swapped out the springs. So all other mods listed were there previously. First impressions with my setup is following: Car feels much more docile. It absorbs bumps much better, without lack of confidence. My Bilsteins were harsh and you could feel every imperfection in the road. It got to the point where I was avoiding specific lanes or roads. With Konis, all those imperfections get absorbed and ride is super smooth (once again - this is compared to Bilstein b6). I believe that the setup that I have now is perfect for DD vehicle. I can't speak of KONI yellows. Maybe they are even better, but this is very nicely balanced setup. Car just feels planted, yet very comfortable. I am able to take a corner 30mph over what I was comfortable before. Highly recommended. The negatives that I noticed so far: - slight nose rise and dip when accelerating / braking |
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03-15-2021, 05:31 PM | #61 | ||
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03-16-2021, 08:05 AM | #62 |
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So, this thread is really interesting. I say that because I've run B6s on two different BMWs and had two different results. The first was an xDrive E91, and they were fantastic. They "blew off" when I hit a bump, but kept firm handling feeling when turning. Overall, I was really impressed with them. When I got my current E91, which is a RWD/Sport model, I popped a set of B6s on, and disappointingly, they're really fucking harsh. My wife won't ride in the car for any length of time, though my toddler age son things the jostling is hilarious.
My theory is that the lower sport package springs basically make the car sit on the bumps like an aftermarket lowering spring, so that there's basically no travel. In hindsight, I probably should've ordered a set of B8s because my car has sport package springs. Where this applies to the OP is that the coupes basically have sport package springs, so I wonder if he was sitting on the bumps with his B6s, which are the same P/N between coupe and sedan. This could have contributed to his harsh ride. If he had gotten the B8s, perhaps the ride would've been better, though I don't blame him for switching brands after the bad initial experience. Bilstein could remedy this issue with better product literature, though I can't imagine its easy to keep all the applications straight. He could've also possibly put in shorter bumpstops in the rear and cut the internal stop in the front, though that's a lot of work and I don't blame the OP for not doing it. The plan for my car is to try putting in non-sport springs, I bought a set and I just need to find time to install them onto my wagon. I think that a lot of the sport package magic comes from the swaybar balance, so I'm hoping that the spring swap won't make it lame to drive. I'm also hoping that it has the positive side effect of raising ride height enough to allow me to not scrape on everyfucking curb I encounter. |
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03-16-2021, 09:27 PM | #63 | |
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