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09-10-2014, 02:21 PM | #23 | |
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To put it in real terms, I have both my mother and fiance on Koni yellows, which they love. I presume you can handle at least what my mother can.
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09-10-2014, 11:36 PM | #24 | |
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"The KONI FSD shock combines excellent road holding and handing characteristics with high comfort levels. Firmness for sporty driving on even road surfaces. Smoothness for a comfortable ride on uneven road surfaces. It's possible via KONI's patented Frequency Selective Damping technology — technology that actively controls the damping level on the basis of the vehicle's body and suspension movement frequency." As far as reliability, they have the same Koni lifetime guarantee as the yellows. Some people have had issues when using them with non stock springs, which Koni specifically warns against. Did you read the Tirerack test? Real, professionally gathered numerical data on handling, not opinion. The ride judgement is subjective, of course, but that's the part that wasn't close. Tirerack sells both models, so they care little which people buy. They're not the right choice for most people here, including you. Most people here who change shocks want max handling. Most change springs. Most want to manually adjust their shocks. But for the niche including me who want a balance of ride and handling, stock springs, and basically automatic adjustment, the FSDs work very well. Do an Internet search, they have a strong following. Last edited by 128Convertibleguy; 09-11-2014 at 12:18 AM.. |
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09-11-2014, 07:27 AM | #25 |
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Go with a set of Koni yellows, BMWP springs, Whiteline full poly rear sub bushings, and an M3 front sway bar. That's it!
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09-11-2014, 07:53 AM | #26 | |
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As far as rebuild intervals go, Koni's warranty doesn't cover that. It covers manufacturing defects and failure, not wear.
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09-11-2014, 09:53 AM | #27 | |
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It's a similar philosophy to choosing ultra high performance all seasons like the Michelin A/S 3s as a three season tire. On a dry warm summer day, that's a substantial performance hit compared to PSS, even more significant than the difference between FSDs and yellows. Those of us who go there accept that hit in return for consistent predictable handling in adverse conditions, such as cold and wet weather. And better wear. Your car will go around a track considerably faster than mine. But mine will drive quite briskly on a mountain road, substantially faster and much better behaved than stock. And then cruise down the straights with a soft but well controlled ride over the bumps, also much better than stock. That's FSD territory. Tirerack, who took them to the limit, says nothing about them remotely like "utterly fall apart". I cannot guarantee the OP would be happier with FSDs than yellows. But I strongly suspect he would, based on the original post. That's not an isolated case either. Last edited by 128Convertibleguy; 09-11-2014 at 10:05 AM.. |
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09-11-2014, 10:17 AM | #28 | |
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I suspect based on your posting that you don't push your car to the limit, which is perfectly fine. Your choices suit your driving style well. If I lived in the city or some other area with terrible roads and no chance to stretch my car's legs, I would absolutely have FSDs with AS/3s on something like an E39 530i. None of this relates to tracking.
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09-11-2014, 11:18 AM | #29 |
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Love the ride w/Bilstein HD's, stock Msport springs and non-runflat tires. Don't find it harsh at all. Most of the original harshness came from those cursed runflats.
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09-11-2014, 11:56 AM | #31 | |
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I do move right along sometimes. <grin> FSDs place is on the street, and they do that very well, unless you're happier with a track setup even on the street. Which many people are. In that context a slightly rough ride can be part of the fun. |
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09-11-2014, 12:48 PM | #32 | ||
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09-11-2014, 03:30 PM | #33 |
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OP, I have Bilstein HDs with BMW performance springs on my DD and I've found the setup to be great.
Here's a brief write up with pics of ride height difference: http://www.1addicts.com/forums/showp...6&postcount=13 Last edited by cbl117; 09-11-2014 at 06:58 PM.. |
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09-11-2014, 06:24 PM | #34 | |
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A major reason I could recommend FSDs. They're engineered for stock ride height, and Koni recommends against their use with stiffer than stock springs. They're not appropriate for most people who do mods here, but there is a niche for them. |
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09-12-2014, 07:27 AM | #35 | |
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09-12-2014, 09:14 AM | #37 |
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Got a chance to drive a car w KW streets as well as the m3 subframe bushings... wow it felt solid.
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09-12-2014, 10:22 AM | #38 | |
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It's all taste, but I can give you a clue. Stiffer springs and dampers to match, like the KW streets , and M3 bushings, turn the car into a sports car, with a sports car ride. You can tweak the settings, like ride height(if you get coilovers like the KWs) and damping. Stock springs and FSDs and bushing inserts remove the slop that BMW designed in to handle the runflats, giving you a well behaved sport touring car, with a touring car ride. Non-adjustable, but, in my opinion, they're also not necessary for the purpose. Stock spring rates are something like 120/350, BMW performance something like 160/420, KW streets something like 275/575. More clues. It's just a case of how far you want to go, and what ride penalty you want to accept to get there. You might like to read this, even though it's a 3 series. http://www.e90post.com/forums/showthread.php?t=902346 It's all a bit of a gamble, since there are few good objective comparisons like the Tirerack back to back test of yellows and FSDs. Mostly just subjective stuff here from people you don't know, although there are clues about what they value in their posts. Clearly TheStig values ultimate performance more than I do, and I value ride more than he does. Neither of us like the slop you get from a stock BMW these days. Last edited by 128Convertibleguy; 09-12-2014 at 10:54 AM.. |
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09-12-2014, 11:19 AM | #39 |
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Define a track setup. Are they on the same level of MCS and other $3k setups? No but they can certainly hold their own for track days. In fact certain Spec racing series only allow Koni Yellows. I'm pretty sure I could have fun and put down decent times on my near stock 1-er with just Koni Yellows + Dinan or Performance Springs.
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09-12-2014, 11:34 AM | #40 |
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Just thought I'd chime in. I'm running the Michelin Pilot Sport AS/3 tires. Stock sizes. Last weekend In had Koni Yellows and Whiteline RSFB inserts installed. It has made a huge difference. The rear end feels planted now. The car feels much more predictable now. Even small things like switching lanes on the highway feels better. Absolutely no negative impact on ride comfort. I highly suggest these mods.
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09-12-2014, 11:45 AM | #41 |
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Every time I think I know what direction to go with my suspension, I read a thread like this and it makes my head hurt.
I think at this point, going with Koni Yellows or Bilstein HDs are about a wash. For more comfort, go with the Koni FSB's. Now when it comes down to actually choosing which one to buy, I might just flip a coin or go with whatever is the cheapest at the time. |
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09-12-2014, 11:49 AM | #42 | |
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09-12-2014, 12:23 PM | #43 | |
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In this case, anyone who has upgraded to just Koni yellows with the proper adjustment will agree they are just as comfortable as stock. FSDs would be dramatically more comfortable than stock. Bilstein HDs would be slightly less comfortable than stock.
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09-12-2014, 12:31 PM | #44 | |
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A track setup doesn't have to compromise ride quality. |
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