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View Poll Results: Which one do you recommend based on what I'm looking for? | |||
KW Variant 2 | 13 | 44.83% | |
KW Street Comfort | 11 | 37.93% | |
Other brand (please mention it) | 5 | 17.24% | |
Voters: 29. You may not vote on this poll |
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08-17-2013, 11:53 PM | #23 | |
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OP: I've spent a lot of money trying different shock/spring combos. Spend a little extra now for the KW SC and you'll save money in the long run. Based on your stated needs it's a great solution! Leave the rear rebound setting in the middle where KW suggests; you can experiment with the front.
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08-18-2013, 01:42 AM | #24 | |
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08-18-2013, 11:06 AM | #25 | |
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Adding-the rear subframe bushings and shock mounts have a lot to do with the bouncy rear. The coilovers will reduce it but you'll still have rear bounce if you don't address the other two. And yes I set the rear rebound in the middle per KW.
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08-18-2013, 01:44 PM | #26 |
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My rear doesn't bounce on SC's, stock setup. The rear recovers quickly and stays planted. I was planning on doing the rear sub frame bushings with the SC install, but the installer recommended to wait. I am glad I did. No complaints.
If you are not happy, do the rear subframe bushings after. |
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08-19-2013, 11:51 AM | #27 | |
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08-19-2013, 09:11 PM | #28 | |
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08-26-2013, 08:33 AM | #29 |
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Anyone try Ohlins DFV? I'm just curious about it. I know it's far more expensive then V2 and street comfort but I don't really know about it. Any link to the review will be really helpful. I know it might be really good for track and street but remember that I'm only looking for street use. Thanks
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08-26-2013, 08:47 PM | #30 |
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Ohlins is a great damper that requires frequent service. The rear spring rate is too soft and will induce understeer. You can buy stiffer rear springs but then you'd ideally have the rear the shocks revalved for a higher spring rate.
Based on your stated needs KW SC is your best bet. Might want to a bit.
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08-26-2013, 09:13 PM | #31 | |
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08-26-2013, 09:29 PM | #32 | ||||
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You can run 600 lb springs as long as you have a good damper to go with it. Quote:
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TCKling Racing likes to run on the softer side of rates on their race cars. For example it isn't shocking to see 400 lb fronts matched with 500 lb rears. The theory behind it stands that you need some body roll and weight transfer to get weight on the rear tires and get traction. Too stiff and you loose this. Quote:
OP - Linear springs will actually give you a better DD ride, as when you hit a bump the spring rate is constant throughout compression, and you don't get a sudden jerk as you would with progressive springs as they increase rate as you compress the spring. So with progressive springs they could start out at 150 ft-lbs, but at the end of travel they may be at 300 ft-lbs, for example. You can imagine hitting a hard bump, you're going to be relatively soft until you increase the spring rate and you're going to get a sudden jerk once you meet a higher spring rate. |
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08-26-2013, 09:38 PM | #33 |
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One more question, just like other shock absorbers, does KW need frequent rebuild such as every two year? I heard AST and other brands required rebuild every two year to keep the shock at its best in absorbing shock.
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08-26-2013, 09:42 PM | #34 | |
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It is is pretty stiff with these springs but not overly harsh due to the quality of the dampers. |
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08-26-2013, 10:01 PM | #35 | |
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best answer would be to contact KW and ask how long they guarantee their shocks before rebuild. @Nugget - that is really soft for a car this size and weight. the dampers really do make the worlds difference, especially with higher spring rates |
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08-26-2013, 10:16 PM | #36 | |||||
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08-26-2013, 11:00 PM | #37 |
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^ I'm trying to help you avoid the money flush I've been through the past few years. I had Koni sports with OE sport and BMW PS springs-both linear. The KW SC handles better and has more ride comfort, period. KW SC has linear rate springs-286/572. You want to stay under 600 lb rear springs with OE subframe bushings. KW has a lifetime warranty on their products; damper service intervals are comparable to Koni with superior valving.
http://www.e90post.com/forums/showthread.php?t=843617
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08-26-2013, 11:57 PM | #38 | |
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08-27-2013, 12:31 AM | #39 |
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Oh. I assumed they used the same linear springs for E8x as E9x.
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08-27-2013, 12:35 AM | #40 | |
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08-27-2013, 06:50 AM | #41 | ||
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You need a damper that can match a selected spring rate. This is why most coilover kits seem to work really well, as that damper was engineered to work with the selected spring rate. I don't track my E82, however I do with my E86. I've been jumping back and forth about getting a Dual Adjustable Coilover set-up, but it is too much money right now (as I'm looking at close to $3k with camber plates). I was going to end up with 500 lb fronts and 600 lb rear. But of course this is a totally different car. For a DD with no future of track/autox I'd lean towards a soft set-up. I've been trying to look at the OEM spring rates, but I'm assuming they are around 150-270 lbs in the front and 200-400 lbs rear? For someone who just wants to drive the car, go with an engineered set-up. You're going to spend some money on different spring set-ups to determine what you like and how the car responds. Quote:
The KW is actually a top-notch damper. I've know a local guy who drives a FRS in STX for SCCA. He is a national champion, and has driven Subaru Impreza, Mitsubishi Evo...etc. He has had Moton Dampers, AST Dampers...and he prefers the KWs over the other, more expensive dampers. I thought my E82 springs were linear, interesting. Didn't know BMW ever produced production vehicles with linear springs. Anyone know the OEM and PS Spring rates? |
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08-27-2013, 07:11 AM | #42 | |
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I don't really know about the spring rate of oem but bimmer mag discussed BMW 128i coupe together with TC Kline and that car has sport suspension (sport suspension on 128i and 135i should be the same), so the link below might help you. http://www.bimmer-mag.com/issues/101...2#.UhyWx2Ssh1M Kline recommends to use 350 spring rate at the rear for daily driven car due to stock bushing limitation but it's all up to us and depends on our needs.
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08-27-2013, 10:35 AM | #43 |
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Yes because the damper is valved for the springs and is superior to Koni in comfort and handling.
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08-27-2013, 09:49 PM | #44 |
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Great! I'm curious about Ohlins so I'm asking hpa right now just to compare it with KW SC. So far KW SC is my choice for the best price and comfort. Thanks
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