09-15-2017, 05:53 AM | #1 |
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M Performance LSD vs. Coilovers - Better way to spend $2000?
2015 F32 435i M Sport, RWD, 8AT, Adaptive M Suspension
Daily driver, occasional autocross, maybe once/yr track in future Debating M Performance LSD vs. KW Street Comfort coilovers. Both are about $2000 + $500 install (rough numbers). Which is the better bang for buck? Which will make the greater difference in overall handling and feel? Last edited by dr.roro; 09-15-2017 at 08:35 AM.. |
09-15-2017, 08:05 AM | #2 | |
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I believe the M Performance LSD made the bigger difference. Replace your suspension when your original ones are worn out. I think it's a not a great use of money to replace a wear/tear item prior to the completion of its usable life. |
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09-15-2017, 08:14 AM | #3 | |
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I drive my car hard with occasional track days. My car put down 473wtrq and i don't have too many problems with traction or power distribution even when pushing it. I plan on eventually picking up an LSD, but for now I'm very happy with the setup... suspension will help with traction/power distribution as well. I vote coil overs.
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09-15-2017, 08:41 AM | #4 | ||
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When would you expect stock suspension to be due for replacement? How long do you expect the M Performance LSD to last given it is a mechanical clutch-type LSD? What is your plan for rebuilding or replacing it when it reaches end of life? Quote:
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09-15-2017, 10:48 AM | #5 |
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I do not have either choice but have m-perf. susp.
The lsd is realized mostly while pushing the car during sporty or greater driving. The best bang for buck would have to be the suspension as it is realized all the time. From daily driving to track and even while its parked (appearance). So you're willing to give up adaptive if you get susp? Are street comfort better than v2 for your needs? |
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09-15-2017, 03:18 PM | #6 | |||
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I don't know how someone with > 400 ft-lbs of torque is not spinning their tires exiting corners with an open differential. I don't have any trouble spinning the inside tire with a completely stock powertrain and a square 255/40/18 Michelin Pilot Sport setup. I do about 4-6 HPDE events per year. |
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enjoythemusic364.00 F30_SixSpeed1170.50 |
09-15-2017, 07:20 PM | #8 |
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I have both Brids auto LSD and coilover in my F30.
I do suggest a coilover first, then LSD thereafter. I might even venture to say get a slightly cheaper coilover (e.g. ST suspension) and do it together. These two items on their own, or together, make a salient difference in handling so should not be missed. |
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09-16-2017, 01:55 AM | #9 |
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I too think suspension is the most dramatic improvement you can get - and don't go cheap on it - although LSD is a solid second step.
I've got the KW DDC coilovers and Quaife LSD and like them both very much.
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09-16-2017, 06:07 AM | #10 | |||
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It sounds like the people who advocate coilovers/suspension first instead of LSD don't do that many track events. Otherwise, they'll be losing their minds when trying to accelerate a corner and have either the DSC system robbing them of power or the rear of the car won't feel nearly as settled and controllable out of a corner on full throttle. |
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09-16-2017, 09:58 AM | #12 |
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Also, if you're RWD, don't bother with anything else other than:
1. BMW M Performance Suspension Kit. The kit includes all the accessories that you need to do a proper install such as new top mounts, bolts, etc. Kit + springs: https://getbmwparts.com/partlocator/...catalogid=4462. Replacement struts + accessories: https://getbmwparts.com/parts/index....&siteid=214672 which is only $600. 2. Ohlins Road and Track - It's only ~$2300 http://www.hpashop.com/Ohlins-RT-F3x...ins-RT-F3x.htm I don't really see the point of KW, Bilstein, any other suspension mod other than those 2. |
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09-16-2017, 01:02 PM | #13 | ||
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I've never thought of suspension as a wear item? - Stiffer springs and dampers results in less body roll - Lowered car results in better handling thanks to increased negative camber and lower center of gravity. So i'm keeping the OEM suspension in my garage to replace the KW when they're worn out instead. Quote:
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09-17-2017, 09:22 PM | #14 | |
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09-18-2017, 12:06 AM | #15 | ||
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09-18-2017, 07:40 AM | #16 | |
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It requires a special tool. I've looked into doing it with standard pry bars but I'm not convinced it would work. Go over to the N55 powertrain sub-forums and read the sticky thread on the LSD. |
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09-18-2017, 09:11 AM | #17 |
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OP, if this is your daily driver, from my experience (RWD and AWD), I'd definitely go with upgrading your suspension first vs. LSD for the most bang with regard to handling and road feel. In search for my own suspension upgrades, I've heard only good things about KW Street Comfort coilovers.
With this logic, it makes no sense not to go with Ohlins on the RWD F3X given the time and effort required for any suspension upgrade. Last edited by NWest; 09-18-2017 at 09:33 AM.. |
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09-18-2017, 01:35 PM | #18 | |
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BMW M Performance Suspension Kit (which includes ~$600 work of accessories): $1500 Ohlins (~$2300) + new accessories (top hats, bolts, nuts, etc) $600 = ~$3000 |
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09-18-2017, 07:22 PM | #20 | |
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09-18-2017, 07:34 PM | #21 | |
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09-18-2017, 08:08 PM | #22 | |
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