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      05-14-2020, 01:32 AM   #1
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M Performance VS KWv3

Still torn between both suspension systems since I can get them at nearly the same price point.

Does anyone see any major pros/cons for them?

I'll be using them on my daily driver, the height adjustment on both meet my requirements.

Mainly getting them for the flush suspension look but the upgraded suspension should be nice. I have never had upgraded suspension so I'm not sure the advantages when driving.
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      05-14-2020, 03:40 AM   #2
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If both are available at the same $$$, OEM MPerf kit will retain OEM robust warranty whereas KW only warrant their kit not any consequential failure of surrounding parts ie top mounts/joints etc.

I believe spring rates on MPerf kit is slightly softer than KWV3 too.

I run MPerf kit on my m2 and very happy as DD + ~6TD's pa
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      05-14-2020, 07:08 AM   #3
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Quote:
Originally Posted by Bee Pee View Post
I believe spring rates on MPerf kit is slightly softer than KWV3 too.
I was under the impression that it was just the opposite. Hmmm. One of the biggest reasons I was going to go with the KW kit myself is because it's the same spring rate as stock, which, to my knowledge is less stiff than the M Performance.

Maybe someone that knows can chime in here. I've LONG wanted to soften this car up just a bit.
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      05-14-2020, 07:13 AM   #4
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Well, the rear on the V3 uses a shorter main spring than the MPS, which would tend to suggest a higher rate.

Plus the V3 can - according to the installation instructions - be adjusted lower than the MPS. Which also tends to suggest a higher rate spring.
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      05-14-2020, 07:58 AM   #5
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I ordered my M2C ex dealer with the MPE coil over installed. Luckily I was offered the chance to have a look at it prior to installation. You can clearly notice the effort made by the involvement of BMW to prevent rattle/noises. This confirmed my decision to not go for Öhlins. It's my daily after all. After 8000km on the odo, I have to say I am really impressed on the boost in overall performance this kit gives you, icw the MPE lightweight wheels and PS Cup2 tires.
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      05-14-2020, 04:06 PM   #6
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Quote:
Originally Posted by VisualEcho View Post
I've LONG wanted to soften this car up just a bit.
Me too. It’s not the large bumps that bother me, but rather small, closely-spaced surface irregularities that seem to unsettle this car. It doesn’t inspire confidence because it feels like it’s tripping over itself on uneven surfaces. Seems to need more compliance to find more grip and confidence. It may be great on a smooth track surface, but on real-world roads it’s far from ideal.
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      05-14-2020, 04:43 PM   #7
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I'm currently running with 2 clicks less than BMW's recommended road settings for both C&R, F&R. The spring rates are higher than stock (as evidenced by low speed poor surface ride) but otherwise, it's an improvement on both low (undulations) and high (cats eyes and rumble strips) frequency bumps.

HTH
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      05-18-2020, 11:39 AM   #8
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I'm in the same boat... seems M Performance are the way to go.
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      05-18-2020, 11:42 AM   #9
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Quote:
Originally Posted by M2C89 View Post
I'm in the same boat... seems M Performance are the way to go.
Haha, everyday I hear one way or another from people i message/ask. I think at the end of the day they will be equally just a good. It seems like if you want warranty or OEM fitment guarantee, go with M Perf. If you want more adjustability with height and potentially a better lifetime warranty on parts/rebuild capabilities from KW then go with KW. I hear people get their suspension rebuilt by KW x0,000 miles down the road and then continue to rock them for over 100,000 miles.

Edit: I'm most likely going to get KWv3 based on conservations I have had with people in DM's and from what I have read in other threads.
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      05-18-2020, 11:48 AM   #10
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I have V3s and they are much more composed than stock. Still trying to dial them in with new, bigger tires and camber plates but they're quality kit overall.

Only negative so far is the need to remove rear spring to adjust rear height. There are those that have had success using lube and/or cutting notches to adjust on the car but ymmv.

I got a smoking deal on these or I would have probably gone with Bilstein PSS.
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      05-18-2020, 12:03 PM   #11
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The rear coils on the KW have more adjustability to go lower than MPE rear coils).

I heard a lot of reports that the front KW V3 coils have some clunking when turning at low speeds. Also KW customer service does not seem that great if you get issues down the line.

I noticed that the MPE suspension has a isolator boot between the front coil and adjustment collar. The KW V3 does not, could this be the reason for the clunking? I am not 100 percent certain this is the case.

Few months ago I got a quote for $1,9XX shipped to my door for the MPE suspension from Sun Motors. If any vendor has the same price let me know!
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      05-18-2020, 12:06 PM   #12
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Quote:
Originally Posted by chmura View Post
The rear coils on the KW have more adjustabiliy (can go lower than MPE rear coils).

I heard a lot of reports that the front KW V3 coils have some clunking when turning at low speeds. Also KW customer service does not seem that great if you get issues down the line.

I noticed that the MPE suspension has a isolator boot between the front coil and adjustment collar. The KW V3 does not, could this be the reason for the clunking? I am not 100 percent certain this is the case.
I have also heard from people who have had zero issues which makes me think it comes down to installation error. Not 100% sure either and this is the deciding factor for me. It's nice to know M Perf doesn't make the noise but also how much am I willing to risk the noise for more KW height adjustability.
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      05-18-2020, 12:20 PM   #13
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Quote:
Originally Posted by Detoxified View Post
I have also heard from people who have had zero issues which makes me think it comes down to installation error. Not 100% sure either and this is the deciding factor for me. It's nice to know M Perf doesn't make the noise but also how much am I willing to risk the noise for more KW height adjustability.
That is true, there are a lot of installation errors. I installed my buddies MPE suspension myself in my garage. While searching how to install the MPE suspension I noticed that 2 members on here installed the rear coilovers wrong.
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      05-19-2020, 03:01 PM   #14
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I have a positive experience with KW V3s, no clunks or anything for 7k miles. I thought it was the KWs but it turns out it was something else entirely.
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      05-19-2020, 03:12 PM   #15
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I also have KW V3 and they've been solid, no noises or clunks. The rears initially needed to remove spring to adjust but now that it's been a few thousand miles they actually can be adjusted without removed (the perch is just locked into place better). No regrets since I got a great deal and they are lifetime warranty, but if putting on a brand new car or something with decent warranty left, I'd go with the M-performance ones to maintain the warranty. I had a bad top mount (before coils) that had to be warranty replaced and if I had M performance it would have been fixed where KW they would have told me to pound sand.
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      05-24-2020, 09:34 AM   #16
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Quote:
Originally Posted by chmura View Post
The rear coils on the KW have more adjustability to go lower than MPE rear coils).

I heard a lot of reports that the front KW V3 coils have some clunking when turning at low speeds. Also KW customer service does not seem that great if you get issues down the line.

I noticed that the MPE suspension has a isolator boot between the front coil and adjustment collar. The KW V3 does not, could this be the reason for the clunking? I am not 100 percent certain this is the case.

Few months ago I got a quote for $1,9XX shipped to my door for the MPE suspension from Sun Motors. If any vendor has the same price let me know!
Was Brian who quoted you the price from sun motor? I know he has retired and we are not getting whole sale price any longer. So far cheapest I found is $2197 shipped.
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      05-24-2020, 10:06 AM   #17
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Quote:
Originally Posted by chmura View Post
The rear coils on the KW have more adjustability to go lower than MPE rear coils).

I heard a lot of reports that the front KW V3 coils have some clunking when turning at low speeds. Also KW customer service does not seem that great if you get issues down the line.

I noticed that the MPE suspension has a isolator boot between the front coil and adjustment collar. The KW V3 does not, could this be the reason for the clunking? I am not 100 percent certain this is the case.
The MPS also has a rubber isolator on the rear spring. I was tempted to leave them off as the plastic cup they sit in is the same shape (and doing so would give a bit more adjustment).
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      05-24-2020, 10:14 PM   #18
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Quote:
Originally Posted by m20e3087 View Post
Was Brian who quoted you the price from sun motor? I know he has retired and we are not getting whole sale price any longer. So far cheapest I found is $2197 shipped.
Yes Brian is the one who quoted me a few months ago.
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      05-25-2020, 09:07 AM   #19
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Quote:
Originally Posted by chmura View Post
Quote:
Originally Posted by m20e3087 View Post
Was Brian who quoted you the price from sun motor? I know he has retired and we are not getting whole sale price any longer. So far cheapest I found is $2197 shipped.
Yes Brian is the one who quoted me a few months ago.
We need to find a new parts rep who can sale at wholesale.
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      05-25-2020, 09:52 AM   #20
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Well both systems are double tube design - heavier and prone to overheat if you track. Why not for small increase to go to mono tube inverted Ohlins R&T or AST 5100? 😉👍
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      05-25-2020, 11:26 AM   #21
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coilovers

BMW of long beach has 20% discount on m performance parts at the moment if you decide to buy the suspenssion.

Good Luck
Nick


Quote:
Originally Posted by Detoxified View Post
Still torn between both suspension systems since I can get them at nearly the same price point.

Does anyone see any major pros/cons for them?

I'll be using them on my daily driver, the height adjustment on both meet my requirements.

Mainly getting them for the flush suspension look but the upgraded suspension should be nice. I have never had upgraded suspension so I'm not sure the advantages when driving.
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      05-25-2020, 12:27 PM   #22
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Any good reason to get KW V4?

Is it difficult to setup properly with that many variables?

Any reviews?
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