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      05-05-2016, 02:58 AM   #1
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Help Needed: M-Performance suspension or coil-overs?

I need to upgrade my 2013 F30 335i Sport line suspension with something stiffer and something that would improve the handling and road feel of the too comfortable car. I don't think I would be adjusting the coil-over dampening and rebound on regular basis if I get one with those adjustments. I am looking for something that I can install and forget as I don't have much experience and knowhow about car suspension systems and coil-overs. To give you an idea of what I am looking for, I want the ride and feel like E90 or even better E90 or F80 M3. Is it possible to achieve that kind of stiffness, handling and road feedback with suspension upgrade? I have the Continental ContiSportContact 5 SSR summer performance run-flats that came with my F30 and I plan on keeping them (vs replacing with Michelin Super Sports).

I have shortlisted the following:

1) M-performance suspension
2) Coil-overs:
- KW (Not sure which version to get out of v1, v2 or v3)
- Bilstein B14

I am looking to spend around $1500 including install. Is this reasonable? I searched and found that M-perf suspension itself costs $1500 without install. Any discounts or deals on that?

Also, any recommended shops which do good installation and reasonable prices in San Francisco Bay Area?

Thanks for taking time to read my post
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      05-05-2016, 11:54 AM   #2
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Quote:
Originally Posted by 3SeriesDriver View Post
How is the ride quality with m-performance suspension? Would you rate the stiffness and handling as good as E90 suspension, E90 M3 suspension or F80 M3 suspension or below these three, if you have driven or sat in any of these generation cars?

I don't have much experience with m-perf or various coilovers but I am pretty sure, I would not keep on adjusting the coilovers on regular basis if I install one. I just want a system which I can install and forget. Also, is it possible to get m-perf suspension cheaper than $1500 as its been few years since it came out?

Lastly, how much did you end up paying for the installation? Dealer or other shop?

Thanks!
this is my 1st bimmer. the ride is a bit firmer but the handling is much much better than the m-sport suspension. i have not seen it cheaper than $1500. a long time friend put the top hats on the fronts and installed everything in about 3 hours. after install, the left rear camber was 0.1 out of spec and everything remained in spec.

if you go coils ohlins and ast are the top of the line but cost quite a bit. even KW will cost you more than M-Perf.

if you don't mind that the drop is just 10mm i highly recommend it
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Last edited by alohasurftoad; 05-05-2016 at 12:04 PM.
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      05-05-2016, 01:20 PM   #3
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Quote:
Originally Posted by 3SeriesDriver View Post
I need to upgrade my 2013 F30 335i Sport line suspension with something stiffer and something that would improve the handling and road feel of the too comfortable car. I don't think I would be adjusting the coil-over dampening and rebound on regular basis if I get one with those adjustments. I am looking for something that I can install and forget as I don't have much experience and knowhow about car suspension systems and coil-overs. To give you an idea of what I am looking for, I want the ride and feel like E90 or even better E90 or F80 M3. Is it possible to achieve that kind of stiffness, handling and road feedback with suspension upgrade? I have the Continental ContiSportContact 5 SSR summer performance run-flats that came with my F30 and I plan on keeping them (vs replacing with Michelin Super Sports).

I have shortlisted the following:

1) M-performance suspension
2) Coil-overs:
- KW (Not sure which version to get out of v1, v2 or v3)
- Bilstein B14

I am looking to spend around $1500 including install. Is this reasonable? I searched and found that M-perf suspension itself costs $1500 without install. Any discounts or deals on that?

Also, any recommended shops which do good installation and reasonable prices in San Francisco Bay Area?

Thanks for taking time to read my post
First, you're going to have to accept that it is not economically practical to get a F3x platform to handle the same way a F8x platform would handle.

M Performance Suspension will cost you $1500. Any suspension install is going to involve a substantial number of labor hours. Fortunately, you already have the Sport suspension anti-roll bars. Otherwise, the labor cost could conceivably be more than that actual parts cost.

Also, I'd highly recommend you replace your tires (when they wear out eventually) with a better tire such as a Michelin PSS.

As far as set it and forget it, M Performance Suspension is the way to go.
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      05-05-2016, 01:55 PM   #4
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@alohasurftoad, thanks for your reply. I actually don't mind the 10mm drop; I just want a firm ride and handling that a BMW "sports sedan" *should* have from the factory.

@Polo08816, I understand your point and you are right. If I can at least bring my F30 335i to E90 335i levels in terms of stiffness and road feedback, I would be more than happy.

Looks like I would need to shop around for M-Performance Suspension!
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      05-05-2016, 08:25 PM   #5
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Any lowering option is going to cause you pain if you are keeping the run flats. They are brutal with lowering springs or coil overs. I couldn't wait to get mine off on both my E90 and this F30.
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      05-05-2016, 08:27 PM   #6
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Quote:
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Any lowering option is going to cause you pain if you are keeping the run flats. They are brutal with lowering springs or coil overs. I couldn't wait to get mine off on both my E90 and this F30.
That is what I have heard but at least I can install the suspension/coilovers first and then I can install non-RFT after they wear out if I find them too brutal.
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      05-05-2016, 09:14 PM   #7
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Quote:
Originally Posted by SLOWER View Post
Any lowering option is going to cause you pain if you are keeping the run flats. They are brutal with lowering springs or coil overs. I couldn't wait to get mine off on both my E90 and this F30.
I never really noticed it at first, but now that I put my rfts back on (winter tires are go flats) I realize how stiff they are and how much they rattle the car. Sounds like my car is going to fall apart when I go over bumps or road joints.
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      05-06-2016, 01:16 PM   #8
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What are your thoughts on Bilstein B14 coilovers? The images from this thread looks good; just don't know about the ride quality
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      05-06-2016, 02:22 PM   #9
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Quote:
Originally Posted by 3SeriesDriver View Post
What are your thoughts on Bilstein B14 coilovers? The images from this thread looks good; just don't know about the ride quality
looks good. FYI, the min drop is 30mm (1-1-4"). if you are DIY, i would do is buy components such as strut mounts(top hats), nuts etc so that you can assemble the coilovers complete off the car and make the swap. instead of taking out the old struts, spring compressing, swapping the strut mounts.

if you're sending it out then i suppose it doesn't matter, though.
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      05-06-2016, 05:08 PM   #10
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Quote:
Originally Posted by 3SeriesDriver View Post
I need to upgrade my 2013 F30 335i Sport line suspension with something stiffer and something that would improve the handling and road feel of the too comfortable car. I don't think I would be adjusting the coil-over dampening and rebound on regular basis if I get one with those adjustments. I am looking for something that I can install and forget as I don't have much experience and knowhow about car suspension systems and coil-overs. To give you an idea of what I am looking for, I want the ride and feel like E90 or even better E90 or F80 M3. Is it possible to achieve that kind of stiffness, handling and road feedback with suspension upgrade? I have the Continental ContiSportContact 5 SSR summer performance run-flats that came with my F30 and I plan on keeping them (vs replacing with Michelin Super Sports).

I have shortlisted the following:

1) M-performance suspension
2) Coil-overs:
- KW (Not sure which version to get out of v1, v2 or v3)
- Bilstein B14

I am looking to spend around $1500 including install. Is this reasonable? I searched and found that M-perf suspension itself costs $1500 without install. Any discounts or deals on that?

Also, any recommended shops which do good installation and reasonable prices in San Francisco Bay Area?

Thanks for taking time to read my post
Greetings. I have the same year/make/model and also looking for a suspension upgrade as well. As a first step, I'm going to buy and install the KW V3's on my Porsche 911 to see if I like them (getting rid of H&R lowering springs) and if they are good, I'll also purchase/install on the F30. Of all the research I've done including owner feedback, I'm going the KW V3 coilover route instead of Bilstein PSS 10.

To cut down your choices based on price point, you cannot get into V3s on an F30 in your price range. You are also a few $ hundred out on the PSS10's, V1 and V2's. I think, based on your install and forget plan, you should opt for the M Performance suspension; $1500, or as I found $1600 out the door from Tischer BMW in Maryland.
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      05-08-2016, 04:13 PM   #11
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Quote:
Originally Posted by daberlin View Post
Greetings. I have the same year/make/model and also looking for a suspension upgrade as well. As a first step, I'm going to buy and install the KW V3's on my Porsche 911 to see if I like them (getting rid of H&R lowering springs) and if they are good, I'll also purchase/install on the F30. Of all the research I've done including owner feedback, I'm going the KW V3 coilover route instead of Bilstein PSS 10.

To cut down your choices based on price point, you cannot get into V3s on an F30 in your price range. You are also a few $ hundred out on the PSS10's, V1 and V2's. I think, based on your install and forget plan, you should opt for the M Performance suspension; $1500, or as I found $1600 out the door from Tischer BMW in Maryland.
Thanks daberlin for your advice! Was the "$1600 out the door" quote for parts and installation? getBMWParts lists the suspension itself at $1500.

Also, just curious, what is your opinion on Bilstein B8 struts and Eibach/H&R springs combo? Seems to be less expensive than the M-Performance suspension considering that eventually, M-Perf is also a struts-spring combo in itself except that it is BMW tuned.
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      05-08-2016, 08:28 PM   #12
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Quote:
Originally Posted by 3SeriesDriver View Post
Thanks daberlin for your advice! Was the "$1600 out the door" quote for parts and installation? getBMWParts lists the suspension itself at $1500.

Also, just curious, what is your opinion on Bilstein B8 struts and Eibach/H&R springs combo? Seems to be less expensive than the M-Performance suspension considering that eventually, M-Perf is also a struts-spring combo in itself except that it is BMW tuned.
It's definitely not $1600 for parts and installation. Parts are $1595 on getBMWParts alone.

That Bilstein combo is less expensive than that M Performance Suspension but no one here will say it's a better matched pair than the MPS. There are plenty of Bilstein/H&R fails on the forums from basically mismatched springs/struts.
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      05-09-2016, 12:06 AM   #13
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It will be very difficult to stay within $1,500 budget, including installation. Since your goals are reasonable, take a look at KW Street Comfort coilovers.

www.allshocks.com has very attractive prices. KW Street Comfort and V1 are approx. $1,500 at allshocks.com. V2 are more expensive, nearing $1,800.

Last edited by cfm56d7b; 05-09-2016 at 12:11 AM.
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