F30 Need more comfort and less harsh (now b8+eibach)

cola.p · 11-26-2016, 06:58 PM

I have installed Bilstein b8 and Eibach spring (b12) for my F30 for 2 months. My tires are 18" Hankook v12 evo2 225/45/18. I feel very good except the harsh and feel uncomfortable when drive under 50mph. Drive at high speed is superb. Then I need more comfort and less harsh.

After a short research, I have ideas

b6 + ACS
b6 + Eibach -> I can use the existing spring
Koni fsd + Eibach -> I can use the existing spring
Koni yellow + Eibach -> I can use the existing spring
b8 + H&R -> I can use the existing shock but H&R spring i'm afraid it's too low for me. Eibach height is perfect for me.

Do you guys have any idea of upgrade? Pleas suggest.

Thank you very much.

RedKloud · 11-26-2016, 07:47 PM

Decrease your tire pressures by 3-5 PSI.

cola.p · 11-27-2016, 05:14 AM

Quote:

Originally Posted by RedKloud

Decrease your tire pressures by 3-5 PSI.

Thank you. I've just tried decresing the tire pressure this morning. It help!! more comfort.

Forgiven · 11-27-2016, 10:24 AM

235/50/17 will help your ride also. Decrease your wheel size with taller tires.

Cammy5 · 11-27-2016, 11:51 AM

I've ordered the Dinan Sport springs with the custom "ride and handling kit" (revised bumpstops) to pair with Bilstein B8s front and rear.

RedKloud · 11-27-2016, 12:23 PM

Quote:

Originally Posted by Cammy5

I've ordered the Dinan Sport springs with the custom "ride and handling kit" (revised bumpstops) to pair with Bilstein B8s front and rear.

You actually don't need the Dinan bump stops for B8s, they are already shorter than stock shocks.

Polo08816 · 11-27-2016, 04:42 PM

Quote:

Originally Posted by cola.p

I have installed Bilstein b8 and Eibach spring (b12) for my F30 for 2 months. My tires are 18" Hankook v12 evo2 225/45/18. I feel very good except the harsh and feel uncomfortable when drive under 50mph. Drive at high speed is superb. Then I need more comfort and less harsh.

After a short research, I have ideas

b6 + ACS
b6 + Eibach -> I can use the existing spring
Koni fsd + Eibach -> I can use the existing spring
Koni yellow + Eibach -> I can use the existing spring
b8 + H&R -> I can use the existing shock but H&R spring i'm afraid it's too low for me. Eibach height is perfect for me.

Do you guys have any idea of upgrade? Pleas suggest.

Thank you very much.

Have you tried filling your tires with water instead of air? I've always felt that water beds are more comfortable than air mattresses. The same should apply here.

Dmitry83 · 11-29-2016, 11:15 AM

Don't exceed 2,1bar front & 2,3bar rear with 225/45/18 all round in cold condition.

cola.p · 11-30-2016, 06:02 AM

After researched more, I think I will go for Dinan spring instead of changing shock.

T4NZ4NIT3 335i · 11-30-2016, 10:21 AM

Bilstein b4 are also an option

RedKloud · 11-30-2016, 10:44 AM

Quote:

Originally Posted by cola.p

After researched more, I think I will go for Dinan spring instead of changing shock.

I don't think changing springs only will improve comfort. B8 are much stiffer shocks than stock.

M47 · 11-30-2016, 12:51 PM

Quote:

Originally Posted by cola.p

I have installed Bilstein b8 and Eibach spring (b12) for my F30 for 2 months. My tires are 18" Hankook v12 evo2 225/45/18. I feel very good except the harsh and feel uncomfortable when drive under 50mph. Drive at high speed is superb. Then I need more comfort and less harsh.

After a short research, I have ideas

b6 + ACS
b6 + Eibach -> I can use the existing spring
Koni fsd + Eibach -> I can use the existing spring
Koni yellow + Eibach -> I can use the existing spring
b8 + H&R -> I can use the existing shock but H&R spring i'm afraid it's too low for me. Eibach height is perfect for me.

Do you guys have any idea of upgrade? Pleas suggest.

Thank you very much.

Have you consider getting coilovers?

cailas · 11-30-2016, 03:26 PM

Quote:

Originally Posted by cola.p

I have installed Bilstein b8 and Eibach spring (b12) for my F30 for 2 months. My tires are 18" Hankook v12 evo2 225/45/18. I feel very good except the harsh and feel uncomfortable when drive under 50mph. Drive at high speed is superb. Then I need more comfort and less harsh.

After a short research, I have ideas

b6 + ACS
b6 + Eibach -> I can use the existing spring
Koni fsd + Eibach -> I can use the existing spring
Koni yellow + Eibach -> I can use the existing spring
b8 + H&R -> I can use the existing shock but H&R spring i'm afraid it's too low for me. Eibach height is perfect for me.

Do you guys have any idea of upgrade? Pleas suggest.

Thank you very much.

Can you post some photos of your car?

cola.p · 11-30-2016, 06:41 PM

Quote:

Originally Posted by cailas

Can you post some photos of your car?

Here are my car pics.
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cola.p · 11-30-2016, 06:43 PM

Quote:

Originally Posted by M47

Have you consider getting coilovers?

I think it's too expensive. If it's the only choice, I may go for that.

bheng89 · 12-02-2016, 10:41 AM

I vote for Koni Yellow. I had them on a previous vehicle and was able to adjust the stiffness of the ride to some degree. Softer when driving around in a city with potholes and stiffer for the backroads.

Both adjustments were made on the top of the tubes; however, I am unsure where the adjustment knobs would be for the f30.

cola.p · 12-02-2016, 10:52 AM

I can't find Dinan spring here in Thailand. Finally, I end up with D2 RS (coilovers). I've just bought and installed today. After 30-40km ride, it was much more comfort than B12 and no harsh but still stiff (a bit less than B12). Overall, I'm happy with this setup. Here the price of D2 set is cheaper than B12.

PS. the mechanic guy adjusted the damping to about 55% of the most stiff (it's adjustable).

cdgatti · 12-04-2016, 06:04 AM

Don't install aftermarket "Performance" suspension systems if you want a "Factory" comfort ride. BMW engineers work literally thousands of hours to make your ride fit the majority of customers where comfort with a little bit of sport is offered. You went to a system where Bilstein spent alot less time with people that are not BMW suspension experts, they have to be experts on all systems, to design a system that significantly improves the sport aspect of your car with as minimal as possibly comfort sacrifice. You fit into the category that cannot accept that little comfort sacrifice. From the E90 forums we have been having this conversation there for many years now. The only system that gains a little performance but gives up the least comfort is the KW Street Comfort coilover system. Either man up on the comfort side, try the KW system or go back to stock. Good Luck with your suspension quest - but remember it is very difficult to do better than what the BMW engineers have given you for all around comfort and performance.

cailas · 12-06-2016, 01:02 PM

Quote:

Originally Posted by cola.p

Quote:

Originally Posted by cailas

Can you post some photos of your car?

Here are my car pics.
Attachment 1534807

Attachment 1534808

Attachment 1534809

Thanks,is it rwd or xdrive?

cola.p · 12-07-2016, 02:07 AM

Quote:

Originally Posted by cailas

Thanks,is it rwd or xdrive?

It's RWD.

11-26-2016, 06:58 PM	#1
cola.p Private 32 Rep 69 Posts Drives: BMW 530e G30 Join Date: Nov 2016 Location: Bangkok, Thailand iTrader: (0)	F30 Need more comfort and less harsh (now b8+eibach) I have installed Bilstein b8 and Eibach spring (b12) for my F30 for 2 months. My tires are 18" Hankook v12 evo2 225/45/18. I feel very good except the harsh and feel uncomfortable when drive under 50mph. Drive at high speed is superb. Then I need more comfort and less harsh. After a short research, I have ideas b6 + ACS b6 + Eibach -> I can use the existing spring Koni fsd + Eibach -> I can use the existing spring Koni yellow + Eibach -> I can use the existing spring b8 + H&R -> I can use the existing shock but H&R spring i'm afraid it's too low for me. Eibach height is perfect for me. Do you guys have any idea of upgrade? Pleas suggest. Thank you very much.
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11-26-2016, 07:47 PM	#2
RedKloud Major 736 Rep 1,261 Posts Drives: BMW i4 M50 Join Date: Jan 2016 Location: Portland, OR iTrader: (0)	Decrease your tire pressures by 3-5 PSI.
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11-27-2016, 10:24 AM	#4
Forgiven Lieutenant 122 Rep 586 Posts Drives: 22, X5 45e Join Date: Feb 2013 Location: D.C. iTrader: (0)	235/50/17 will help your ride also. Decrease your wheel size with taller tires. __________________ G05 - M Performance roof spoiler
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11-27-2016, 11:51 AM	#5
Cammy5 First Lieutenant 159 Rep 397 Posts Drives: 2016 BMW 328i M Sport 6MT Join Date: Oct 2016 Location: Raleigh, NC iTrader: (6)	I've ordered the Dinan Sport springs with the custom "ride and handling kit" (revised bumpstops) to pair with Bilstein B8s front and rear. __________________ 2016 BMW 328i M Sport 6MT (Mineral Grey over Coral Red) BPC DME Custom Stage 1 Tune Evolution Racerwerks Competition Intercooler & Chargepipe *M Performance Big Brake Kit
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11-29-2016, 11:15 AM	#8
Dmitry83 Second Lieutenant 54 Rep 258 Posts Drives: F30 320i (328i ECU) M-Sport Join Date: May 2012 Location: Rostov-on-Don, Russia iTrader: (0)	Don't exceed 2,1bar front & 2,3bar rear with 225/45/18 all round in cold condition. __________________ '13 F30 320i (328i ECU) RWD M-Sport Michelin PSS, M-Sport brakes, 320i LCI muffler F32 bottom V-bar F80 bottom reinforcement plate Koni Sport, M-Performance springs, M135i Anti-roll bars
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11-30-2016, 06:02 AM	#9
cola.p Private 32 Rep 69 Posts Drives: BMW 530e G30 Join Date: Nov 2016 Location: Bangkok, Thailand iTrader: (0)	After researched more, I think I will go for Dinan spring instead of changing shock.
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11-30-2016, 10:21 AM	#10
T4NZ4NIT3 335i Second Lieutenant 90 Rep 205 Posts Drives: 2013 BMW 335i xdrive Sportline Join Date: Nov 2015 Location: Canada iTrader: (0)	Bilstein b4 are also an option
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12-02-2016, 10:41 AM	#16
bheng89 Second Lieutenant 79 Rep 270 Posts Drives: 2012 328xi Join Date: Sep 2016 Location: KY iTrader: (0)	I vote for Koni Yellow. I had them on a previous vehicle and was able to adjust the stiffness of the ride to some degree. Softer when driving around in a city with potholes and stiffer for the backroads. Both adjustments were made on the top of the tubes; however, I am unsure where the adjustment knobs would be for the f30.
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12-02-2016, 10:52 AM	#17
cola.p Private 32 Rep 69 Posts Drives: BMW 530e G30 Join Date: Nov 2016 Location: Bangkok, Thailand iTrader: (0)	I can't find Dinan spring here in Thailand. Finally, I end up with D2 RS (coilovers). I've just bought and installed today. After 30-40km ride, it was much more comfort than B12 and no harsh but still stiff (a bit less than B12). Overall, I'm happy with this setup. Here the price of D2 set is cheaper than B12. PS. the mechanic guy adjusted the damping to about 55% of the most stiff (it's adjustable).
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12-04-2016, 06:04 AM	#18
cdgatti Colonel 255 Rep 2,547 Posts Drives: e90 328i Join Date: May 2011 Location: KY iTrader: (4)	Don't install aftermarket "Performance" suspension systems if you want a "Factory" comfort ride. BMW engineers work literally thousands of hours to make your ride fit the majority of customers where comfort with a little bit of sport is offered. You went to a system where Bilstein spent alot less time with people that are not BMW suspension experts, they have to be experts on all systems, to design a system that significantly improves the sport aspect of your car with as minimal as possibly comfort sacrifice. You fit into the category that cannot accept that little comfort sacrifice. From the E90 forums we have been having this conversation there for many years now. The only system that gains a little performance but gives up the least comfort is the KW Street Comfort coilover system. Either man up on the comfort side, try the KW system or go back to stock. Good Luck with your suspension quest - but remember it is very difficult to do better than what the BMW engineers have given you for all around comfort and performance. __________________ OEM Black grill and Blackline tails - LCI halogens with Lux V2 coded as DRL - 3M Crystalline - BMS PBX - OEM Euro Airbox with K&N - Hardwired CTEK - Bilstein B6 w/OEM springs and SP perches - Conti DWS06 - HiFi-Helix DSP - JLAudio HD/XD-Morel - CD changer trim - AE optical out
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