F10 550i on Eibach springs

RC3 · 06-17-2011, 09:27 AM

Quote:

Originally Posted by SkiingMonkey

You guys spooked me enough that I went 285/30 on the rear (exchanged them out). I plan on keeping the 255/30 up front as the difference is minimal in terms of rotational speed and diameter.

I'll aim for the Eibach's as well. Thanks for the tips guys.

285/25 may be way too thin. The So. Cal. bros have them. But they are ballers.

mlai · 06-17-2011, 10:50 AM

Quote:

Originally Posted by RC3

285/30 may be way too thin. The So. Cal. bros have them. But they are ballers.

I have 245/35R20 and 285/30R20 on mine.......

RC3 · 06-17-2011, 10:55 AM

Quote:

Originally Posted by mlai

I have 245/35R20 and 285/30R20 on mine.......

Typo. Should be 285/25.

I have 285/30/20 too...

cwong · 06-17-2011, 11:20 AM

Quote:

Originally Posted by mlai

And I think Eibachs are closest to stock in terms of ride quality......

Can't agree more. Just installed the Eibach this afternoon. Not much ride comfort is sacrificed but definitely a much stronger sense of control.

My wife didn't notice at all!

mlai · 06-17-2011, 11:31 AM

Quote:

Originally Posted by cwong

Can't agree more. Just installed the Eibach this afternoon. Not much ride comfort is sacrificed but definitely a much stronger sense of control.

My wife didn't notice at all!

Congrats!! Got to wk right after you left.

wk seems to think that the eibachs are stiffer than h&r, though

chiver · 06-17-2011, 11:37 AM

Mlai, cwong any pics?? Would love to your drop

grimlock · 06-17-2011, 02:16 PM

I have 31.5/33 .. I tried 34.5 front and noticed much bumpier. (This is cold-ish tire temp, not fully warmed up.. during winter (=cold now in summer)
On you 20" bros rims, about +0.6 to 1 maybe? .. its trial and error
I am Pzero nero 19 225/45 and conti DW 255/40

Shops tend to over inflate low profile, and underinflate the luxury cars

koby · 06-17-2011, 08:19 PM

Look great guys! I've been on the fence about a drop as well... 50/50 on if I should do it or not... I don't have dhp so not sure if it will have similar end results as you...

Mlai/cwong - did you guys get our eibach done at wk? Did they remove the rear bench or just the speaker cover? I'm a bit weary of removing a lot of parts and introducing a tone of rattles in the cabin.....

RR80 · 06-17-2011, 09:21 PM

Eibach will not give you much bumpier ride compare to stock! I plan to do mine soon.

cwong · 06-17-2011, 09:35 PM

Quote:

Originally Posted by koby

Look great guys! I've been on the fence about a drop as well... 50/50 on if I should do it or not... I don't have dhp so not sure if it will have similar end results as you...

Mlai/cwong - did you guys get our eibach done at wk? Did they remove the rear bench or just the speaker cover? I'm a bit weary of removing a lot of parts and introducing a tone of rattles in the cabin.....

Yes Mine is done at WK. Only need to remove the speaker to install the springs. (I don't want to remove entire rear seats neither).

As said, not much ride comfort is sacrificed. On regular road surface it's not noticeable. You can feel the difference on really significant road imperfections or bumpers in car park for example. Cornering is much better though I haven't really tried it seriously due to weather.

All in all I'm very happy with this mod. I haven't tried H&R before so can't tell the difference. WK said Eibach is stiffer but CKH (Eibach's distributor) said Eibach is softer....

I'll try to post pics after I change the wheels next week.

mlai · 06-17-2011, 09:35 PM

Quote:

Originally Posted by koby

Look great guys! I've been on the fence about a drop as well... 50/50 on if I should do it or not... I don't have dhp so not sure if it will have similar end results as you...

Mlai/cwong - did you guys get our eibach done at wk? Did they remove the rear bench or just the speaker cover? I'm a bit weary of removing a lot of parts and introducing a tone of rattles in the cabin.....

Done at WK. I specifically told them to just remove the speakers to get to the screws. They must have followed my request because there is no way they could do it in 5 hrs if they have to take the seats apart and put them back in......

Jacky328 · 06-17-2011, 11:20 PM

Quote:

Originally Posted by RC3

I think this is common to most of our cars. The fuel tank side is higher than the other. Even when you have stock springs. Should not be the springs' issue.

Guys who have coilovers would adjust to level. Nothing we can do for ours.

I measured this morning. Found that the fuel-tank side (Right rear) is 1 cm lower than 3 other sides, which measured almost euqally @ 72 cm (from the ground to the 沙版, see attached pic).

(to be precisely, the front left is 0.1cm higher than driver's side)
What about yours, guys?

ICIC · 06-17-2011, 11:32 PM

Quote:

Originally Posted by cwong

Yes Mine is done at WK. Only need to remove the speaker to install the springs. (I don't want to remove entire rear seats neither).

As said, not much ride comfort is sacrificed. On regular road surface it's not noticeable. You can feel the difference on really significant road imperfections or bumpers in car park for example. Cornering is much better though I haven't really tried it seriously due to weather.

All in all I'm very happy with this mod. I haven't tried H&R before so can't tell the difference. WK said Eibach is stiffer but CKH (Eibach's distributor) said Eibach is softer....

I'll try to post pics after I change the wheels next week.

H&R is def. stiffer and lower than Eibach. I used both for my ex cars, while I have to replace with Koni shocks for the H&R, after 2.5 years. You can run Eibach with stock shocks for 2.5 years (say 30-40K km), it won't hurt you so much. I personally like H&R more, but if comfort is first priority, I would take Eibach. Both are x100 better than oem. Highly recommend for spring or coilover change for F10.

mlai · 06-18-2011, 12:15 PM

Took the car for a mid-night run to airport and back. Seems the lower tyre pressures reduced drastically vibrations in the car at speed. Went to 140km/h. Can feel very faint vibrations but I will give the balancing and pressure adjustment a pass.

Car is definitely stiffer than stock but feels like what a sport sedan should be. A little taunt, a little bit road feel, and feeling planted on the road

Now this is what the F10 should feel at stock!

Tomorrow night will really try the stubbs road, and maybe a run to the south side to push cornering

ICIC · 06-18-2011, 10:25 PM

Quote:

Originally Posted by mlai

Took the car for a mid-night run to airport and back. Seems the lower tyre pressures reduced drastically vibrations in the car at speed. Went to 140km/h. Can feel very faint vibrations but I will give the balancing and pressure adjustment a pass.

Car is definitely stiffer than stock but feels like what a sport sedan should be. A little taunt, a little bit road feel, and feeling planted on the road

Now this is what the F10 should feel at stock!

Tomorrow night will really try the stubbs road, and maybe a run to the south side to push cornering

Good adjustment. So what's your tyre pressure for front and rear? 32 (front) & 34 (rear)?

mlai · 06-18-2011, 10:42 PM

Quote:

Originally Posted by ICIC

Good adjustment. So what's your tyre pressure for front and rear? 32 (front) & 34 (rear)?

34/36

koby · 06-19-2011, 03:08 AM

How about ACS? Anyone have those on and would like to share you experiences?

mlai · 06-19-2011, 07:05 AM

Quote:

Originally Posted by koby

How about ACS? Anyone have those on and would like to share you experiences?

You care to be first?

mlai · 06-19-2011, 07:12 AM

Grab the last big of sun light today and took these pics right before 7pm.
Hopefully, will give a better picture (no pun intended

) on the Eibach drop.

Front Gap:

Rear Gap:

You can see that the front has a slightly wider gap (2.5 fingers, measured around 35mm), and the rear only has 2-finger (approx 27mm) worth of gap.

So far this is pretty perfect for me, as they were 4.5 fingers wider before

And I wasn't looking for a slammed looked.

I do have to slow down going thru speed bumps and up ramps at my garage now

Complete side view:

As a comparison, this is with OEM springs:

chiver · 06-19-2011, 09:30 AM

Thx mlai for the pics. There doesn't seem to be a lot of difference between the eibach vs H&R in terms of the drop. For me the front is slightly lower than the rears.

RC3 · 06-19-2011, 09:46 AM

Quote:

Originally Posted by chiver

Thx mlai for the pics. There doesn't seem to be a lot of difference between the eibach vs H&R in terms of the drop. For me the front is slightly lower than the rears.

+1

H&R drops lower, but not slammed. Less than 2 fingers for front and rear.

Personally I like to be a little lower, may be 1 finger. But it's cool for now.

mlai, what happened to your BMW center caps. Drove too fast last night and fell off?

chiver · 06-19-2011, 09:52 AM

I'm very happy with the performance. Got my first scratch on the chin today! Really need to slow down to a crawl going over speed bumps!

06-17-2011, 11:37 AM	#50
chiver Second Lieutenant 8 Rep 250 Posts Drives: bmw Join Date: Aug 2010 Location: Hong Kong iTrader: (0) Garage List 2011 535i [0.00]	Mlai, cwong any pics?? Would love to your drop
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06-17-2011, 02:16 PM	#51
grimlock Colonel 716 Rep 2,003 Posts Drives: F10 N52B30@255PS Join Date: Sep 2010 Location: Hong Kong iTrader: (0)	I have 31.5/33 .. I tried 34.5 front and noticed much bumpier. (This is cold-ish tire temp, not fully warmed up.. during winter (=cold now in summer) On you 20" bros rims, about +0.6 to 1 maybe? .. its trial and error I am Pzero nero 19 225/45 and conti DW 255/40 Shops tend to over inflate low profile, and underinflate the luxury cars
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06-17-2011, 08:19 PM	#52
koby Private First Class 7 Rep 152 Posts Drives: E30/C9RS5/993/C8RS6/S2K Join Date: Dec 2007 Location: BC iTrader: (0)	Look great guys! I've been on the fence about a drop as well... 50/50 on if I should do it or not... I don't have dhp so not sure if it will have similar end results as you... Mlai/cwong - did you guys get our eibach done at wk? Did they remove the rear bench or just the speaker cover? I'm a bit weary of removing a lot of parts and introducing a tone of rattles in the cabin.....
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06-17-2011, 09:21 PM	#53
RR80 Lieutenant 17 Rep 480 Posts Drives: F10 535i Join Date: Nov 2008 Location: Hong Kong, Vancouver iTrader: (0)	Eibach will not give you much bumpier ride compare to stock! I plan to do mine soon.
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06-18-2011, 12:15 PM	#58
mlai Colonel 166 Rep 2,340 Posts Drives: 650GC/E93M3/Lexus LS600HL Join Date: Jun 2010 Location: Hong Kong iTrader: (0) Garage List 2013 BMW F06 650i G ... [0.00] 2011 BMW M3 Cabriol ... [10.00]	Took the car for a mid-night run to airport and back. Seems the lower tyre pressures reduced drastically vibrations in the car at speed. Went to 140km/h. Can feel very faint vibrations but I will give the balancing and pressure adjustment a pass. Car is definitely stiffer than stock but feels like what a sport sedan should be. A little taunt, a little bit road feel, and feeling planted on the road Now this is what the F10 should feel at stock! Tomorrow night will really try the stubbs road, and maybe a run to the south side to push cornering __________________ F06 650i Gran Coupe Ruby Black/Dakota Cinamon- 2012-10-12 Adaptive Drive/IAS/Surround View/Adaptive LED/Comfort Seats/BMW 356 Liquid Black/Michelin PSS 245/35R20-285/30R20 E93 M3 Cabriolet Satin Pearl White/CR - 2012/03/12 Bilstein PSS10/ Michelin PSS 245/35R19-265/35R19 Brembo GT 2011 F10 550i M Sport - Retired
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06-19-2011, 03:08 AM	#61
koby Private First Class 7 Rep 152 Posts Drives: E30/C9RS5/993/C8RS6/S2K Join Date: Dec 2007 Location: BC iTrader: (0)	How about ACS? Anyone have those on and would like to share you experiences?
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06-19-2011, 07:12 AM	#63
mlai Colonel 166 Rep 2,340 Posts Drives: 650GC/E93M3/Lexus LS600HL Join Date: Jun 2010 Location: Hong Kong iTrader: (0) Garage List 2013 BMW F06 650i G ... [0.00] 2011 BMW M3 Cabriol ... [10.00]	Grab the last big of sun light today and took these pics right before 7pm. Hopefully, will give a better picture (no pun intended) on the Eibach drop. Front Gap: Rear Gap: You can see that the front has a slightly wider gap (2.5 fingers, measured around 35mm), and the rear only has 2-finger (approx 27mm) worth of gap. So far this is pretty perfect for me, as they were 4.5 fingers wider before And I wasn't looking for a slammed looked. I do have to slow down going thru speed bumps and up ramps at my garage now Complete side view: As a comparison, this is with OEM springs: Last edited by mlai; 06-19-2011 at 07:34 AM..
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06-19-2011, 09:30 AM	#64
chiver Second Lieutenant 8 Rep 250 Posts Drives: bmw Join Date: Aug 2010 Location: Hong Kong iTrader: (0) Garage List 2011 535i [0.00]	Thx mlai for the pics. There doesn't seem to be a lot of difference between the eibach vs H&R in terms of the drop. For me the front is slightly lower than the rears.
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06-19-2011, 09:52 AM	#66
chiver Second Lieutenant 8 Rep 250 Posts Drives: bmw Join Date: Aug 2010 Location: Hong Kong iTrader: (0) Garage List 2011 535i [0.00]	I'm very happy with the performance. Got my first scratch on the chin today! Really need to slow down to a crawl going over speed bumps!
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