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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > Suspension | Chassis | Brakes > H&R Releases Lowering Springs for F30 328i and 335i
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      02-27-2012, 10:52 PM   #67
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so does this mean these springs by H&R are good for normal/aggressive street driving and a lower look without having to mess w the dampers at all? or is this more of the usual putting a band aid on something that really needs stitches?
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      02-28-2012, 01:39 AM   #68
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Originally Posted by creaminz View Post
Who LTBMW? Nah man, they would never do such a thing.
i know i was kidding
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      02-28-2012, 02:20 AM   #69
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Quote:
Originally Posted by gastoys-335i View Post
Lowering Springs IMO is just a cheap way to lower your car and does nothing for performance - car may feel more stable because it's lower, but the stock shocks/stuts must be replaced too! IMO - invest the money for a nice set of coilovers. I installed lower springs in my 2010 WRX and ended up replacing with coilovers because all it did was lower my car 1.4 inches, but drove like crap especially when you hit a bump during a high speed corner - actually felt unstable!
The stock struts and shocks can only control the stock rate springs at stock height at best. Any lowering or increase in rates, more rebound valving is needed, no question there.

I test drove a new F30 328i over the weekend and still find the compression damping to be too much and rebound damping lacking. Installing sport springs only is not an upgrade, but rather a down grade performance wise.

Coming from 14+ years in BMW suspension tuning...If going with springs only, struts and shocks with better valving is a must. Coilovers are usually match in terms of spring rates and valving so not only you get the looks you are after, the performance doesn't suffer either.
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      02-28-2012, 02:23 AM   #70
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Quote:
Originally Posted by bmrm396 View Post
so does this mean these springs by H&R are good for normal/aggressive street driving and a lower look without having to mess w the dampers at all? or is this more of the usual putting a band aid on something that really needs stitches?
You are right on!

Sport springs with oem struts and shocks are not a good combo.
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      02-28-2012, 02:01 PM   #71
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Quote:
Originally Posted by bmrm396 View Post
so does this mean these springs by H&R are good for normal/aggressive street driving and a lower look without having to mess w the dampers at all? or is this more of the usual putting a band aid on something that really needs stitches?
Springs are mostly for cosmetic and in some applications have some mild performance gains in handling. Doing a full coilover setup or matched springs with more aggressive dampers will always outperform stock shocks with springs
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      03-16-2012, 10:37 AM   #72
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Are those the Sport or Super Sport on the Turner car?
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      03-16-2012, 10:44 AM   #73
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Originally Posted by dardeca View Post
Are those the Sport or Super Sport on the Turner car?
Sport (more modest lowering).
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      03-16-2012, 10:52 AM   #74
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      03-16-2012, 11:56 AM   #75
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may be i'm too much of a skeptic ... but BMW develops F30 suspension for years including the friggin Ring ... and HR makes springs for it in 1 month? What are the chances this is half baked.. i'll bet it's gonna have a bouncy ride and most people will say "get coilovers instead"

EDIT: people above are already saying that...
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      03-16-2012, 12:28 PM   #76
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The height is acceptable
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      03-16-2012, 12:40 PM   #77
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Quote:
Originally Posted by research View Post
may be i'm too much of a skeptic ... but BMW develops F30 suspension for years including the friggin Ring ... and HR makes springs for it in 1 month? What are the chances this is half baked.. i'll bet it's gonna have a bouncy ride and most people will say "get coilovers instead"

EDIT: people above are already saying that...
I would hope that most people know better than to think they can spend a few hundred bucks on springs and 'improve' their handling. Anyone who just buys springs is doing so because they want the car to be lower and either can't afford to swap anything else or doesn't care enough to do so. I see plenty of people with cars slammed into the ground who are perfectly happy to just cruise around at the speed limit (or even below it ) not everyone cares about performance or handling.

But, if you do care about performance or the feel of your car through corners, swapping springs without touching anything else is not a great idea.
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      03-16-2012, 12:47 PM   #78
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Quote:
Originally Posted by georgere
Quote:
Originally Posted by Zebra99 View Post
Hahahahaha was just thinking the same thing.

On a 3series though depending on your location it shouldn't cost more then $350-450 to install. Well worth the price when you add dampers(shocks) which are about $600. To the above guy, just get a pro kit of sprins & shocks, approx. $800-900 and the install and you'll have a sexy lowered nimble machine. Well worth it IMO.
does it really improve handling?
Not at all
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      03-16-2012, 12:48 PM   #79
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Coilovers for the win... Springs are a suckers bet.

KW Variant 2's were fantastic on my e90 335
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      03-16-2012, 02:56 PM   #80
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Quote:
Originally Posted by doc19
Quote:
Originally Posted by Blindside_137 View Post
my roommate bought eibach springs to lower his 650i for 300$. He found out afterward that it was $800-1000 to get them installed....

so they're still sitting in his room.
I am little confused about someone who has a 650i, but cannot afford a $1300 mod...
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      03-17-2012, 12:38 AM   #81
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Quote:
Originally Posted by trfortin69 View Post
No sheet
People who can only afford to spend $1300 a month on a car. I can't speak for all, but most people in NYC drive cars worth well over $100K who wouldn't dare to even spend $600 on a single, affective performance modification so instead they spend $100 at a time getting typical modifications (black tails, tints, black grilles, black emblems, etc.) you see on every other "modified car" in NYC.
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      03-17-2012, 01:31 AM   #82
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Quote:
Originally Posted by research View Post
may be i'm too much of a skeptic ... but BMW develops F30 suspension for years including the friggin Ring ... and HR makes springs for it in 1 month? What are the chances this is half baked.. i'll bet it's gonna have a bouncy ride and most people will say "get coilovers instead"

EDIT: people above are already saying that...
it is possible BMW private label their OEM from companies like H&R or Eibach. Maybe thats how they make em so fast?
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      03-17-2012, 02:08 AM   #83
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^lol

I'm sure all they need to know is whether the spring will fit the strut cup/plates, and the numbers are based on some formula from previous testing with older vehicles to calculate the spring rates. The improved handing statement is simply based on lower vehicle height, granted it's only improved to the point an amateur driver will notice.

Ok that was all a technical guess
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      03-17-2012, 05:08 AM   #84
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Quote:
Originally Posted by Blindside_137 View Post
college kid, spent all his savings (30K) from scholarships and research grants and high school jobs plus selling some shares and his parents chipped in another 13K for his car.

He has less than 1 grand to his name now, so he doesnt want to spend every last dime lowering his car. That money's going to more important things, like spring break lol
College kid spends almost all his savings and then some (parents' $13k) to buy a car he can't afford to install new springs on, just so he can have the privilege of driving a honking big 650 around?

Unless he has a source of significant income (and no, scholarship and research grants for a college _kid_ won't amount to significant), this kid is heading to financial irresponsibility and future indebtedness. Would it kill him to drive a smaller & cheaper car?

Sheesh, I'm feeling my age!!
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      03-17-2012, 06:53 AM   #85
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Angry Seriously?

It's funny how the same arguments happen every year for decades. We old guys figured out years ago that lowering springs alone ruin a car. Any theoretical handling gains from a lower center of gravity are far more than outweighed by the lack of stability when the dampers (struts, shocks, whatever you call them) don't have the ability to control vehicle motions in extreme situations. And then there's the overall increase in risk of bottoming out, which is a very real problem in the Midwest and Northeast. If you can't afford a matched set of springs and dampers and a proper alignment when you're done, for God's sake just leave well enough alone. BMW spent millions perfecting the F30's handling, and it's best-in-class. Why F with it? So you can creep around at 10 mph on your way to the mall? Go buy an SUV if that's your goal.
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      03-17-2012, 07:32 AM   #86
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Quote:
Originally Posted by Mike D. View Post
We old guys figured out years ago that lowering springs alone ruin a car. Any theoretical handling gains from a lower center of gravity are far more than outweighed by the lack of stability when the dampers (struts, shocks, whatever you call them) don't have the ability to control vehicle motions in extreme situations. And then there's the overall increase in risk of bottoming out, which is a very real problem in the Midwest and Northeast. If you can't afford a matched set of springs and dampers and a proper alignment when you're done, for God's sake just leave well enough alone.
As per my experience reported in post #18 above, your concerns are exaggerated and unjustified. I had a great experience with my lowered suspension (Eibach) and stock dampers for 65000 miles. My handling is not ruined, neither my ride and the car is more enjoyable. Would do it again.
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      03-17-2012, 07:52 AM   #87
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Nice! Can't wait until we get our hands on an F30!
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      03-17-2012, 02:01 PM   #88
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looks great lowered. F30 just looked stunning in AW.
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