Safe ZSP Spring for a 328 Xdrive?

Wongway · 01-17-2015, 04:23 AM

I have a 2011 E90 328 Xdrive.

Goal is minimal drop.

Was thinking a D5 front, and D4 rear ZSP Spring setup with KONI FSD?

I don't care about dropping the car, it's really just to soften the pothole explosions on this car.

Rick328 · 01-17-2015, 03:53 PM

Are you still on runflats tires? That would be the first step toward your goal.

Rick328 · 01-17-2015, 03:54 PM

Sorry, double reply, damn connection error...

Wongway · 01-17-2015, 10:42 PM

Quote:

Originally Posted by Rick328

Are you still on runflats tires? That would be the first step toward your goal.

I use non runflat winters and already figured on that (compressor and sealaflat in the trunk) but I'd also like to tighten up the handling a bit without killing the day to day driving. (I have 75,000 miles on a 2011)

I figured on the Koni FSD first, and if I want more (or to simply refresh the suspension a bit) replacing the subframe bushings next.

As it is, I figure the FSDs would soften the pothole slams and still allow for the handling I'm used to. The big question is whether D5 front and D4 rear would be the proper application for a manual 328 Xdrive. (I think that's what a 330i had and guessed that'd be the closest safe spring rate for a 328 Xdrive)

Wongway · 02-06-2015, 02:35 PM

Bump, anyone else with experience or insight?

pavproch · 02-06-2015, 02:57 PM

Do I gather it right the 328ix (US specs) moreless equals the 330ix (EU specs)?

If so, as my ODO reads actually some 100k miles (160kilo km) I am at the similar crossroad at the moment... aiming the same (min drop, stiffer, but daily acceptable chassis), I will be giving in soon KW V1 (obviously set to min mandatory drop of 15mm=5/8") + replacing all bushings (OEM BMW) on both front and rear axles, subframes, replacing front arms (OEM BMW again)

As a bonus the UUC stiffer swaybars will go in (provided they will meet their promises and deliver... been waiting/urging them since August to no avail)

Wongway · 02-07-2015, 01:15 AM

Not sure about EU specs, but I know that the US spec 330i Xdrive has the same engine as my 328i Xdrive except the 330i has a better manifold enabling a bit more horsepower/torque. I figured the weight specs would be relatively close.

Mike. · 02-07-2015, 04:56 AM

I have this setup. its safe, it works, and it gives that subtle drop.

ah didnt see the koni fsd shocks, Im still stock

Im also on michelin sport As3

Wongway · 02-09-2015, 03:01 PM

Quote:

Originally Posted by Emozoo

I have this setup. its safe, it works, and it gives that subtle drop.

ah didnt see the koni fsd shocks, Im still stock

Im also on michelin sport As3

You used D5 fronts and D4 rears?

Mike. · 02-09-2015, 04:41 PM

Quote:

Originally Posted by Wongway

You used D5 fronts and D4 rears?

yes

Wongway · 02-09-2015, 06:03 PM

Quote:

Originally Posted by Emozoo

yes

Awesome. Going to guess then, you were happy with the overall subtle change?

Mike. · 02-09-2015, 07:25 PM

Quote:

Originally Posted by Wongway

Awesome. Going to guess then, you were happy with the overall subtle change?

Yea the car is a tad bit firmer around turns, and it gets rid of most of the xdrive gap. Conservative drop, yet noticeable.

01-17-2015, 04:23 AM	#1
Wongway Captain 28 Rep 609 Posts Drives: 328i xdrive Join Date: Sep 2013 Location: Pittsburgh, PA iTrader: (0)	Safe ZSP Spring for a 328 Xdrive? I have a 2011 E90 328 Xdrive. Goal is minimal drop. Was thinking a D5 front, and D4 rear ZSP Spring setup with KONI FSD? I don't care about dropping the car, it's really just to soften the pothole explosions on this car.
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01-17-2015, 03:53 PM	#2
Rick328 Second Lieutenant 40 Rep 245 Posts Drives: 2009 328 xDrive ZSP Join Date: Sep 2013 Location: Quebec iTrader: (0) Garage List 2009 328 xDrive [10.00]	Are you still on runflats tires? That would be the first step toward your goal.
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01-17-2015, 03:54 PM	#3
Rick328 Second Lieutenant 40 Rep 245 Posts Drives: 2009 328 xDrive ZSP Join Date: Sep 2013 Location: Quebec iTrader: (0) Garage List 2009 328 xDrive [10.00]	Sorry, double reply, damn connection error...
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02-06-2015, 02:35 PM	#5
Wongway Captain 28 Rep 609 Posts Drives: 328i xdrive Join Date: Sep 2013 Location: Pittsburgh, PA iTrader: (0)	Bump, anyone else with experience or insight?
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02-06-2015, 02:57 PM	#6
pavproch Private First Class 9 Rep 184 Posts Drives: Z4 3.0i & 330ixT Join Date: Aug 2011 Location: CZ iTrader: (0)	Do I gather it right the 328ix (US specs) moreless equals the 330ix (EU specs)? If so, as my ODO reads actually some 100k miles (160kilo km) I am at the similar crossroad at the moment... aiming the same (min drop, stiffer, but daily acceptable chassis), I will be giving in soon KW V1 (obviously set to min mandatory drop of 15mm=5/8") + replacing all bushings (OEM BMW) on both front and rear axles, subframes, replacing front arms (OEM BMW again) As a bonus the UUC stiffer swaybars will go in (provided they will meet their promises and deliver... been waiting/urging them since August to no avail)
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02-07-2015, 01:15 AM	#7
Wongway Captain 28 Rep 609 Posts Drives: 328i xdrive Join Date: Sep 2013 Location: Pittsburgh, PA iTrader: (0)	Not sure about EU specs, but I know that the US spec 330i Xdrive has the same engine as my 328i Xdrive except the 330i has a better manifold enabling a bit more horsepower/torque. I figured the weight specs would be relatively close.
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02-07-2015, 04:56 AM	#8
Mike. Mike: Everyone's Pal 2042 Rep 2,972 Posts Drives: F80 M3 Join Date: May 2013 Location: Eastern Long Island iTrader: (5) Garage List 2013 BMW 335xi [10.00]	I have this setup. its safe, it works, and it gives that subtle drop. ah didnt see the koni fsd shocks, Im still stock Im also on michelin sport As3 __________________ Alpine MSS Stage 2+ E30 tune\|MST Intakes\|VRSF Single Mid Pipe\|Agency Power Intercooler\|VTT Full solution crank hub fix Last edited by Mike.; 02-07-2015 at 05:03 AM..
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