KW HAS Kit: Heavy Vibration

Mr_M5Guy · 03-03-2018, 08:45 PM

I installed the KW HAS kit a few weeks ago and I have been experiencing a heavy vibration. The vibration is ONLY felt during 50mph and greater acceleration (moderate to heavy). There is no vibration during cruising or breaking.

Also the vibration is not felt in the steering wheel, it's more so in the cabin of the car. The car is under warranty so after bmw inspecting the differential, axles, spacers, etc. They determine it was suspension related when they raised the car and it went away.

I will be taking it to the shop that did the install, but was curious if anyone else have experienced this.

Mcc420 · 03-03-2018, 10:24 PM

I've been running the kW has kit for over a year and I have no vibration.

josec70 · 03-03-2018, 10:46 PM

Zero vibration here as well.

ykjones · 03-03-2018, 10:58 PM

Been running KW HAS exactly a year today. No vibration issues.

Mr_M5Guy · 03-03-2018, 11:13 PM

I have had success with KW also..... Just looking for suggestions.

SapphireM5 · 03-04-2018, 08:22 AM

So when lowered you get vibration and no vibration when car is raised back to stock height? How many miles on the car? Is it possible the vibration is coming from the driveshaft/drivetrain? Usually drivetrain vibrations will be felt in the seat and cabin, not in the wheel. By lowering you are slightly changing the angle of the drivetrain, may be worth a shot to check those for play.

GL

Mr_M5Guy · 03-04-2018, 10:20 AM

I should also note that this is on my M6GC. I don't seen a lot of discussion on that board, so I thought I would post here.

Mr_M5Guy · 03-04-2018, 10:24 AM

Quote:

Originally Posted by SapphireM5

So when lowered you get vibration and no vibration when car is raised back to stock height? How many miles on the car? Is it possible the vibration is coming from the driveshaft/drivetrain? Usually drivetrain vibrations will be felt in the seat and cabin, not in the wheel. By lowering you are slightly changing the angle of the drivetrain, may be worth a shot to check those for play.

GL

Correct. When raised the vibration was almost completely eliminated. Bmw engineers came and checked out the car, including the axles. But honestly I think they are taking the easy way out and attributing to mods.

josec70 · 03-04-2018, 12:57 PM

Have the shop that did the install take another look; if the vibration only started happening after the install it’s more than likely related.

TheHouseWon · 03-04-2018, 02:08 PM

Bad install maybe? I would try to get a new set warrantied by KW and have someone else install it.

TopEnd · 03-07-2018, 12:42 PM

u mentioned spacers, take of the front spacers and run the car.

Mr_M5Guy · 03-07-2018, 12:55 PM

Quote:

Originally Posted by TopEnd

u mentioned spacers, take of the front spacers and run the car.

That was the first thing that was done. No effect. The vibration isn't always while driving only while accelerating.

TopEnd · 03-09-2018, 06:21 AM

Quote:

Originally Posted by Mr_M5Guy

Also the vibration is not felt in the steering wheel, it's more so in the cabin of the car. The car is under warranty so after bmw inspecting the differential, axles, spacers, etc. They determine it was suspension related when they raised the car and it went away.

What kind of BS test was that? your BMW service center is full of crap. No tech raises a car and drives it to see if a vibration goes away. They basically dubbed you because you have aftermarket suspension. Maybe it is the suspension, maybe its the guibo flex disc (between tranny and driveshaft), since you're not feeling it in your steering wheel.

03-03-2018, 08:45 PM	#1
Mr_M5Guy First Lieutenant 58 Rep 327 Posts Drives: e60 M5 Join Date: Apr 2014 Location: Globe Trecker iTrader: (0)	KW HAS Kit: Heavy Vibration I installed the KW HAS kit a few weeks ago and I have been experiencing a heavy vibration. The vibration is ONLY felt during 50mph and greater acceleration (moderate to heavy). There is no vibration during cruising or breaking. Also the vibration is not felt in the steering wheel, it's more so in the cabin of the car. The car is under warranty so after bmw inspecting the differential, axles, spacers, etc. They determine it was suspension related when they raised the car and it went away. I will be taking it to the shop that did the install, but was curious if anyone else have experienced this. Last edited by Mr_M5Guy; 03-03-2018 at 08:51 PM..
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03-03-2018, 10:24 PM	#2
Mcc420 Captain 475 Rep 608 Posts Drives: G80 M3CX Join Date: Oct 2013 Location: Mtl iTrader: (1) Garage List 2023 g80x [0.00] [0.00]	I've been running the kW has kit for over a year and I have no vibration.
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03-03-2018, 10:46 PM	#3
josec70 Major General 4062 Rep 5,231 Posts Drives: 22' Individual Chalk M5C Join Date: Dec 2015 Location: Miami iTrader: (2)	Zero vibration here as well. __________________ CURRENT: 22' INDIVIDUAL M5\| CHALK \| TARTUFO \| CCB \| MPE \| H&R \| IND GONE: 19' M5C\| SINGAPORE GREY\| ARAGON\|VELOS VLS-06\|H&R\|iPE\|IND\|XPEL\|CF\|RADENSO GONE: 15' F10 M5\|BSM\|BLACK\|VELOS VSS-S2\|KW\|AKRA\|IND\|CF \|ESCORT 360\|VELOS PIGGY GONE: 13' F10 M5\|SG\|BLACK\|AKRA\|KW\|IND LONG GONE: 09' E60 M5\|02' E39 M5
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03-03-2018, 10:58 PM	#4
ykjones Master Gunnery Sergeant 72 Rep 220 Posts Drives: 2013 F10 M5 Signapore Gray Join Date: Jul 2016 Location: Kalispell, MT iTrader: (0)	Been running KW HAS exactly a year today. No vibration issues. __________________ VF Engineering Hex Stage 1, RPI GTM Black edition, KW HAS, Dinan sway bars, Matt Schnell spacers, IND black chrome, M Performance rear spoiler, M Performance rear diffuser, Michelin Pilot Sport 4S's, ESS stainless steel brake lines, EBC Red Stuff ceramic pads, BMC air filters, charcoal filter delete, sprint booster, V1w/Blendmount, BIM coding all options, Pedal Haus pedals, Formula One Pinnacle Tint
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03-03-2018, 11:13 PM	#5
Mr_M5Guy First Lieutenant 58 Rep 327 Posts Drives: e60 M5 Join Date: Apr 2014 Location: Globe Trecker iTrader: (0)	I have had success with KW also..... Just looking for suggestions.
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03-04-2018, 08:22 AM	#6
SapphireM5 Major 711 Rep 1,107 Posts Drives: 2013 M5 Sapphire Black Join Date: Feb 2017 Location: New Jersey iTrader: (3)	So when lowered you get vibration and no vibration when car is raised back to stock height? How many miles on the car? Is it possible the vibration is coming from the driveshaft/drivetrain? Usually drivetrain vibrations will be felt in the seat and cabin, not in the wheel. By lowering you are slightly changing the angle of the drivetrain, may be worth a shot to check those for play. GL __________________ '13 Black Sapphire Metallic - BPM Stage 1 Tune - RPI Exhaust - KW HAS Kit - 12mm spacers all around- Carbon Fiber front lip - High Kick Trunk Spoiler - Rear Roof Spoiler - IND Kidney and Fender Grills - 20% Tint all around 50% Front Windshield - PPF
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03-04-2018, 10:20 AM	#7
Mr_M5Guy First Lieutenant 58 Rep 327 Posts Drives: e60 M5 Join Date: Apr 2014 Location: Globe Trecker iTrader: (0)	I should also note that this is on my M6GC. I don't seen a lot of discussion on that board, so I thought I would post here.
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03-04-2018, 12:57 PM	#9
josec70 Major General 4062 Rep 5,231 Posts Drives: 22' Individual Chalk M5C Join Date: Dec 2015 Location: Miami iTrader: (2)	Have the shop that did the install take another look; if the vibration only started happening after the install it’s more than likely related. __________________ CURRENT: 22' INDIVIDUAL M5\| CHALK \| TARTUFO \| CCB \| MPE \| H&R \| IND GONE: 19' M5C\| SINGAPORE GREY\| ARAGON\|VELOS VLS-06\|H&R\|iPE\|IND\|XPEL\|CF\|RADENSO GONE: 15' F10 M5\|BSM\|BLACK\|VELOS VSS-S2\|KW\|AKRA\|IND\|CF \|ESCORT 360\|VELOS PIGGY GONE: 13' F10 M5\|SG\|BLACK\|AKRA\|KW\|IND LONG GONE: 09' E60 M5\|02' E39 M5
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03-04-2018, 02:08 PM	#10
TheHouseWon Colonel 644 Rep 2,039 Posts Drives: 2013 M5 Join Date: Nov 2015 Location: SoCal iTrader: (10)	Bad install maybe? I would try to get a new set warrantied by KW and have someone else install it.
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03-07-2018, 12:42 PM	#11
TopEnd Private First Class 17 Rep 124 Posts Drives: 2014 BMW M6 Gran Coupe Join Date: Jul 2016 Location: NYC iTrader: (0)	u mentioned spacers, take of the front spacers and run the car.
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