KW V3 Noise from Rear

Jayden_F87 · 03-12-2023, 12:56 PM

I’ve had KW V3 on my M2C for about a year (10k kms). I bought the set used so I can’t say for sure how many miles are on them, but I’d say they’re due for a rebuild.

Ever since I first installed them, there were noises coming from the rear; they sound like something is hitting a sheet metal. The shop that did the install told me that I have the early version of KW V3’s, which is prone to have these noises in the rear, but the noise has become louder and more frequent over time.

Anyone else have experience this issue? Could it be due to the shocks getting old and stiffening up this creating more noise?

D.Yooras · 03-13-2023, 02:32 PM

Most common reason for noise from the rear shocks, the clamp nut for the piston inside the damper is coming loose. Most dampers peen the end of the shaft the piston clamping nut threads onto, so it's not likely to come apart entirely, but it will make noise during operation in addition to not working properly.

Worst case, the damper comes completely apart internally and locks up the free movement of the damper causing that corner to stop moving and putting all the force of the suspension into the body of the car. Best case, it just annoys you until you fix it.

03-12-2023, 12:56 PM	#1
Jayden_F87 '20 M2 Comp. 902 Rep 182 Posts Drives: '20 M2 Competition DCT Join Date: May 2019 Location: Socal -> South Korea iTrader: (0) Garage List 2020 BMW M2 Competi ... [7.00]	KW V3 Noise from Rear I’ve had KW V3 on my M2C for about a year (10k kms). I bought the set used so I can’t say for sure how many miles are on them, but I’d say they’re due for a rebuild. Ever since I first installed them, there were noises coming from the rear; they sound like something is hitting a sheet metal. The shop that did the install told me that I have the early version of KW V3’s, which is prone to have these noises in the rear, but the noise has become louder and more frequent over time. Anyone else have experience this issue? Could it be due to the shocks getting old and stiffening up this creating more noise? Attached Images __________________ '20 BSM M2 Competition DCT IG: @porky_m2c
	Appreciate 0 Tweet Quote

03-13-2023, 02:32 PM	#2
D.Yooras Private 86 Rep 75 Posts Drives: BMW M2 MY18 Join Date: Dec 2022 Location: Here iTrader: (0)	Most common reason for noise from the rear shocks, the clamp nut for the piston inside the damper is coming loose. Most dampers peen the end of the shaft the piston clamping nut threads onto, so it's not likely to come apart entirely, but it will make noise during operation in addition to not working properly. Worst case, the damper comes completely apart internally and locks up the free movement of the damper causing that corner to stop moving and putting all the force of the suspension into the body of the car. Best case, it just annoys you until you fix it.
	Appreciate 0 Quote