Rear suspension problem?

MoMoF32 · 03-18-2016, 12:14 PM

Hi folks, BMW newbie here...

I have an f32 m sport with 442m alloys with RFTs. Whenever I come down from speed bumps there's seems to be hardly any give in the rear suspension and the car seems to makes more of a thud noise when going over uneven surfaces.

Is this normal and just properties of the run flats and sport suspension?

Apologies if it's a stupid question and thanks in advance!

stxf30 · 03-18-2016, 02:50 PM

Likely the runflats.

MoMoF32 · 03-18-2016, 02:53 PM

Ah ok, just didn't expect them to be that loud!

stxf30 · 03-18-2016, 03:05 PM

How loud are we talking about? I'd say that the difference between regular tires and runflats is immediately noticeable. On my first BMW with runflats, I thought there was a suspension problem, because on uneven roads there was a lot of noise produced by the stiff sidewalls of the runflats.

MoMoF32 · 03-18-2016, 03:17 PM

I'll try and take an audio clip. It's significantly louder than my wife's f34 M sport, but that's x drive and has 18" alloys with RFTs, so not directly comparable

03-18-2016, 12:14 PM	#1
MoMoF32 New Member 0 Rep 9 Posts Drives: BMW F32 Join Date: Jan 2016 Location: Scotland iTrader: (0)	Rear suspension problem? Hi folks, BMW newbie here... I have an f32 m sport with 442m alloys with RFTs. Whenever I come down from speed bumps there's seems to be hardly any give in the rear suspension and the car seems to makes more of a thud noise when going over uneven surfaces. Is this normal and just properties of the run flats and sport suspension? Apologies if it's a stupid question and thanks in advance!
	Appreciate 0 Tweet Quote

03-18-2016, 02:50 PM	#2
stxf30 First Lieutenant 94 Rep 389 Posts Drives: '13 F30 335i MSport Join Date: Jan 2012 Location: San Antonio, Texas iTrader: (0) Garage List 2013 BMW 335i MSport [9.00]	Likely the runflats. __________________ 2013 GSM 335i MSport
	Appreciate 0 Quote

03-18-2016, 02:53 PM	#3
MoMoF32 New Member 0 Rep 9 Posts Drives: BMW F32 Join Date: Jan 2016 Location: Scotland iTrader: (0)	Ah ok, just didn't expect them to be that loud!
	Appreciate 0 Quote

03-18-2016, 03:05 PM	#4
stxf30 First Lieutenant 94 Rep 389 Posts Drives: '13 F30 335i MSport Join Date: Jan 2012 Location: San Antonio, Texas iTrader: (0) Garage List 2013 BMW 335i MSport [9.00]	How loud are we talking about? I'd say that the difference between regular tires and runflats is immediately noticeable. On my first BMW with runflats, I thought there was a suspension problem, because on uneven roads there was a lot of noise produced by the stiff sidewalls of the runflats. __________________ 2013 GSM 335i MSport
	Appreciate 0 Quote

03-18-2016, 03:17 PM	#5
MoMoF32 New Member 0 Rep 9 Posts Drives: BMW F32 Join Date: Jan 2016 Location: Scotland iTrader: (0)	I'll try and take an audio clip. It's significantly louder than my wife's f34 M sport, but that's x drive and has 18" alloys with RFTs, so not directly comparable
	Appreciate 0 Quote