BMW 1-Series Forum (F20) 135i - 1Addicts.com - View Single Post - M135i

BWT · 02-05-2014, 05:45 PM

I can hear a whistling sound on on acceleration with the windows up. Do guys get this sound as well or know what this could be?

I have searched and other M135i owners have said that the turbo can be heard. I have had other turbo cars (not BMW's) and have not heard a similar sound with the windows up.

I have not taken the car past 4.5k RPM as car is still under the running in period.

Thanks

02-05-2014, 05:45 PM	#1
BWT Private 7 Rep 94 Posts Drives: M3 Join Date: Aug 2011 Location: Sydney iTrader: (1)	M135i - Whistling Sound on Acceleration I can hear a whistling sound on on acceleration with the windows up. Do guys get this sound as well or know what this could be? I have searched and other M135i owners have said that the turbo can be heard. I have had other turbo cars (not BMW's) and have not heard a similar sound with the windows up. I have not taken the car past 4.5k RPM as car is still under the running in period. Thanks
	Appreciate 0 Tweet Quote