E93 N55 Noise Normal?

RyDog · 02-24-2020, 08:07 PM

I bought a 335i convertible a few months ago... currently has 50k miles on it. I have always noticed this very faint noise from the engine but only when it is idling in the garage and I am standing next to the engine. Please let me know if it is normal or not! Thank you!

JonOhh · 02-25-2020, 01:50 AM

The 235i in my family has always done it faintly, and got a bit louder around 25k miles. Now has 45k on it and it hasn't gotten any worse, I've always seen it as normal.

My n52 on the other hand does not do this, which really makes me wonder what it is. I assume high pressure fuel system related, even though it kinda sounds like something timing system related.

It's very possible we're hearing different things, so I'll be interested to see what others say when they chime in.

FireBlaze · 02-25-2020, 02:30 AM

My car makes the same noise. Hasn’t gotten worse. Pretty sure it’s normal.

RyDog · 02-25-2020, 03:37 PM

Glad to see a few others have the same noise! Could this be a loose belt of some sort? Belts seem to sound more like a squeal in my experience, though. Thanks!

Tambohamilton · 02-25-2020, 04:22 PM

That's not a noise a belt would make.

Sounds healthy to me, though I have no experience of that engine.

OLI77 · 02-25-2020, 07:05 PM

My N52 is a bit like this. It sounds a bit ticky to me. It sounded normal to me.

02-24-2020, 08:07 PM	#1
RyDog Private 2 Rep 50 Posts Drives: 2013 BMW 335i Convertible Join Date: Jan 2020 Location: United States iTrader: (0)	I bought a 335i convertible a few months ago... currently has 50k miles on it. I have always noticed this very faint noise from the engine but only when it is idling in the garage and I am standing next to the engine. Please let me know if it is normal or not! Thank you!
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02-25-2020, 01:50 AM	#2
JonOhh Captain 672 Rep 733 Posts Drives: 06' 330i Join Date: Dec 2019 Location: Tuscaloosa, Alabama iTrader: (0) Garage List 1999 BMW M3 [10.00] 2013 Fiat 500c Abarth [0.00] 1985 Fiat/Bertone X1/9 [0.00] 2006 BMW 330i [0.00]	The 235i in my family has always done it faintly, and got a bit louder around 25k miles. Now has 45k on it and it hasn't gotten any worse, I've always seen it as normal. My n52 on the other hand does not do this, which really makes me wonder what it is. I assume high pressure fuel system related, even though it kinda sounds like something timing system related. It's very possible we're hearing different things, so I'll be interested to see what others say when they chime in.
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02-25-2020, 02:30 AM	#3
FireBlaze Private First Class 67 Rep 143 Posts Drives: 2013 E92 335i 6MT M-Sport Join Date: Mar 2016 Location: Torrance, CA iTrader: (0)	My car makes the same noise. Hasn’t gotten worse. Pretty sure it’s normal. __________________ VRSF DP, VRSF 7" Intercooler, BMS OCC, Stg 2 LPFP, Custom MHD E30 Tune, Late Model E-Series N55
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02-25-2020, 03:37 PM	#4
RyDog Private 2 Rep 50 Posts Drives: 2013 BMW 335i Convertible Join Date: Jan 2020 Location: United States iTrader: (0)	Glad to see a few others have the same noise! Could this be a loose belt of some sort? Belts seem to sound more like a squeal in my experience, though. Thanks!
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02-25-2020, 04:22 PM	#5
Tambohamilton Brigadier General 3058 Rep 3,909 Posts Drives: E91 330d Join Date: Apr 2019 Location: Herefordshire iTrader: (0)	That's not a noise a belt would make. Sounds healthy to me, though I have no experience of that engine.
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02-25-2020, 07:05 PM	#6
OLI77 Private First Class 103 Rep 130 Posts Drives: E46 325i ZSP, E93 328i Join Date: Jan 2020 Location: Lexington iTrader: (0)	My N52 is a bit like this. It sounds a bit ticky to me. It sounded normal to me.
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