B58 squeak - faulty tensioner/slipping belt

jpsimon · 04-20-2017, 10:19 AM

Just over 10k miles and haven't had this issue yet.

BeaminBimmer · 04-20-2017, 10:25 AM

Mine still does it... I'm at 13 600 miles. Does it every day. Just did my service last week, BMW tech said the same thing as he told me last time. It's normal according to BMW HQ.

azwillnj · 04-21-2017, 10:17 AM

I have a 2016 340 8AT X-Drive with about 6k miles on it and I am having the same issue.

I put the JB+ on it and it causes a huge lag in acceleration when it squeaks. It was happening before and after the JB+ but with the extra power I can tell something is not happy when it slips and makes that noise. It's important to note that when I complete a shift successfully without the noise happening the shift and power delivery feel normal. When shifting with a similar throttle position and vigor if it makes the squeak noise there is a huge stumble between the shift. Strangely enough there seems to be less of a power drop when traction control is turned off. I have X-Drive and I cant imagine that the wheels are actually spinning at all between shifts.

Alex.

Thus · 04-21-2017, 11:14 AM

Quote:

Originally Posted by BeaminBimmer

Mine still does it... I'm at 13 600 miles. Does it every day. Just did my service last week, BMW tech said the same thing as he told me last time. It's normal according to BMW HQ.

Does the problem occur if you properly warm up your car before using Sport+ and heavy acceleration?

azwillnj · 04-21-2017, 01:10 PM

Quote:

Originally Posted by Thus

Does the problem occur if you properly warm up your car before using Sport+ and heavy acceleration?

For me, yes. I drove 20 mins to work today with the ambient temp around 70F. I launched off a light with about 80% throttle in manual mode and got the squeak when going from 1st to 2nd.

Bav@Heart · 04-21-2017, 02:01 PM

I get this same thing too. I thought it was tires chirping because I notice them most on damp days and in the morning when the sun has not warmed up the roads. That was my theory anyways. I have driven with my head practically outside the car and I feel like it comes from the back of the car. If others with xdrive have the same issue, it cannot be wheel slippage. I wonder if it is the rear differential? I must admit, once the transmission is warm and the car has been running for a while, I don't remember hearing it.

jalkster · 04-24-2017, 01:11 PM

Quote:

Originally Posted by Thus

Does the problem occur if you properly warm up your car before using Sport+ and heavy acceleration?

So, I have noticed the problem can occur if the engine is fully warmed up, but only if you let it sit idling for a while. The chirp/squeal will happen regardless of how hot the oil temp reads. Its like the tranny has to warm up too.

Its nbd, I warm up my car everytime before going over 3500rpm anyways. I just hate hearing that noise haha.

azwillnj · 06-30-2017, 09:35 AM

Brought mine into the dealership yesterday and they gave me the same story.. No TSB, cant reproduce, you were probably squeaking the tires not a belt... ect. I guess we just need to deal with it until we get a proper TSB.

bimmer456 · 06-30-2017, 09:44 AM

This post is from June of 2016 when the b58 was still fairly new. This happens on occasion with my car usually just after getting underway from the 1st to second shift. It's not particularly loud and sounds like the belt slipping or something with the turbo wastegate. I imagine the SA saying it's normal during warmup and not to worry about it or they won't be able to reproduce it on demand unless it happens every time.

truth649 · 07-06-2017, 07:43 PM

Just started happening today, as soon as it did I thought I remembered this post about it. My first thought was tires breaking loose but it couldn't have been. I'll have to see if it repeats but it sounds like it probably will. Even at idle it seems like there is a bit more belt chirping than there should be.

jleach · 07-28-2017, 01:39 PM

It's not just a 340i issue... my 2017 440i xdrive also has this issue.

jalkster · 07-28-2017, 02:18 PM

Quote:

Originally Posted by jleach

It's not just a 340i issue... my 2017 440i xdrive also has this issue.

wonder if any 2er guys are having this...

Ya Buddy45 · 07-28-2017, 02:54 PM

Not sure if someone has already said this but this happens to me aswell. i think i drive aggresive enough i will get it going from second to third at times. I notice it only happens when u start the car and begin driving. What i have come to think is the culprit is just that there is so much torque (and im sure my jb4 doesnt help the situation) is that it spins the tire when shifting cause i feel it jerky a little. So that is what i think is the problem.

VVlasy · 07-28-2017, 04:06 PM

Quote:

Originally Posted by Ya Buddy45

Not sure if someone has already said this but this happens to me aswell. i think i drive aggresive enough i will get it going from second to third at times. I notice it only happens when u start the car and begin driving. What i have come to think is the culprit is just that there is so much torque (and im sure my jb4 doesnt help the situation) is that it spins the tire when shifting cause i feel it jerky a little. So that is what i think is the problem.

It is not the tires.... If it was, would not matter if it was after warmup or you are driving long distance, should be more prominent after warmup actually....

iMinLuv · 07-29-2017, 07:17 AM

Quote:

Originally Posted by jwar93

Quote:

Originally Posted by blackonblack335i

Mine does the same, and I've concluded it only does it when I have the AC running. Taking it in for service next week and I plan on bringing it up. Have you tested it with AC on/off?

Same for me. Usually when the car is colder and AC on. Once the car warms up it typically goes away

228 · 08-04-2017, 10:37 AM

Quote:

Originally Posted by jalkster

Quote:

Originally Posted by jleach

It's not just a 340i issue... my 2017 440i xdrive also has this issue.

wonder if any 2er guys are having this...

Yes my 240i also has the squeak, ive just learnt to deal with it.

JamRWS6 · 08-04-2017, 09:54 PM

Quote:

Originally Posted by 228

Quote:

Originally Posted by jalkster

Quote:

Originally Posted by jleach

It's not just a 340i issue... my 2017 440i xdrive also has this issue.

wonder if any 2er guys are having this...

Yes my 240i also has the squeak, ive just learnt to deal with it.

Same here, just learned to deal with it. Almost feels like it is slipping and is prominent when the car is cold.

jalkster · 08-07-2017, 10:37 AM

so, the real question is, whose b58 is not doing it?

Beek · 08-07-2017, 12:40 PM

Quote:

Originally Posted by jalkster

so, the real question is, whose b58 is not doing it?

Mine ... but it might take someone with better hearing than me to confirm that.

msmching · 08-07-2017, 03:38 PM

Let me add my car to the list too then. It's doing the same and I've always thought its a sound that's normal. But I drive in normal mode 99.99% of the time, so I kinda just forget about it.

BeaminBimmer · 08-09-2017, 09:14 AM

Quote:

Originally Posted by Beek

Quote:

Originally Posted by jalkster

so, the real question is, whose b58 is not doing it?

Mine ... but it might take someone with better hearing than me to confirm that.

Quote:

Originally Posted by Beek

Quote:

Originally Posted by jalkster

so, the real question is, whose b58 is not doing it?

Mine ... but it might take someone with better hearing than me to confirm that.

Believe me it'll do it. My brother's 340 wasn't doing it and one day out of the blue it just started. And it hasn't stopped

The_Stig7 · 08-09-2017, 11:08 AM

Add me too the list.... same issue. In sport mode after letting the car warm up and decent acceleration, manual mode, I get the squeak as well from 1-2, 2-3 and sometimes 3-4 but almost always 2-3. Usually around the 2500-3500k rpm range.

04-20-2017, 10:19 AM	#111
jpsimon Team Zissou 3065 Rep 10,197 Posts Drives: 2022 AWD M3 Comp - SMB Join Date: Dec 2006 Location: CT iTrader: (7)	Just over 10k miles and haven't had this issue yet.
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04-20-2017, 10:25 AM	#112
BeaminBimmer Private 33 Rep 77 Posts Drives: BMW X5 M50i Join Date: Oct 2013 Location: Montreal iTrader: (0)	Mine still does it... I'm at 13 600 miles. Does it every day. Just did my service last week, BMW tech said the same thing as he told me last time. It's normal according to BMW HQ.
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04-21-2017, 10:17 AM	#113
azwillnj First Lieutenant 318 Rep 387 Posts Drives: 2023 M340i xDrive Join Date: Nov 2007 Location: Northern VA iTrader: (0)	I have a 2016 340 8AT X-Drive with about 6k miles on it and I am having the same issue. I put the JB+ on it and it causes a huge lag in acceleration when it squeaks. It was happening before and after the JB+ but with the extra power I can tell something is not happy when it slips and makes that noise. It's important to note that when I complete a shift successfully without the noise happening the shift and power delivery feel normal. When shifting with a similar throttle position and vigor if it makes the squeak noise there is a huge stumble between the shift. Strangely enough there seems to be less of a power drop when traction control is turned off. I have X-Drive and I cant imagine that the wheels are actually spinning at all between shifts. Alex. __________________ Current: 2023 G20 LCI M340i xDrive History: 2005 E90 325i > 2008 E90 328xi > 2011 E90 LCI 335i xDrive > 2013 F30 328i xDrive > 2016 F30 LCI 340i xDrive > 2020 G20 M340i xDrive WE ARE!
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04-21-2017, 02:01 PM	#116
Bav@Heart New Member 3 Rep 27 Posts Drives: 2013 535i M-Sport Join Date: Nov 2014 Location: HOUSTON iTrader: (0)	I get this same thing too. I thought it was tires chirping because I notice them most on damp days and in the morning when the sun has not warmed up the roads. That was my theory anyways. I have driven with my head practically outside the car and I feel like it comes from the back of the car. If others with xdrive have the same issue, it cannot be wheel slippage. I wonder if it is the rear differential? I must admit, once the transmission is warm and the car has been running for a while, I don't remember hearing it.
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06-30-2017, 09:35 AM	#118
azwillnj First Lieutenant 318 Rep 387 Posts Drives: 2023 M340i xDrive Join Date: Nov 2007 Location: Northern VA iTrader: (0)	Brought mine into the dealership yesterday and they gave me the same story.. No TSB, cant reproduce, you were probably squeaking the tires not a belt... ect. I guess we just need to deal with it until we get a proper TSB. __________________ Current: 2023 G20 LCI M340i xDrive History: 2005 E90 325i > 2008 E90 328xi > 2011 E90 LCI 335i xDrive > 2013 F30 328i xDrive > 2016 F30 LCI 340i xDrive > 2020 G20 M340i xDrive WE ARE!
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06-30-2017, 09:44 AM	#119
bimmer456 Major General 2963 Rep 5,997 Posts Drives: 340i Join Date: Nov 2016 Location: Pasadena, CA iTrader: (0)	This post is from June of 2016 when the b58 was still fairly new. This happens on occasion with my car usually just after getting underway from the 1st to second shift. It's not particularly loud and sounds like the belt slipping or something with the turbo wastegate. I imagine the SA saying it's normal during warmup and not to worry about it or they won't be able to reproduce it on demand unless it happens every time.
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07-06-2017, 07:43 PM	#120
truth649 Enlisted Member 14 Rep 49 Posts Drives: 2016 BMW 340i xdrive Join Date: Oct 2016 Location: Bristol CT iTrader: (0)	Just started happening today, as soon as it did I thought I remembered this post about it. My first thought was tires breaking loose but it couldn't have been. I'll have to see if it repeats but it sounds like it probably will. Even at idle it seems like there is a bit more belt chirping than there should be.
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07-28-2017, 01:39 PM	#121
jleach Registered 0 Rep 2 Posts Drives: 2017 440i xDrive Join Date: Jul 2017 Location: OKC, OK iTrader: (0)	It's not just a 340i issue... my 2017 440i xdrive also has this issue.
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07-28-2017, 02:54 PM	#123
Ya Buddy45 Enlisted Member 10 Rep 48 Posts Drives: Bmw 340i Join Date: Sep 2015 Location: miami,Fl iTrader: (0)	Not sure if someone has already said this but this happens to me aswell. i think i drive aggresive enough i will get it going from second to third at times. I notice it only happens when u start the car and begin driving. What i have come to think is the culprit is just that there is so much torque (and im sure my jb4 doesnt help the situation) is that it spins the tire when shifting cause i feel it jerky a little. So that is what i think is the problem.
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08-07-2017, 10:37 AM	#128
jalkster Lieutenant 220 Rep 579 Posts Drives: X3MC Join Date: Jan 2017 Location: Dallas, TX iTrader: (3)	so, the real question is, whose b58 is not doing it? __________________ Current: 2021 M340i Previous: 2020 X3M Comp BM3 E30 & 2016 340i 8AT DME Stage 2 \| FBO/Catless Meisterschaft Catback \| Ohlins R&T
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08-07-2017, 03:38 PM	#130
msmching Private First Class 95 Rep 174 Posts Drives: Mini White Driving Machine Join Date: Jul 2017 Location: pasadena iTrader: (1)	Let me add my car to the list too then. It's doing the same and I've always thought its a sound that's normal. But I drive in normal mode 99.99% of the time, so I kinda just forget about it.
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08-09-2017, 11:08 AM	#132
The_Stig7 New Member 2 Rep 14 Posts Drives: 2016 340i xDrive Join Date: Oct 2016 Location: New England iTrader: (0)	Add me too the list.... same issue. In sport mode after letting the car warm up and decent acceleration, manual mode, I get the squeak as well from 1-2, 2-3 and sometimes 3-4 but almost always 2-3. Usually around the 2500-3500k rpm range.
	Appreciate 0 Quote