Issues with the M3

MrM3 · 02-12-2012, 11:24 PM

Hi guys,

Hope that somebody will be able to help me answer some of my questions:

Got an M3 recently and notice some unusual things:

First issue:

When the car first achieve 15km/h in the morning, there is usually some "rubbing" noise coming from the rear of the car. Any ideas what this could be? Once the car gets past that stage, I don't hear the "rubbing" noise anymore. If the car is parked for more than 2 hrs, I usually hear the rubbing noise again (usually at around 15km/h). Not sure if this matters, but outside environmental temperature is around 0-10 degrees Celsius (32-50 Fahrenheit).

Second issue:

This is somewhat hard to describe, but I will try. Sometimes, when I press down on the gas pedal, there appears to be some slight "feedback" in the gas pedal. The only comparison that I can think of is when you slam on the brakes and you get that ABS feedback. The difference is that this "feedback" is on the gas pedal, and the "feedback" is very very very very light (nothing like the ABS feedback.

Thanks and appreciate any replies on these issues.

TheClozer · 02-13-2012, 01:20 AM

Definitely not normal...if your car is still under warranty, take it to the dealership!

luis_m3 · 02-13-2012, 01:39 AM

1) It could very well be the temperature. I personally do not drive my M3 during the winter, but my RSX makes all kinds of noises every morning. Perhaps someone else who actually drives it during the winter can chime in...
2) If you have a DCT... it seems normal; it happens to me depending on my settings. On D3 it happens all the time, on S3 hardly ever. What are your settings? Now, if you have a manual... sorry, can't help you there, as I just don't know.

serranot · 02-13-2012, 04:15 AM

Are you sure the "rubbing noise" is not the ABS self-test? I know you said it's coming from the rear, but is it possible it's coming from the firewall area? The ABS is going to run like that when you first start the car and move it.

LTJohn · 02-13-2012, 09:23 AM

Your parking brake could be sticking.....

Also, it seems the diff will make a noise or 2 until it warms up.

Always a good idea to bring to dealer. You never know.....

Dave07997S · 02-13-2012, 10:46 AM

Is the rubbing sound being made when making sharp turns? This believe it or not is normal, however, BMW offers a friction modifier that will be put in your diffy at your first service.

Regarding the second issue, I feel isn't a issue at all. It could be just some slack in the caliper.

Dave

M3PO · 02-13-2012, 01:13 PM

I believe that the first "issue" is related to cold diff oil.

mdosu · 02-13-2012, 02:06 PM

Quote:

Originally Posted by Dave07997S

Is the rubbing sound being made when making sharp turns? This believe it or not is normal, however, BMW offers a friction modifier that will be put in your diffy at your first service.

Regarding the second issue, I feel isn't a issue at all. It could be just some slack in the caliper.

Dave

+1 first issue is the diff oil. You only experience this while making tight turns correct?

http://www.m3post.com/forums/showthread.php?t=137204

Grail05 · 02-13-2012, 02:22 PM

Quote:

Originally Posted by luis_m3

1) It could very well be the temperature. I personally do not drive my M3 during the winter

some drive the car daily... and in winter without any issue... so at this point the weather is probably not the cause... plus whats 30-50 degress its nothing......

SchnellM3 · 02-13-2012, 04:00 PM

Issue one has to be the diff, all of our cars do this. Also looks like you've already been hooked up with a link to it.

02-12-2012, 11:24 PM	#1
MrM3 Registered 2 Rep 4 Posts Drives: M3 E92 Join Date: Dec 2011 Location: Vancouver iTrader: (0)	Issues with the M3 Hi guys, Hope that somebody will be able to help me answer some of my questions: Got an M3 recently and notice some unusual things: First issue: When the car first achieve 15km/h in the morning, there is usually some "rubbing" noise coming from the rear of the car. Any ideas what this could be? Once the car gets past that stage, I don't hear the "rubbing" noise anymore. If the car is parked for more than 2 hrs, I usually hear the rubbing noise again (usually at around 15km/h). Not sure if this matters, but outside environmental temperature is around 0-10 degrees Celsius (32-50 Fahrenheit). Second issue: This is somewhat hard to describe, but I will try. Sometimes, when I press down on the gas pedal, there appears to be some slight "feedback" in the gas pedal. The only comparison that I can think of is when you slam on the brakes and you get that ABS feedback. The difference is that this "feedback" is on the gas pedal, and the "feedback" is very very very very light (nothing like the ABS feedback. Thanks and appreciate any replies on these issues.
	Appreciate 0 Tweet Quote

02-13-2012, 01:20 AM	#2
TheClozer First Lieutenant 12 Rep 310 Posts Drives: AW e92 M3 Join Date: Apr 2010 Location: Anaheim Hills iTrader: (1)	Definitely not normal...if your car is still under warranty, take it to the dealership! __________________
	Appreciate 0 Quote

02-13-2012, 01:39 AM	#3
luis_m3 Low Pro... 35 Rep 1,067 Posts Drives: 2013 E92 Join Date: Dec 2010 Location: Denver iTrader: (0)	1) It could very well be the temperature. I personally do not drive my M3 during the winter, but my RSX makes all kinds of noises every morning. Perhaps someone else who actually drives it during the winter can chime in... 2) If you have a DCT... it seems normal; it happens to me depending on my settings. On D3 it happens all the time, on S3 hardly ever. What are your settings? Now, if you have a manual... sorry, can't help you there, as I just don't know.
	Appreciate 0 Quote

02-13-2012, 04:15 AM	#4
serranot Lieutenant 324 Rep 488 Posts Drives: 2011 E90 M3 6MT Join Date: Mar 2011 Location: Middletown, MD iTrader: (0) Garage List 2011 BMW E90 M3 [10.00]	Are you sure the "rubbing noise" is not the ABS self-test? I know you said it's coming from the rear, but is it possible it's coming from the firewall area? The ABS is going to run like that when you first start the car and move it.
	Appreciate 0 Quote

02-13-2012, 09:23 AM	#5
LTJohn First Lieutenant 140 Rep 309 Posts Drives: 2019 Porsche GT3 Join Date: Oct 2011 Location: New Jersey iTrader: (0)	Your parking brake could be sticking..... Also, it seems the diff will make a noise or 2 until it warms up. Always a good idea to bring to dealer. You never know.....
	Appreciate 0 Quote

02-13-2012, 10:46 AM	#6
Dave07997S Brigadier General 723 Rep 3,965 Posts Drives: 2020 Ford Mustang GT Join Date: May 2009 Location: El Segundo, CA iTrader: (1)	Is the rubbing sound being made when making sharp turns? This believe it or not is normal, however, BMW offers a friction modifier that will be put in your diffy at your first service. Regarding the second issue, I feel isn't a issue at all. It could be just some slack in the caliper. Dave __________________ 2020 Ford Mustang GT 6MT PP1 444rwhp (Sold)2013 M3 Coupe-MR/BLK ZCP, 2011 M3 Coupe-MR/Blk 2007 Porsche 997C2S Speed Yellow/Blk sport seats 2004 BMW M3 Imola/Blk
	Appreciate 0 Quote

02-13-2012, 01:13 PM	#7
M3PO Colonel 84 Rep 2,792 Posts Drives: '08 IB E92 Join Date: Sep 2011 Location: OC iTrader: (7)	I believe that the first "issue" is related to cold diff oil.
	Appreciate 0 Quote

02-13-2012, 04:00 PM	#10
SchnellM3 Digger 207 Rep 2,619 Posts Drives: 03 E46 M3 Join Date: Jun 2009 Location: Pa iTrader: (5) Garage List 2003 BMW E46 M3 Tra ... [8.00] 2009 BMW E92 M3 [8.30] 2009 Yamaha R1 (FOR ... [9.50]	Issue one has to be the diff, all of our cars do this. Also looks like you've already been hooked up with a link to it. __________________ 2009 E92 M3 /// Melbourne Red /// Fox Red /// M DKG Full Innotech Exhaust - DINAN Intake - IND Engine Bay Appearance - IND Hand Stitched Boot Covers - and much more....
	Appreciate 0 Quote