Please tell me what this noise is!

Rabid Panda · 09-28-2011, 02:00 PM

The sound in the vid is a little off, but if i had to describe it to someone...it sounds like the sound snow makes when your walking in it...you know, that crunching sound... All 4 make this noise, the left rear is the most pronounced. HELP!! Yes, they are Run Flat...

[

chickdr · 09-28-2011, 02:09 PM

I would check the wheel bearings.

estrovpa1 · 09-28-2011, 02:22 PM

Brake caliper seized on rotor?

Rabid Panda · 09-28-2011, 04:32 PM

I thought it might be a bearing, but if that were the case, wouldn't the sound still be present with the car up on a stand? I just did a brake overhaul, it made the sound before hand. It really sounds like walking in snow, or maybe rubbing your fingers on a wet piece of rubber...you know, how it makes that squeak kinda sound...
I am convinced it's the RF tires. I have looked around on various forums, and i see that there are mixed feelings when it comes to RF's....possible defect?

Was hoping someone else has heard the same sound...If its normal, then what ever, but if it isn't... ugh...

I love this car!!!...but mine is a money pit! Thank god i can do most of my own work, i feel sorry for those who have to go to the ripoffship.

Rabid Panda · 10-17-2011, 04:12 PM

""Update""

This is the sound of an under-inflated run flat tire. Thanks to a faulty Tire pressure gauge, i was about 5psi low. Got new gauge, filled them up, correctly...no more sound.

ZStig · 10-17-2011, 04:41 PM

was your door open while driving?

WAMz4 · 10-18-2011, 01:44 AM

Quote:

Originally Posted by Roffle Waffle

was your door open while driving?

Saw that one coming.

Stromtech · 10-18-2011, 03:18 AM

Quote:

Originally Posted by Rabid Panda

""Update""

This is the sound of an under-inflated run flat tire. Thanks to a faulty Tire pressure gauge, i was about 5psi low. Got new gauge, filled them up, correctly...no more sound.

I believe you have an 03. Mine is an 04 and it's my understanding that tire pressure on these years is monitored using the abs wheel speed sensors. The system detects changes in wheel speed to determine pressure loss. The system does not detect small pressure losses well. My alarm and light did not warn me until one tire had dropped 5 pounds... so while it is useful to have a warning system in the case of a puncture it is not a good substitute for checking tire pressure with a good guage.
What guage did you replace?

chickdr · 10-18-2011, 08:56 AM

I assume this is a RFT issue. I have never had tire noises like the OP with a 5psi drop in pressure on standard tires. The only way I know it is low is to check pressures. the car drives the same.

chastoes · 10-27-2011, 09:22 PM

Yes, I've noticed the 5 lbs & that is quite alot on this tyre, and ABS sensor is quite sensitive but +/- 2lbs

Rabid Panda · 12-02-2011, 09:45 PM

I have NO idea what your talking about Roffle!

Don't worry, deserted road, mindful passenger, and seat-belted in,

Rabid Panda · 12-02-2011, 09:50 PM

I'm getting rid of the RFT... They are so "quirky"... I had the right rear go down, took it in, no puncture at all... Put air in it, haven't had a problem since.

ZStig · 12-03-2011, 10:52 AM

Make sure the sidewall that tire that was flat is OK on the INSIDE. Easiest way to do it is my shaking the wheel/tire on and listening for little tire particles bouncing around inside

09-28-2011, 02:00 PM	#1
Rabid Panda Enlisted Member 2 Rep 36 Posts Drives: 2003 Z4 E85 Join Date: Feb 2011 Location: USA iTrader: (0)	Please tell me what this noise is! The sound in the vid is a little off, but if i had to describe it to someone...it sounds like the sound snow makes when your walking in it...you know, that crunching sound... All 4 make this noise, the left rear is the most pronounced. HELP!! Yes, they are Run Flat... [
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09-28-2011, 02:09 PM	#2
chickdr Lieutenant Colonel 140 Rep 1,990 Posts Drives: 2006 M Roadster Join Date: May 2009 Location: Buford, GA iTrader: (0)	I would check the wheel bearings.
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09-28-2011, 02:22 PM	#3
estrovpa1 New Member 1 Rep 16 Posts Drives: Z4 2003, 535i 2008 Join Date: Sep 2011 Location: Philadelphia, PA iTrader: (0)	Brake caliper seized on rotor?
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09-28-2011, 04:32 PM	#4
Rabid Panda Enlisted Member 2 Rep 36 Posts Drives: 2003 Z4 E85 Join Date: Feb 2011 Location: USA iTrader: (0)	I thought it might be a bearing, but if that were the case, wouldn't the sound still be present with the car up on a stand? I just did a brake overhaul, it made the sound before hand. It really sounds like walking in snow, or maybe rubbing your fingers on a wet piece of rubber...you know, how it makes that squeak kinda sound... I am convinced it's the RF tires. I have looked around on various forums, and i see that there are mixed feelings when it comes to RF's....possible defect? Was hoping someone else has heard the same sound...If its normal, then what ever, but if it isn't... ugh... I love this car!!!...but mine is a money pit! Thank god i can do most of my own work, i feel sorry for those who have to go to the ripoffship.
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10-17-2011, 04:12 PM	#5
Rabid Panda Enlisted Member 2 Rep 36 Posts Drives: 2003 Z4 E85 Join Date: Feb 2011 Location: USA iTrader: (0)	""Update"" This is the sound of an under-inflated run flat tire. Thanks to a faulty Tire pressure gauge, i was about 5psi low. Got new gauge, filled them up, correctly...no more sound.
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10-17-2011, 04:41 PM	#6
ZStig instagram 997turbotom 279 Rep 7,377 Posts Drives: Interlagos Z4MR Join Date: Jun 2008 Location: Delray Beach, FL iTrader: (4)	was your door open while driving? __________________
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10-18-2011, 08:56 AM	#9
chickdr Lieutenant Colonel 140 Rep 1,990 Posts Drives: 2006 M Roadster Join Date: May 2009 Location: Buford, GA iTrader: (0)	I assume this is a RFT issue. I have never had tire noises like the OP with a 5psi drop in pressure on standard tires. The only way I know it is low is to check pressures. the car drives the same.
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10-27-2011, 09:22 PM	#10
chastoes New Member 3 Rep 8 Posts Drives: 2003 Z4 with Z8 body Join Date: Oct 2011 Location: El Cerrito iTrader: (0)	Yes, I've noticed the 5 lbs & that is quite alot on this tyre, and ABS sensor is quite sensitive but +/- 2lbs
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12-02-2011, 09:45 PM	#11
Rabid Panda Enlisted Member 2 Rep 36 Posts Drives: 2003 Z4 E85 Join Date: Feb 2011 Location: USA iTrader: (0)	I have NO idea what your talking about Roffle! Don't worry, deserted road, mindful passenger, and seat-belted in,
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12-02-2011, 09:50 PM	#12
Rabid Panda Enlisted Member 2 Rep 36 Posts Drives: 2003 Z4 E85 Join Date: Feb 2011 Location: USA iTrader: (0)	I'm getting rid of the RFT... They are so "quirky"... I had the right rear go down, took it in, no puncture at all... Put air in it, haven't had a problem since.
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12-03-2011, 10:52 AM	#13
ZStig instagram 997turbotom 279 Rep 7,377 Posts Drives: Interlagos Z4MR Join Date: Jun 2008 Location: Delray Beach, FL iTrader: (4)	Make sure the sidewall that tire that was flat is OK on the INSIDE. Easiest way to do it is my shaking the wheel/tire on and listening for little tire particles bouncing around inside __________________
	Appreciate 0 Quote