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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 05-25-2005, 05:06 PM   #1
sozm3
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Loud scratching noise from front passenger wheel?

Hello, I asked this question over at the M3forum.com. I just wanted to see if anyone here had any info on the noise I am having. I was driving my car the other night and made a left hand turn onto my street. All of the sudden I hear a loud scratching sound soming from the front passenger wheel. As I make a right into my alley it gets annoyingly loud. It continued to do it when I made another left into my driveway. It actually woke my girlfriend up inside the house it was so loud. This noise never happened before. So I had to take the car for another ride around the block, it made the noise but not very loud. I hit a few bumps and the noise was gone. I drove it all day yesterday and still not the same loud noise. But when I do make left hand turns, with the window down I can hear the front passenger wheel making a slight scratching sound kinda like my break pads were gone and it was rubbing on the rotors. BUT, thats not it. My break pads are fine. I hope its nothing like the PSS9 coils that have problems. I had them and a set of 19 inch iforged rims put on almost 2 months ago. So I dont think it has to do with either one of those. Any suggestions would be great.
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Old 05-25-2005, 05:54 PM   #2
gpoints
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I have a similar noise comming from my driver's side rear. Now I've got a groove in my rotor. Not sure what caused it so we'll see what the dealership says next week.
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Old 05-25-2005, 05:57 PM   #3
sozm3
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Quote:
Originally Posted by gpoints
I have a similar noise comming from my driver's side rear. Now I've got a groove in my rotor. Not sure what caused it so we'll see what the dealership says next week.
A few people told me that the noise could be caused from a rock or pebble stuck between the backing plate and the brake caliper. I am hoping thats what it is and not something too serious. Maybe that could be your problem?
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Old 05-25-2005, 06:03 PM   #4
gpoints
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Quote:
Originally Posted by sozm3
A few people told me that the noise could be caused from a rock or pebble stuck between the backing plate and the brake caliper. I am hoping thats what it is and not something too serious. Maybe that could be your problem?
Could be...

I will be pissed if it is though. I initially took my car in for this problem almost 8 mounths ago. They told me they couldn't hear the noise (it is intermittent). They also said they took it apart and didn't find anything. Well, there's obviously something wrong as there's a groove in my rotor.
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Old 05-25-2005, 06:06 PM   #5
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Quote:
Originally Posted by gpoints
Could be...

I will be pissed if it is though. I initially took my car in for this problem almost 8 mounths ago. They told me they couldn't hear the noise (it is intermittent). They also said they took it apart and didn't find anything. Well, there's obviously something wrong as there's a groove in my rotor.
Have you looked at your rotors closely if you see any deep grooves?
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Old 05-25-2005, 06:08 PM   #6
gpoints
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Quote:
Originally Posted by Deeviate
Have you looked at your rotors closely if you see any deep grooves?
Yup, there's one in my driver's side rear rotor. I've got an appt Tues at the dealership. I don't see what would case the groove though. I mean there's still a good amount of pad left...

edit: sozm3, I'm not trying to HiJack your thread.
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Old 05-25-2005, 06:10 PM   #7
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So far I havent seen any grooves in my rotors. Im just hoping its something simple and nothing that has to do with the coilovers. Because I know the BMW dealer is not going to cover something that has to do with the coilovers.
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Old 05-25-2005, 06:26 PM   #8
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It's the differential. They took care of it in my car. Right now I only heard a slight noise, but it's getting better as it adapts to the new differential fluid. They might put the wrong differential fluid in your car. Have them check it. On mine, it only makes that stupid noise for slow sharp left turns.

and I found out that my brake callipers are corroting. are they normal? Any suggestion?
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Old 05-25-2005, 06:33 PM   #9
sozm3
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Quote:
Originally Posted by bengwie
It's the differential. They took care of it in my car. Right now I only heard a slight noise, but it's getting better as it adapts to the new differential fluid. They might put the wrong differential fluid in your car. Have them check it. On mine, it only makes that stupid noise for slow sharp left turns.

and I found out that my brake callipers are corroting. are they normal? Any suggestion?
Why would the differential be making a noise that comes from my front passenger side wheel?? I would think the noise would come from the rear of the car if it was the differential? As far as your calipers corroting, I have no idea. Mine seem to get a bit or rust on them after rain, but as soon as I drive the car everything is good and rust free again.
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Old 05-25-2005, 07:33 PM   #10
bengwie
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The noise on my car comes from the rear driver sides. Don't know about yours if it is front one. Good luck!
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Old 05-25-2005, 10:43 PM   #11
sozm3
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Quote:
Originally Posted by bengwie
The noise on my car comes from the rear driver sides. Don't know about yours if it is front one. Good luck!
Well if it is the differential Im glad its happening now because my warranty is up january of 2006. So I guess its better if something goes wrong now then later. But I just hope its nothing too serious.
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Old 05-26-2005, 08:19 AM   #12
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I just had this problem with my lexus, If the noise sounds like a metal on metal scraping only when your turn the wheel. Its the ball joint on the control arm. I've seen alot of problems with this this winter. I think its from all the snow and salt (get into the ball joint and dry's it out) Not bad at first but gets progessivly worse. Eventually car will squeek even on bumps and steering will become more difficult to turn. Once this occurs change the ball joint immediatly. Serious problems can occur. I was driving on the highway and i had put off the problem too long and the ball joint had completely lost lubrication. Hit a small bump next thing i know the ball joint disconnected from the control arm and my wheel came flying off my car. Had considerable body damage to right front fender, wheel and tire.
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Old 05-26-2005, 10:37 AM   #13
sozm3
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Quote:
Originally Posted by GJPizzo
I just had this problem with my lexus, If the noise sounds like a metal on metal scraping only when your turn the wheel. Its the ball joint on the control arm. I've seen alot of problems with this this winter. I think its from all the snow and salt (get into the ball joint and dry's it out) Not bad at first but gets progessivly worse. Eventually car will squeek even on bumps and steering will become more difficult to turn. Once this occurs change the ball joint immediatly. Serious problems can occur. I was driving on the highway and i had put off the problem too long and the ball joint had completely lost lubrication. Hit a small bump next thing i know the ball joint disconnected from the control arm and my wheel came flying off my car. Had considerable body damage to right front fender, wheel and tire.
Thanks for the response. But I have one more question for you. If it is the ball joint do you believe that BMW will replace it under warranty even though I have coilovers installed? The reason I ask is because the coils have only been on for like 2 months so I cant see them causing the damage to the ball joints?
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Old 05-26-2005, 01:39 PM   #14
GJPizzo
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Quote:
Originally Posted by sozm3
Thanks for the response. But I have one more question for you. If it is the ball joint do you believe that BMW will replace it under warranty even though I have coilovers installed? The reason I ask is because the coils have only been on for like 2 months so I cant see them causing the damage to the ball joints?

I'm not sure what BMW's warranty is for the suspension. you might have to read up on that in your manual. I'm sure if it is the ball joint it has nothing to do with the suspension upgrades you have made, but Dealers make excuses for anything. Regardless if it voides the warranty they might say that it was damaged during the installation process and they might make you pay for it. I changed the ball joing my self on the lexus it is not difficult at all. On my lex there are 4 bolts. One going through the ball joint. 2 on the control arm and 1 on the tie rod. just remove those bolts and the rotor and hub should slide right off of control arm and tie rod leaving the ball joint free. ball joint slides right off, replace it and put everything back together.

You can do this in your drive way. Just jack up the car and remove your tire. Whole process should take 30-45 min. The two bolts on the tie rod and ball joint should have saftey pins on them too. All you need is a socket wrench set probably size 13 or 14mm. And maybe a regular wrench same size.

My dad owns an autopart store so I got my balljoint at wholesale price which is about $40-$50. Not sure what the price for BMW is maybe a little more expense.
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Old 05-26-2005, 02:00 PM   #15
gpoints
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Quote:
Originally Posted by GJPizzo

You can do this in your drive way. Just jack up the car and remove your tire. Whole process should take 30-45 min. The two bolts on the tie rod and ball joint should have saftey pins on them too. All you need is a socket wrench set probably size 13 or 14mm. And maybe a regular wrench same size.
I've never done a ball joint on a BMW but I've done it on cars that have the Ball Joint pressed into the control arm. If our BMW's have the Ball Joints pressed into the arm this is not a 30 - 45 minute DIY... You will need to rent a ball joint press and even with this tool the job can be a major PITA. Also, renting the tool can be tough due to limited availablity.
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Old 05-26-2005, 02:26 PM   #16
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I am not very mechanically inclined so if the ball joints needed to be replaced I would probably have to have a shop do it for me. But I am really hopgin its not the ball joints because I doubt BMW will replace them for free since I have the coils on there. Does anyone have any idea what the ball joint plus install may cost?
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Old 05-26-2005, 03:03 PM   #17
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I had a similar sound. The dust plate or whatever it is behind the rotor was loose, and rubbing against the rotor under hard turning.
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Old 05-26-2005, 03:06 PM   #18
sozm3
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Originally Posted by My1stM3
I had a similar sound. The dust plate or whatever it is behind the rotor was loose, and rubbing against the rotor under hard turning.
Well I just got home na dit just did it again. I was coming up to a red light and it started scratching like hell very loud again. It was a metal to metal sound. I wasnt going fast at all and I was slightly hitting the breaks. It lasted like 5-10 seconds of scratching and then all of the sudden it stopped? I wasnt making any turns this time just going in a straight line. Any clues?
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Old 05-26-2005, 03:54 PM   #19
My1stM3
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Yea, somtimes it happen to me to without turning. Id say somthing stuck between the rotor and the dust plate, or the plate is just rubbing against the rotor itself. But, im not a mechanic by far. Id just bring it in to the dealer.
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Old 05-26-2005, 04:44 PM   #20
sozm3
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Quote:
Originally Posted by My1stM3
Yea, somtimes it happen to me to without turning. Id say somthing stuck between the rotor and the dust plate, or the plate is just rubbing against the rotor itself. But, im not a mechanic by far. Id just bring it in to the dealer.
THank you for the help. I hope its just something rubbing like a pebble or something. I have an appointment to bring the car on thursday the 2nd to get it checked out. But Im just sfraid they are going to blame the coilovers on something and then I will be screwed. But hopefully thats not the case.
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