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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old 11-25-2013, 12:41 PM
kuchdut kuchdut is offline
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Location: Colorado
 
Join Date: Nov 2013
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Mein Auto: 335i xDrive
Rusty? Ya never know unless ya ask

A little less than a month ago, I purchased a 10m old 335xi...Love this damn car. Lusted after it for a while (the model, not THIS particular ride), and finally opportunity met ability.

that said, I'm still learning it. The entertainment system, the nav, the way it drives in the snow, the way it corners. The sounds it makes and maybe shouldn't make.

When I was washing it the other day, cleaning the wheels I noticed the attached pic. Seems a little early in the life of a vehicle to be experiencing rust...Wondering it this is something I should be concerned with.

This also got me thinking of a sound I hear when I get out of my car. I'm 6' 200 lbs...when I get out of the car I hear a a "springy" noise from the rear. I know car is rising up when I get out, but I don't recall hearing this noise on any other car I've owned.

These 2 things got me curious enuff to come here and ask people who know.

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  #2  
Old 11-25-2013, 01:41 PM
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bocabimmer bocabimmer is offline
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Location: South Florida
 
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Mein Auto: '06 E90 325i '07 E92 328i
Rusty? Ya never know unless ya ask

Looks like rust on your rotor. That's easily remedied when you replace your rotors. The rotors obviously won't have have anything to do with the squeaky suspension though.


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Old 11-25-2013, 06:34 PM
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BB_cuda BB_cuda is offline
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Mein Auto: 2011 335D Msport
Car only 10 months old you said. I wouldn't keep looking at that rust until rotor swap time. No sir. Pull off wheel. Clean with scrubber of your choice. Wash off residue. Heat with hair dryer to evaporate all the water off and paint that sucker with some gray rustoleum. The idea is to paint it cast iron color so flat silver works too. I also did the clips on the caliper as they were looking rusty too. My car had a short beginning of life in Pennsylvania so it got a taste of salt. Painted em' within a couple weeks of arrival to south Texas and haven't seen the ugly rust since. I hope you understand that i mean to paint the area inboard of where breakes engage rotor. I did the hub surface too. Let dry an hour or twoo before putting wheel back on.

On the other one: If i'm on any sort of incline an put the car in park while keeping foot on brake pedal. I also apply the E-brake while foot still on brake pedal. Then, i lift foot off and hear a short squeak. Very small roll happening in the brakes to find equilibrium. Does this sound like what you are hearing?

Last edited by BB_cuda; 11-25-2013 at 06:36 PM. Reason: always poor spelling
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Old 11-25-2013, 06:43 PM
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Zeichen311 Zeichen311 is online now
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Mein Auto: '11 335xi Sedan
Quote:
Originally Posted by kuchdut View Post
This also got me thinking of a sound I hear when I get out of my car. I'm 6' 200 lbs...when I get out of the car I hear a a "springy" noise from the rear. I know car is rising up when I get out, but I don't recall hearing this noise on any other car I've owned.
That's a normal BMW sound. It's caused by the parking brake assembly, which is inside the hats of the rear brake rotors, shifting slightly when you unweight the vehicle. Setting the parking brake while the car is still rolling slightly usually prevents it, if it bothers you.
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Old 11-25-2013, 07:44 PM
mikesevel mikesevel is offline
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Mein Auto: 328i convertible '08
Rusty ratty rotors!

Sure they look bad, especially if you have wheels with large openings.You can paint them with a cold galvanized paint or a high temperature engine paint. Rotors take abuse in normal driving, more in snow, salt, freezing temps, gravel roads etc.
Mikey
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Old 11-25-2013, 09:21 PM
kuchdut kuchdut is offline
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Location: Colorado
 
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Mein Auto: 335i xDrive
Thanks for all the info guys...Everything said here applies to me. The car lived for a while in North Carolina (I believe...certainly someplace much closer to the ocean that I am here in CO). The "springy" sound I hear is indeed more pronounced when I get out in my driveway, which has an pretty good incline to it (tho I do hear it on level surfaces as well).

Thanks again for all the input. I'm sure I'll be back for more. I hope to hold onto this one for a while.
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Old 11-25-2013, 09:29 PM
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tturedraider tturedraider is offline
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While the rust may be unattractive it is harmless surface rust, which is very common on such parts.
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Old 11-25-2013, 10:55 PM
Miller335 Miller335 is offline
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Mein Auto: 2007 E92
If my ebrake is on it does that when I get out of my e92.
Try not setting the ebrake once and see if that's the culprit.

My 07 only had 23k on it and I have similar rust also.
Figured when I get it on stands I'll take care of that.
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