[KROOKEDking420]

so yea I just dropped like $700 bucks for new rotors pads and sensors from WWW.ECSTUNING.COM the rotors are the GEOMET slotted and cross drilled and I sued AKEBONO pads and they work wicked pissa but........ the car has had some ISSUES lately ( meaning water pump, thermostat, battery, new key FOB, starter, valve cover, then valve cover gasket, also had a steering column/ ignition lockout[ELM-CAS software fix] and while its down im doin a VANOS cleanin, oil filter housing gasket, and a RB PCV Valve .

-the car has been sittin unfortunately for 2 months or so and now the rotors are rusted after it rained awhile ago my question is why is this happenin? and what can I do to prevent this from happenin in the future if the car has to sit a period of time??

Thanks for any input u guys have

[peterparker]

Keep it in the garage and avoid water!


...Iron rotors, you really can't do much about it. Just drive it off!

[Wolf 335]

You can't be serious asking this?

My rotors rust after I wash my car man. It clears up once you drive.

If you're talking about the rotor hub, paint it and done.

[feuer]

All iron rotors will rust. There is no way around that. The car didn't sit for too long so is just surface rust and brake pads remove it.

[KROOKEDking420]

yes I just asked this it is just surface rust I know that I know drivin it will clear all rust I just never saw this with the factory ones and ive never had to let any car sit for so long effin BMWS thanks for the input guys

[feuer]

Well, not all iron rotor will rust at the same rate. It depends of the element content.

[BKV122]

Oxidation. Science bro

[Zoog]

Slotted and cross drilled will obviously show more rust than stock rotors. This can't be a serious thread. Common sense guys

[feuer]

Originally Posted by Zoog

Slotted and cross drilled will obviously show more rust than stock rotors. This can't be a serious thread. Common sense guys

Stock rotors could be slotted, cross drilled, dimpled and combination of them but that has nothing to due with the rust so your premise is invalid. Again, is the elements content in the iron. Depending of the mix some will rust more and some less.

[KROOKEDking420]

thanks guys ur help is appreciated I know it was a dumb question but I have never seen it one any decent set of rotors and I live in Boston so we see our fair share of rust up here but I wanted to know if there was an issue with the rotors from factory its all good tho now I know it will go away so no worries I have the worst luck with this car so I wouldn't have been shocked if they had some defect that's why I asked the community thanks again for easin my mind

[TBN54]

When you high as hell and you decide to post on the forums pt. 2

[Zoog]

Originally Posted by feuer

Stock rotors could be slotted, cross drilled, dimpled and combination of them but that has nothing to due with the rust so your premise is invalid. Again, is the elements content in the iron. Depending of the mix some will rust more and some less.

Stock rotors on 335s are not slotted or cross drilled from factory. So not sure what you are saying there and you do in fact see more rust as you have more exposed metal in cross drilled and slotted rotors it very much is common sense

[feuer]

Originally Posted by Zoog

Stock rotors on 335s are not slotted or cross drilled from factory. So not sure what you are saying there and you do in fact see more rust as you have more exposed metal in cross drilled and slotted rotors it very much is common sense

You said stock rotor and not stock rotor on 335i specifically.
I said stock rotor could be slotted, cross drilled, dimpled or combination.
For example m3 has stock cross drill rotors.
Now you premise:
stock m3 cross drilled will rust more than aftermarket blank rotor for 335i because there is more metal exposed.
Incorrect!
As I said twice already it will depend of the elements content in the iron.
How about that for common sense?

[Zoog]

Originally Posted by feuer

You said stock rotor and not stock rotor on 335i specifically.
I said stock rotor could be slotted, cross drilled, dimpled or combination.
For example m3 has stock cross drill rotors.
Now you premise:
stock m3 cross drilled will rust more than aftermarket blank rotor for 335i because there is more metal exposed.
Incorrect!
As I said twice already it will depend of the elements content in the iron.
How about that for common sense?

Are we not talking about a 335? Do I need to be that specific for you to pick it up? And here I will be more specific for you, rotors of the same metal, blank vs slotted and cross drilled, the blank will show less rust on them compared to the blank of the same metal. I'm not trying to start an argument but come on man

[KROOKEDking420]

Originally Posted by Zoog

Are we not talking about a 335? Do I need to be that specific for you to pick it up? And here I will be more specific for you, rotors of the same metal, blank vs slotted and cross drilled, the blank will show less rust on them compared to the blank of the same metal. I'm not trying to start an argument but come on man

I don't know where ur logic came from on this but there is less "metal" on the slotted and cross drilled than there is on the "blank" rotor( factory) im not sure if everyones getting confused or what but I thought it was a straight forward question I originally posted thanks for ur input tho

[KROOKEDking420]

Originally Posted by feuer

Stock rotors could be slotted, cross drilled, dimpled and combination of them but that has nothing to due with the rust so your premise is invalid. Again, is the elements content in the iron. Depending of the mix some will rust more and some less.

thanks I figured it had to do with the metals used in production but it didn't happen right away after it rained that's why I was concerned the stock rotors rusted pretty bad from sittin for a couple weeks at the body shop and when I got the car back I needed all new rotors and pads cuz they rusted so bad the piston in the caliper seized and the pads literally flaked off when I pulled them apart that's why I worry bout stupid shit like rust