Porsche Brakes Rusting

[NA55]

Apologies in advance for the newbie type question but after doing a few searches wanted to get the opinion from the people in the know...

recently i have noticed that the brake rotors on my cayman s are pretty brown in colour (i.e. rusted/rusting), i also know that a spirited drive and some hard braking can remove most of this but dont see the point as overnight they just rust again. I should state that the car is parked outside and with the wet weather we have recently i am not sure of how to keep the rust removed, just concerned as i have a service due soonand sont want to be stuck with a bill for new brakes as the brakes seem to function effectively

[chris7676]

Just try to drive it every several days and it should be fine - that's my experience with (annoying) drilled disks in both the Coxster and the Elise.

[bob'5]

Discs will always have light surface rust when exposed to moisture. No getting away from that. Regular use will stop any lasting rust from setting in though

[160tim]

If you specced the car with discs instead of rotors you'd find they wouldn't rust as quick !

[anonymous-user]

Spray them with oil, should keep the rust at bay.

On a serious note , the discs are a high carbon steel and show surface rust very quickly.

Unavoidable consequence of the material used and moisture in the air.

[Biker's Nemesis]

Err, don't spray them with oil! General use as others have said, nothing at all to worry about.

[SonnyM]

Mine stopped rusting since I started driving the car after every wash to dry them.

[pete.g]

Go to your OPC - they'll replace them as often as you like!

[NA55]

Thanks for the feedback, i will just have to put up with taking it for a drive every other day...
Its a small annoyance to put up with

[anonymous-user]

Biker's Nemesis said:

Err, don't spray them with oil! General use as others have said, nothing at all to worry about.

Really? No oil?

[bqf]

drmark said:

Biker's Nemesis said:

Err, don't spray them with oil! General use as others have said, nothing at all to worry about.

Really? No oil?

Seriously, there are a huge numbers of custard-heads out there who may read this, and start squirting 3-in-1 on their brake discs. The general public are a danger to themselves.

DON'T SQUIRT YOUR DISCS WITH OIL!

[Martian O]

Or buy ceramics next time!

[anonymous-user]

bqf said:

Seriously, there are a huge numbers of custard-heads out there who may read this, and start squirting 3-in-1 on their brake discs. The general public are a danger to themselves.

DON'T SQUIRT YOUR DISCS WITH OIL!

True - scary isn't it.

[Magic919]

Waitforme said:

Spray them with oil, should keep the rust at bay.

On a serious note , the discs are a high carbon steel and show surface rust very quickly.

Unavoidable consequence of the material used and moisture in the air.

Are they really high carbon steel and not cast iron?

[6C4GTS]

Martian O said:

Or buy ceramics next time!

Extra virgin olive oil for the expensive PCCB??

[anonymous-user]

Magic919 said:

Are they really high carbon steel and not cast iron?

Correct - they are cast iron.

Edited to add that high carbon steel is cast iron

Edited by drmark on Thursday 5th January 15:33

[SonnyM]

6C4GTS said:

Martian O said:

Or buy ceramics next time!

Extra virgin olive oil for the expensive PCCB??

WD40 works a treat on ceramics.