Joeitaly Posted July 5, 2005 Share Posted July 5, 2005 i have about 3500 miles on the car. ive noticed yellowish/orangy layers of something (maybe rust) form on the discs front and back. the front is more noticeable since they are bigger. but why is this occurring? after driving and braking they are gone when i park it, but when coming back out to the car that same stuff is there. this is probably a pretty naive post, but i am concerned a little. it just looks bad. kinda annoying too. i dont even live by the beach. so its not like salt is getting to it or anything. let me know... Link to comment Share on other sites More sharing options...
Guest *Jedimaster* Posted July 5, 2005 Share Posted July 5, 2005 Humidity will do it. It's harmless- ever look at them after you wash your car? It's just surface rust and nothing to worry about. Link to comment Share on other sites More sharing options...
PhilT Posted July 5, 2005 Share Posted July 5, 2005 It's nothing to worry about, all bare steel will rust to some degree, dependent on the humidity and temperature. It's called Flash Rusting. When the discs are hot, they will rust quicker than cold steel. If you wipe the disc with your finger nail, it should still be smooth under the dust. Double Award Winning Legacy GT Wagon Link to comment Share on other sites More sharing options...
Joeitaly Posted July 5, 2005 Author Share Posted July 5, 2005 well the humidity would explain it as i am in clearwater florida. it has been over 90 the entire past week and the humidity is rediculous. thanks alot for informing me. Link to comment Share on other sites More sharing options...
mach_six Posted July 5, 2005 Share Posted July 5, 2005 I don't drive my car for a few weeks and the rotors have rusted a lot. Link to comment Share on other sites More sharing options...
franklin Posted July 5, 2005 Share Posted July 5, 2005 i have about 3500 miles on the car. ive noticed yellowish/orangy layers of something (maybe rust) form on the discs front and back. the front is more noticeable since they are bigger. but why is this occurring? after driving and braking they are gone when i park it, but when coming back out to the car that same stuff is there. this is probably a pretty naive post, but i am concerned a little. it just looks bad. kinda annoying too. i dont even live by the beach. so its not like salt is getting to it or anything. let me know... They are iron. They oxidize/rust. As soon as you drive and apply the brakes its gone. Dont worry about it its normal. Link to comment Share on other sites More sharing options...
Deer Killer Posted July 5, 2005 Share Posted July 5, 2005 Spray some water on your rotors and watch for 5 minutes. Link to comment Share on other sites More sharing options...
Unilat Posted July 5, 2005 Share Posted July 5, 2005 This isn't the case as much anymore, but back in the day (on bikes), rust on the disk was a sign of high quality equipment. Makers who went for a highly rust resistant disk material ended up with disks that looked better, but had a lower coefficient of friction. The Brembos of the day would looked like sh1t after a rain, but they did the business - both because of a very high iron content. Link to comment Share on other sites More sharing options...
Xenonk Posted July 5, 2005 Share Posted July 5, 2005 Brake harder and get the rust off Keefe Keefe Link to comment Share on other sites More sharing options...
nKoan Posted July 5, 2005 Share Posted July 5, 2005 This isn't the case as much anymore, but back in the day (on bikes), rust on the disk was a sign of high quality equipment. Makers who went for a highly rust resistant disk material ended up with disks that looked better, but had a lower coefficient of friction. The Brembos of the day would looked like sh1t after a rain, but they did the business - both because of a very high iron content. Yeah, if you coat the disks with any anti-rusting agent they no longer are effective. They just don't grip as much as untreated bare steel. Link to comment Share on other sites More sharing options...
gfxdave99 Posted July 5, 2005 Share Posted July 5, 2005 Oh noes! Ask for brand new brakes now!!!! If everything seems under control, you're just not going fast enough. - Mario Andretti Link to comment Share on other sites More sharing options...
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