Purezazn Neutral Newbie February 2, 2011 Share February 2, 2011 What is the reason ? i often saw those cars with rusty brake disk ... from what i know is not cause by rain , else my car would have those rusty brakes too ... someone enlighten me pls ? Happy chinese new year ! ↡ Advertisement Link to post Share on other sites More sharing options...
Beehive3783 Turbocharged February 2, 2011 Share February 2, 2011 ALL brakes rotors have this problem after parking overnight in humid weather, or parking outdoors in wet weather after the rain stops. Link to post Share on other sites More sharing options...
Tigershark1976 Turbocharged February 2, 2011 Share February 2, 2011 What is the reason ? i often saw those cars with rusty brake disk ... from what i know is not cause by rain , else my car would have those rusty brakes too ... someone enlighten me pls ? Happy chinese new year ! huuh?? u mean ur brake disk doesnt show any rust stain b4?? Link to post Share on other sites More sharing options...
Ken4555 1st Gear February 2, 2011 Share February 2, 2011 What is the reason ? i often saw those cars with rusty brake disk ... from what i know is not cause by rain , else my car would have those rusty brakes too ... someone enlighten me pls ? Happy chinese new year ! do a search has been discussed before... iron will rust... period... reason why sometimes dont rust is because probably just parked, so the disc very hot water evaporated... if stationary parked for hours then rain, sure rust... Link to post Share on other sites More sharing options...
Hamburger Hypersonic February 2, 2011 Share February 2, 2011 becasue its cast iron and they rust readily Link to post Share on other sites More sharing options...
JaydenSTI 1st Gear February 2, 2011 Share February 2, 2011 brake disc will not rust easily unless it was left untouch for month. those bronze/yellowish colour rotor you see day in day out is the rust of brake dust................... Link to post Share on other sites More sharing options...
Ben5266 Supercharged February 2, 2011 Share February 2, 2011 (edited) Ok.. This one won't rust. The name is CCB. (alamak... what a name) http://www.edmunds.com/car-technology/cera...ite-brakes.html Edited February 2, 2011 by Ben5266 Link to post Share on other sites More sharing options...
GLZT 6th Gear February 2, 2011 Share February 2, 2011 Then wont the rotors get thinner and thinner over time? Since the top layer is always getting rusted and scrape off when brakes are applied. This proccess will keep repeating right? Link to post Share on other sites More sharing options...
Ben5266 Supercharged February 2, 2011 Share February 2, 2011 Then wont the rotors get thinner and thinner over time? Since the top layer is always getting rusted and scrape off when brakes are applied. This proccess will keep repeating right? Should be the brake pad gets thinner, because it is softer material. Link to post Share on other sites More sharing options...
Tigershark1976 Turbocharged February 2, 2011 Share February 2, 2011 (edited) yes, infact, even it doesnt rust, it will get thinner over time. when brake is applied, the brake pad will touch the rotor to create friction in terms to stop the wheel... the friction will cause wear on both brake pad n rotor, brake pad will worn faster because its a softer material n rotor will worn slower...... Edited February 2, 2011 by Tigershark1976 Link to post Share on other sites More sharing options...
JaydenSTI 1st Gear February 2, 2011 Share February 2, 2011 yes, infact, even it doesnt rust, it will get thinner over time. when brake is applied, the brake pad will touch the rotor to create friction in terms to stop the wheel... the friction will cause wear on both brake pad n rotor, brake pad will worn faster because its a softer material n rotor will worn slower...... chances are you will get a warped rotor before it get too thin...... Link to post Share on other sites More sharing options...
Kiadaw 6th Gear February 2, 2011 Share February 2, 2011 What is the reason ? i often saw those cars with rusty brake disk ... from what i know is not cause by rain , else my car would have those rusty brakes too ... someone enlighten me pls ? Happy chinese new year ! Because they are not using ceramic brakes meh. Link to post Share on other sites More sharing options...
Nf0rc3r 1st Gear February 2, 2011 Share February 2, 2011 Then wont the rotors get thinner and thinner over time? Since the top layer is always getting rusted and scrape off when brakes are applied. This proccess will keep repeating right? Rust FORMS on top of the brake discs. Not the top layer of brake discs become rust. Link to post Share on other sites More sharing options...
GLZT 6th Gear February 2, 2011 Share February 2, 2011 Rust FORMS on top of the brake discs. Not the top layer of brake discs become rust. I don't get what you meant, if you are correcting my english. I meant the surface of the rotors when I said top layer. Or are you trying to say things dont get rusty but rust forms on the surface of metal instead? Link to post Share on other sites More sharing options...
Happily1986 5th Gear February 2, 2011 Share February 2, 2011 Rust FORMS on top of the brake discs. Not the top layer of brake discs become rust. So where does the Iron that is part of the Iron Oxide i.e. rust coming from? Not from the brake disc's surface then from air?? Like that i build a large condenser unit to collect iron oxide from air and then reduce the rust to produce iron liao lor. makes tonnes of $$$$. Link to post Share on other sites More sharing options...
Flykite Clutched February 2, 2011 Share February 2, 2011 chances are you will get a warped rotor before it get too thin...... yes it is true, and for my combo the brake disc rotors are cheaper than the brake pads... Link to post Share on other sites More sharing options...
Hamburger Hypersonic February 2, 2011 Share February 2, 2011 brake disc will not rust easily unless it was left untouch for month. those bronze/yellowish colour rotor you see day in day out is the rust of brake dust................... I have no idea what you are talking about Link to post Share on other sites More sharing options...
Nemo6089 1st Gear February 2, 2011 Share February 2, 2011 Because they never use their brakes :D ↡ Advertisement Link to post Share on other sites More sharing options...
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