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Discussion Starter · #1 ·
Right, this is a really, really trivial question but hey... the board is quiet today

Why is it that when you see Porche Carerra's and other similar cars with impressive brake setups, the discs are always shiny like crome or stainless steel? Is that because they are always new cars or is it to do with the material the disc is made out of, or do these people take the wheels off and polish the discs too?


I notice my nice new disks have a nice patina of rust on them already (except where the pads contact, of course) and I started wondering why this should be.

Thanks for listening to my rambling
 

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Alloy bells or zinc coated? I think my EBC Turbogroove disks that are fitted to my Elise have some sort of coating that slows corosion.
 

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The black diamond performance discs that elkparts do are phosphate coated to prevent corosion. It looks like the exposed part of the disc would be black though, rather than shiny
Kev
 

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Does it matter? I think it's more important that brakes cause you to stop than whether or not they look shiney.

It's probably just the case that the cars are only used as "fair weather" transport.
 
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