Rusting Discs

P

Parfect

New member
Does anyone else’s discs rust whilst washing their car? I find mine rusting before I even finish washing it. I’ve never had a car that this has happened on before.
 

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I spray mine with bilt hamber "Atom Mac" read about it on their web site. You can also wipe on with a rag it does work....and does not effect brakes or pads...
 
Happens on my Range Rover as well. Must be a JLR thing. Atom mac is good, only use it if the car is being on Sorn. Oh that's about half a year :lol:
 
I've seen it on all cars - even my Honda.
I don't think it's actual rust, as rust won't go away after driving. It could be quick oxidation of the brake pad compound.
 
Washed mine today at DIY car wash in Garforth. I used the hot soapy lance 1st & immediately noticed the bronzy look on the discs. Probably a result of water/ soapy water quenching the hot discs.
 
I've complained to JLR about this, their response was that all discs do it....which if you have more than an F type you will clearly see that they don't all rust as fast as an f types do.

I even had the service manager out showing him after they had washed it with plain water you could see it discolour in real time....he raised a Technical report with JLR ....to not surprising zero effect !
 
santoshlv426 said:
I've seen it on all cars - even my Honda.
I don't think it's actual rust, as rust won't go away after driving. It could be quick oxidation of the brake pad compound.
Click to expand...
Yes it’s rust, albeit ultra thin surface layer that is brushed off with a few of revs of the disk.
 
Used to get this on my 911, Porsche's reason was they use high carbon content iron for the disc's hence more rust, Snake oil and all that!
Think with any performance car the discs are bigger and the wheels tend to have larger openings between the spokes so its more noticeable than on a Fiesta or similar, drive it after washing to dry and remove it from discs is the trick before putting it away again.
 
I wouldn't worry about the bronzing at washing. My car stands still for days.. :shock:

And I can see from the kitchen straight into the wheels and discs : they stay shiny for days, even in rain.
Rust kicks in after 4 odd days, but just slight braking cleans it off again.. :P
 
"Bronzing" sounds so much better than "rusting"! :D
Mine also stay shiny during its "no-move" days.
 
All cars do this - my BMW's, my Mercedes, my Ford...it's not rust as such and as others have said, it is nothing to worry about.
 
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