Disc rotor paint?

[sprinta]

Does anybody know what paint is used for the disc rotor centers on the ST1100? Is it silver or aluminium? Is it a satin or 'flat' finish? Any suggestions as to what can be used?

Picture is just example of discs I am referring to.

[ST1100]

Is it silver or aluminium?

Actually glass blasted steel (cause the mat centre section might collect rust if totally neglected ), except those models/years where the spoked area is painted in mat gold metallic.
I use an old toothbrush with a dab chrome-polish to get those spokes back to shape and they hold up/rust free quite well, so never painted some (at ~120Tkm/75Kmiles they "expire" anyway, so not worth the hustle...  )
Hint: don't forget the paper-spacers when bolting them back on the wheel!

[sprinta]

Is it silver or aluminium?

Actually glass blasted steel (cause the mat centre section might collect rust if totally neglected ), except those models/years where the spoked area is painted in mat gold metallic.
I use an old toothbrush with a dab chrome-polish to get those spokes back to shape and they hold up/rust free quite well, so never painted some (at ~120Tkm/75Kmiles they "expire" anyway, so not worth the hustle...  )
Hint: don't forget the paper-spacers when bolting them back on the wheel!

Hi

Thanks for the reply. So that is why they go rusty!

I always thought they were painted, hence my question. I will try your advice of chrome polish (Solvol?) but I guess you will loose the matt finish with polishing?

[ST1100]

So that is why they go rusty!

LOL! 

I will try your advice of chrome polish (Solvol?) but I guess you will loose the matt finish with polishing?

Not when you gently rub by hand; their quite good steel, so it's only surface-rust that comes off easily.
One could also use toothpaste, or the white, gentle abrasive household cleaning milk (Jif cream?)
Dunno what products you've avail, I used some green chrome polish which contains conservation wax, so they hold up nicely for a year.
Just see to wipe the friction surface clean afterwards