Rust on brake discs

[Snoopcousins]

I have found that leaving it even overnight I’ll always get the brown dust coming off the discs and dirtying the wheels

 

[KevM]

As Nickyyy alluded to earlier, if it's brown dust on your alloys and not black, you're doing 'car' all wrong

 

[MarkM]

As Nickyyy alluded to earlier, if it's brown dust on your alloys and not black, you're doing 'car' all wrong

If you don’t daily it you’re going to get rustdust, I don’t know what BMW make discs from but they bloody rust with a slight breeze!

 

[cauld1]

Clearly only one reasonable solution....



Fit carbon ceramics

 

[MarkM]

Clearly only one reasonable solution....



Fit carbon ceramics

Would love to, but even used they’re £6k

 

[anlygi]

Any suggestions for painting rusty bells black? I see POR15 quoted a few times, also hammerite, is it just a case of wire brush, paint on then leave to dry? Nothing else in top? Also daft question, I assume I don't paint the front contact surface?!

I got black coated front discs but the coated rears were out of stock when I did the brakes about 6 months ago, so I went with uncoated Brembos, and the bells now look like crap compared to the front.

 

[Ian A]

Any suggestions for painting rusty bells black? I see POR15 quoted a few times, also hammerite, is it just a case of wire brush, paint on then leave to dry? Nothing else in top? Also daft question, I assume I don't paint the front contact surface?!

I got black coated front discs but the coated rears were out of stock when I did the brakes about 6 months ago, so I went with uncoated Brembos, and the bells now look like crap compared to the front.

I use this stuff. Tried it when Halfords was the only open option, surprisingly great job and lasts ages. Light wire brush and straight on.

Halfords Very High Temperature Paint Black 300ml | Halfords UK

Shop the latest Halfords Very High Temperature Paint is formulated to withstand temperatures of up to 500°C. at Halfords UK

www.halfords.com

Poor pic from years back, but you get the idea. Also a pet peave having rusty discs.

 

[Coog]

I used POR15 on the Porsche ones years ago when I replaced them and they were still fine when I sold it.

 

[anlygi]

Thanks chaps.

 

[richie_mck]

Hammerite satin spray

 

[Boydie]

I did mine with hammerite I think back in April 2020 - still good!

Audi S3 8V

Finally got round to fitting my centre console which has been sitting in my garage/attic for the last 2 years. Looking back, I’ve had so many opportunities to fit this but just never bothered. Anyway... Thought I’d take the seats out and clean out underneath. This would also give me more room...

rmsmotoring.com

 

[mike150]

I just drive every car I get in for detailing at low speed down my concrete lane and left foot brake to get the discs warm and dry.

Drilled discs rot if you don't dry them well and you leave a car sitting, also no matter what you spray on you can't get into the back face of the disc.