Not joined yet? Register for free and enjoy features such as alerts, private messaging and viewing latest posts and topics.

Rear Brake Discs

Specific discussion about the E89 2009 Z4 (sDrive35is, sDrive35i, sDrive30i, sDrive23i)
Zedebee
Lifer
Lifer
Posts: 3396
Joined: Tue Sep 29, 2020 10:37 pm
Location: North Hampshire

Rear Brake Discs

Post by Zedebee » Thu Jan 25, 2024 10:15 am

Smartbear wrote: Thu Jan 25, 2024 9:29 am
Zedebee wrote: Tue Jan 23, 2024 12:53 am I have often wondered about brake disc “coating”. Doesn’t it just come off when you apply the brakes, or is it to protect the non-braking surface?
It’s to protect the unswept surface.
Rob
Ah, thank you Rob. I suppose you could apply a coat of lacquer to the same effect.
2003 Maldives Blue 3.0i auto
Previously: Maldives Blue 2.5i manual (its back!) and another, and a Monaco Blue 3.0Si coupe

Silverstar
Senior Member
Senior Member
Posts: 2738
Joined: Fri Jun 21, 2019 10:06 am
Location: Costa Del Sol

Rear Brake Discs

Post by Silverstar » Thu Jan 25, 2024 11:26 am

Zedebee wrote: Thu Jan 25, 2024 10:15 am
Smartbear wrote: Thu Jan 25, 2024 9:29 am
Zedebee wrote: Tue Jan 23, 2024 12:53 am I have often wondered about brake disc “coating”. Doesn’t it just come off when you apply the brakes, or is it to protect the non-braking surface?
It’s to protect the unswept surface.
Rob
Ah, thank you Rob. I suppose you could apply a coat of lacquer to the same effect.
I had the current discs painted. Looks way better than these coated discs!
2009 sdrive30i auto Sapphire Black / Coral Red

Online
Pondrew
Lifer
Lifer
Posts: 8522
Joined: Wed Jan 20, 2021 7:20 pm
Location: Spaldingski

Rear Brake Discs

Post by Pondrew » Thu Jan 25, 2024 11:46 am

I have painted a few disc hubs and outer edges with smooth Hammerite. It has always worked well and lasts a long time. Maybe we are not very aggressive with our braking in our house, as I was expecting the paint to burn off but it never has.
I paint brake calipers with Hammerite aswell. That works a treat. :)
All good things come to those who wait. I'm really impatient which explains a lot.

F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!

Dave 2 dogs
Senior Member
Senior Member
Posts: 1384
Joined: Tue Apr 03, 2018 7:29 pm

Rear Brake Discs

Post by Dave 2 dogs » Thu Jan 25, 2024 5:43 pm

Smartbear wrote: Thu Jan 25, 2024 9:29 amRed
Not much smaller than mine, but the price is quite steep 😬
IMG_0489.jpeg
IMG_0489.jpeg (257.06 KiB) Viewed 79 times

Post Reply