Rusty Rotors: What Causes Rust Jacking on Rotor Inboard Only? 

Just had this happen on my moms 2009 ford edge sel. Interesting that I see an edge in the video and other commenters with edges. My mother drives only 1 km to work and back so it does fit the description in this video of not being driven. I purchased coated Brembo rotors and Bosch ceramic pads , fully cleaned and greased the pins and cleaned the boots. I also wire brushed and cleaned and put a antisieze on the pad guides and used synthetic grease on the contact points for the pads. I’m quite ocd about these things but I believe I know what the issue is. I believe the issue is aftermarket pads fitting too tight into the guide clips. Even with the grease in place I think once heated up when braking these pads basically wedge into the clips and make the issue worse getting stuck in place. Going forward I will dremel and machine the pad tabs to make sure there is a slight amount of free play between the pad tabs and the shims/guides hopefully preventing them from seizing in place

Huge thanks! I just got my 21 VW arteon on a mid February with only 22k on it, my rear breaks are bad already, and now I’m pretty sure why, I contacted already dealer and asked them if they’re ok to split the cost of expenses, cause I noted that when fist test drive the car and pointed on that, they told me it’s should be gone soon , it’s just because the car haven’t been drove much … so, looking forward to get new breaks🙏🏼

Nice explanation - thanks! But most drivers just don't have much experience or trust in themselves to maintain their cars - too bad. Salty roads do make money for some, might save lives, but what a cost in total...hm...

excellent video with explanation, friends ford edge has the exact same problem even though i thoroughly cleaned below the anti-rattle clip and applied brake grease, shows the importance of doing a brake service more frequently.

I doubt fully coated rotors will help to prevent this, since the coating is not in the breaking surface. I doubt it is the moisture either. I have the same problem on outside side, while inside is ok. The seized pad and/ it pins is probably the cause

Great Description Of how brakes get to Rusty, thank you.

Great video very helpful 👍 thanks

I can't believe there are only 4 comments on this. This video really spills the beans on why many luxury cars have costly brake jobs at 20-30k kms. Its really premature but the cause appears to be exactly what the tech says in the video - not driving far enough. Sounds counter intuitive but it seems like the you almost have to ride the brakes to get them up to temp so they can evaporate any moisture still left on the rotor faces.

Really handy!! Thanks 🙏

Good info thanks

If the pads somehow were always allowed to move freely would the rotor still rust as we see it? OR, is the fact that the pads do freeze up, and then they don't wipe the rotor surface much, or at all, the main reason why the rotor surface rusts?

This is the problem on my 750i... outside of the rotor looks great, inside is corroded. Assume they have to be replaced then eh? Car isn't driven too much at all, ~40K miles, 2017. Thanks for the video.

I have the same problem, only on the outside. There's 2 grooves that may stick out about 1mm. So what's going on? Help would be appreciated thanks

mmmkay

How badly would that effect cars with 4 or 6 piston Callipers? I'm planning on buying a Challenger with the 6 piston Brembo fronts.

There is a "rust belt" that causes brakes to rust? 😂

This might be due to that stuck pad not returning to a relaxed position, it's gotten so hot that it practically welded itself to the rotor, it was likely glowing red to the point the metal is soft, and this created the deformed surface on the inner part of the rotor. Then when it cooled off and was driven those groves eventually cut into the brake pads, creating that wear pattern. Ultimately the problem is mechanics that call a brake job "i'm doing a pad slap", they don't make sure everything is clean on the important surfaces, moving right, lubed right, instead they just take out the old pads and put new ones in.

a lot of problem but no solution demonstrated.

No airflow

K,k,ok, right, k. Ok?

Your sound is terrible.