Question about brakes on Model 3

[dani190]

Hey all,

I have done a ton of searching and found a few threads, but nothing has really answered my question around what I am seeing on my Model 3's brakes.

Can anyone tell me why there is a rim and ridge forming around each of the rotors? Ignore the rust in the center portion of the rotor as I am aware that is just surface rust and comes off after driving. The edge of the rotor (top of the rotor in each photo) is the part that remains and even after a few heavy braking runs refuses to go away... it almost seems like the pads don't contact that area.

Thanks

 

[Mash]

Pas is not touching the edge. I think it's ok.

 

[GtiMart]

I've seen this on other cars too, a small lip that the pads don't touch. Yours seem pretty wide, but I have not looked at mine recently... Are you regularly cleaning and lubricating your brakes?

 

[dani190]

Ah ok. Yes yearly as per Tesla but as I understand it, that only removes rust/lubricates the pins and does nothing for the rotors.

Ok well it sounds like it’s a fairly common problem. The lip I find weird as I haven’t had this on any previous cars. Yes the brakes get used more but to your point, the pads don’t touch this area.

 

[dani190]

So just an update here. I think the issue has gotten worse over the past 6-7 months. Has nobody else seen this on their cars? I understand the brakes don't get used much but I have been making a conscious effort to use my brakes more (flipping to low regen) and this continues to happen and get worse.

 

[Ren.OG]

What mileage are you at now compared to the first photo in 2018?

 

[dani190]

Right now I am at 73,000 km and the first photos were from August 2021 and milage was around 63,000 km.

 

[Ren.OG]

Road salts corroding the outer edge maybe?
6200 miles (10k km) in 4 years also tells me the car may be sitting untouched for long periods of time.

 

[dani190]

It's possible yes but basically every time I do take the car out I am putting the car into low regen and ensuring I use the brakes. My car sits for maximum 3-5 days before it moves due to COVID and WFH. I imagine there are other owners who don't move their car daily and live in salt regions but so far I am unable to find anyone else reporting this sort of issue.

 

[Ren.OG]

yea thats the first i've seen. I think your best bet, besides calling SC, is to roll up to a SC and just ask what could be causing it. At a minimum they'll let you know if they've seen it before.

 

[dani190]

Ya I may just do that. I may be overthinking this but it just doesn't look right.

 

[Occhis]

If it were mine I’d have the rotors resurfaced and have a close look at the pads and maybe replace them if there is a lot of uneven wear.