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Comment by olex | Hacker News Reader

Some EVs (Teslas are ones I know of) have software that occasionally lightly applies the brakes to keep them clean.

Also, on EVs with LFP batteries the brakes do get used a bit more, because a full and/or cold pack usually can only take very limited power from regenerative braking. Depending on the implementation in the vehicle, brakes are either applied automatically to still allow for one-pedal-driving (aka. "brake blending", making the difference unnoticeable to the driver), or throttle-pedal regen is simply capped and the driver has to use the brake pedal when they notice that regen power is not sufficient.

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Have Tesla with badly corroded rear brake discs. Software does clearly not help here. It was very bad at the end of winter. Now it’s getting better in spring. I am curious how does it look in autumn. Trying to use mechanical brakes occasionally. I had same story with corroded rear brakes on BMW. The solution was mechanical handbrake.

Which one do you have? I had the same issues with my '19 M3P, all the brakes were badly corroded a year into the lease. Apparently the software to keep this under control came a bit later into the lifecycle, and is not very effective if the problem is already apparent. Anecdotally, what was _very_ effective at cleaning up the brakes was blasting it for a couple laps around the Nürburgring Nordschleife - the grooves / corrosion went away almost completely :D

Now I have a RWD Model 3 with an LFP pack (SR+/"base model"), and have to use the brakes much more than with the old car (that had an NMC pack and almost never limited regen). Over two years in, brakes seem good as new, hopefully they stay this way.

Model Y AWD which saw its first winter recently. So the software should be the recent one. Left side is much worse than right side. Quality problem? Maybe swapping discs before winter could save them. Or replace them before TÜV check, the parts aren’t that expensive.

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