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Picked up my Taycan 4S Sport Turismo 2 days ago and noticed today that the passenger side discs look normal with a few specks of brake dust but the driver side has turned completely yellow on both front and rear discs?! Surely this isn’t normal after driving it twice?! Photos attached. Anyone any ideas what this could be etc? Thanks Passenger Passenger Driver Driver
Last edited by Kopland10; 03-10-2023 at 03:26 PM.
Reason: Meant brake discs not wheels
You meant to write `brake disks' instead of `wheels'?
Standard disks are made of iron, this rusts and is normal.
Looks like water was splashed onto the driver side ones.
Sorry yes. I’ll correct
is that normal after 2 days use of a new car though? And on one side specifically? Given they look completely yellow on driver side?
obviously not no. But I’ve never seen one side turn completely yellow before like that. Excessive brake dust can be down to a faulty calliper so I thought that could be an issue. Cheers for your help though.
Not nearly enough environmental information to even form a theory in this thread. For example, Where is the car parked (inside or put), on the street or in a driveway, did it rain, etc. etc.
Whilst it could be typical rust from not being used after getting wet, it doesn’t look exactly that way to me, and I wonder if maybe some sort of cleaning solution has been allowed to dry on them. I would take the car out; get it up to speed and really stamp on the brakes as remember, about 80+% of your ‘braking force’ is actually from regeneration so you aren’t getting much heat into the rotors at all. If a couple of high speed stops from say 80 mph down to 5 mph doesn’t clean the discs; (remember not to engage ABS), then show the dealer asap.
Whilst it could be typical rust from not being used after getting wet, it doesn’t look exactly that way to me, and I wonder if maybe some sort of cleaning solution has been allowed to dry on them. I would take the car out; get it up to speed and really stamp on the brakes as remember, about 80+% of your ‘braking force’ is actually from regeneration so you aren’t getting much heat into the rotors at all. If a couple of high speed stops from say 80 mph down to 5 mph doesn’t clean the discs; (remember not to engage ABS), then show the dealer asap.
Good call on the cleaning solution - that’s exactly what it looks like to me. If you zoom in, the pattern looks like a foaming cleaning solution evaporated and dried on the rotors. Definitely try a few aggressive stops (safely) and see if that takes off the oxidation. Good luck.
Also, if you drive Tycan or any electric car in city drawing and 99% of braking is by the regeneration, you should brake hard once per trip or every other trip to engage the pads.
The Ford mustang and Tesla are struggling w corroded disks in Europe. Audi cars will engage pads every so many miles to keep the rotors clean.
Good call on the cleaning solution - that’s exactly what it looks like to me. If you zoom in, the pattern looks like a foaming cleaning solution evaporated and dried on the rotors. Definitely try a few aggressive stops (safely) and see if that takes off the oxidation. Good luck.
The dealer detailers let tire or wheel cleaner dry on the discs and the calipers on my Taycan CT. My guess is this is exactly what happened here. I can’t seem to get it cleaned off so will attempt to get the dealer to sort it.
03-10-2023, 03:02 PM
New Taycan 2 days old - yellow discs one side?!
