Birkinjay

Hi guys,

I’m curious what these white marks and residues are. They can’t be wiped off. Look like splashes of a white paint

Cjack55

Looks almost like some type of salt stain. Looks as if it is on the rim too. Did you try some WD 40 on a rag to see if it wipes off? I had a jeep Rubicon which I took to an automatic car wash really messed up my after market rims. They must have used some type of acid cleaner for the rims....and of course they deny any responsibility. I only wash my 911 GTS by hand using real mild chemicals for the rims and a lot of elbow grease. Good luck.

cyclingismylife

Have you had you paint polished/corrected? It kinda looks like polish residue from a random orbital buffer.

Birkinjay

yea I did. But if it was polish residue, it should be cleaned easily. But this is sooo difficult. I couldnt get rid of them

Birkinjay

on the rim, they are just dusts 😅 . I haven’t tried WD40. I will try soon and update. Thank you

btw, will it damage the brake ? I saw online that if use WD40 on brake it will cause something harmful

MoeMistry

992 hats extremely sensitive and will discolor over time…not sure what Porsche/Brembo has done on this generation, but we see lots of discoloring and staining …even on brand new cars after a few washes

Birkinjay

hi again, do you know how to get rid of cat urine on the disc here? A street cat peed on the rotor and left with these tiny spots. I couldn’t get rid of them.


also, what is this mark on the edge of the rotor? I can scratch it off with my nail.

jlegelis

Might be my favorite 1%-er post ever... stray cat peed on my CLs, lol

rasetsu

It's best for your sanity to stop worrying about little superficial stains on your iron brake rotors which are a consumable part. Drive your car more so the rotors wear down and replace them.

jlegelis

You sure it was a cat?

blackairforce1

Remove the rotor and get it turned every 1000 miles (or after you wash the car) to remove any imperfections that will impact your braking performance. Use steel wool wheel or sand paper on the rotor hat.

jlegelis

Definitely... 'rotor maintenance' is every 1k miles, who knew?

RennPart

Drive your car, then it will need new rotors.

when it need new rotors- call us to get some Girodisc 2 piece rotors with an anodized hat.

problem solved.



—Aaron

CZS

My wife is thoroughly convinced that I'm the most obsessive person in the world. Going to show her this thread and wait for an apology....

Birkinjay

haha yeppp after I wiped the urine off, I was left with these spots 😮‍💨