Team Player

Will this always happen or is this because the pads are new?

Kracka

Rust build-up from the iron. It's not hurting anything and will quickly be swept away when driven again.

Z06 1of38

Because, oxidization and physics.

Quick trip around the block after washing before putting into garage.

Bill Dearborn

It happens on all cars with iron rotors and metallic pads. Surely you must have had cars with wheels that exposed the brake system to moisture and experienced this before.

Bill

Team Player

My base C7 Stingray never did this once.

C8Jake

^ it's a Z51 thing

Team Player

2K14C7

I believe the base rotors are aluminum alloy and won't rust.

C8Jake

are ya positive?

mikez06

Something else for you to complain about, ey "Team Player" *cough*?





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kp

non-z51 has some kind of treated iron rotors that do not rust.

I have had quite a few cars with metallic pads that would stick after a wash if you didnt move it, same if you drove it in the rain then parked it for a few days.

Team Player

Not complaining I just find it odd. I never had a car do this before and I have owned many many cars.

mikez06

Yes, we know ad nauseum: Many, many Corvettes as well.
Any new complaints about the .... A8 ?



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OH SNAP! """Compass""" just did that, Mr. Team Player/Compass and whatever other name you're using Black & White!

vettetwo

GM developed a process called FNC which keeps rotors from rusting:

Quotted from Wardsauto back in 2011:
"General Motors develops a new heat-treatment process for its brake-system rotors that the auto maker expects will save customers’ money, reduce warranty costs and keep expensive wheels looking good. Called Ferretic Nitro-Carburizing, the patented process cooks rotors at 1,040° F (560° C) for a day, bonding nitrogen atoms to the steel rotors to strengthen and harden them."

My 2014 Stingray does not squeal after washing like my 2009 with cross-drilled rotors did.

owc6

For what it's worth, every car I have ever owned has had this issue after a wash or the rain.

This is more noticeable (larger brakes/rotors) than, say, my Saturn or my Honda, but they all did it to a certain extent.

Can't speak to the non Z51 brakes and if they are coated or not ferrous.

WelderGuy

FWIW, I haven't had this problem with any vehicle I've owned.

JerryU

Don"t understand putting brakes away wet! Rotors get very hot with a few stops. If you let them rust, although only a flash rust on the surface, when you do drive it leaves light brown specks on the wheels!

As you note, a drive around the block or just some stop and goes will do the job. I use a micro towel when I get back and pick up any water drops from the mirrors or spoiler etc.

Even when it's raining the rotors are usually hot from stopping. Takes a lot of energy to stop that is converted to heat and rotors take time to cool. Can easily check, just touch a front rotor when you stop, even when it's raining!



Rotors can get over 1000 F in normal driving. You can touch a rotor after you stop and check it out! But be careful

JHundertmark

You can touch them if you like to check the temperature, however, I prefer to use infrared pyrometer. Faster, safer, & more accurate on temperature reading.

JerryU

Hmm, not sure looking at that pic, think I'll keep my optical pyrometer in the draw!

Jimmer1

Good call in the long run!!!