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Old 04-26-2017, 04:44 PM   #1
mred2nice
 
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Help with Black Residue on Car after Driving

Hello There Everyone

I have an 2013 auto yellow with @41K on it. After a bit of driving I am getting a black powdery residue all over the rear bumper, spoiler, wheels and qtr panel behind the tires.

It still has the stock style pads on it.

At first I thought it was coming from the exhaust but with it being on the wheels and qtr panels I am thing the brakes but then how does it get all over the rear of the car.

I have the silver wheels.

What do you guys think?

Thanks,
Ed
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Old 04-26-2017, 05:02 PM   #2
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Road dirt/grime is my guess.

Stock pads are pretty dusty, but would not typically get on the bumper and spoiler. Tire shine (if you use any) would fling off behind the wheels, but probably also not spoiler and bumper.
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Old 04-26-2017, 05:13 PM   #3
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Brake dust for sure. Gets everywhere.
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Old 04-26-2017, 05:14 PM   #4
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With the way our cars sit, the rear wheels always kick up stuff on the rear quarter panels, road dirt, dust, and brake dust all the time. You can always get some rockguards, I have the ZL1Addon ones and they work great.
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Old 04-26-2017, 06:30 PM   #5
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Brake dust mostly, the stock pads seem to produce it in large quantities.
50 miles worth of driving and the rear of car would be covered with it.

Just changed my car to Hawk Performance HPS 5.0 pads.

Can't really tell any increase in brake performance the way I drive, but the amount of dust has been reduced by about 2/3....Probably about the best one could hope for considering the size of these brakes !!

Jeff
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Old 04-26-2017, 06:58 PM   #6
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Careful with wheel acid if you are thinking about using it to clean them. My zl1 produces massive amounts of brake dust that needs hand cleaning every wash. (2-3times a week) Like zl1 maniac said, it takes no mileage really to notice it.
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Old 04-26-2017, 07:17 PM   #7
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http://www.hotrod.com/articles/does-...ellent-tested/
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Old 04-26-2017, 09:15 PM   #8
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Thanks for all of the responses. I was out running errands from 10am - 3pm so that sounds like enough time to create the dust. It was "mostly" normal driving.

Where do you buy those rock guards for the back?

That ArmorAll spray sounds like it is worth a try. We put a spray behind the rear tire on the racecar so it is easier to get the rubber off. May just have to try that with the ArmorAll spray.

Are those Hawk pads ceramic? Is ceramic what I need to look for or is there another composition?

Thanks for the help,
Ed
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Old 04-27-2017, 01:28 AM   #9
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Quote:
Originally Posted by cowmaro View Post
Careful with wheel acid if you are thinking about using it to clean them. My zl1 produces massive amounts of brake dust that needs hand cleaning every wash. (2-3times a week) Like zl1 maniac said, it takes no mileage really to notice it.
It takes me longer to clean the wheels than wash the car...Quick detail spray does really good for a quick clean up...
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Old 04-27-2017, 08:38 AM   #10
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I washed my car three days ago, and this morning the back of the car was already filthy. It's a combination of brake dust, exhaust, road grime, etc. Because of the aerodynamics of the car and the many potential sources of contamination, I don't think that there is a real fix; apply the wax or paint protectant of your choice, carefully wash as needed, and enjoy the car.
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Old 04-27-2017, 09:33 AM   #11
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OP here you go:

https://zl1addons.com/collections/rockguards
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Old 04-27-2017, 09:37 AM   #12
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[QUOTE=mred2nice;9694877]Hello There Everyone

I have an 2013 auto yellow with @41K on it. After a bit of driving I am getting a black powdery residue all over the rear bumper, spoiler, wheels and qtr panel behind the tires.

It still has the stock style pads on it.

At first I thought it was coming from the exhaust but with it being on the wheels and qtr panels I am thing the brakes but then how does it get all over the rear of the car.

I have the silver wheels.

What do you guys think?
Are you using Torco additive to your fuel? If so when I used it I would have residue all over the rear of the car including the wheels.
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Old 04-27-2017, 09:40 AM   #13
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Quote:
Originally Posted by mred2nice View Post
Thanks for all of the responses. I was out running errands from 10am - 3pm so that sounds like enough time to create the dust. It was "mostly" normal driving.

Where do you buy those rock guards for the back?

That ArmorAll spray sounds like it is worth a try. We put a spray behind the rear tire on the racecar so it is easier to get the rubber off. May just have to try that with the ArmorAll spray.

Are those Hawk pads ceramic? Is ceramic what I need to look for or is there another composition?

Thanks for the help,
Ed
Switched my pads out to carbon fiber ceramic. The way I drive no difference in brake performance. About 70% less brake dust.
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Old 04-27-2017, 10:41 AM   #14
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Same thing happens to me. Wheels, directly behind the rear wheels on the fenders and the back of the car are destroyed by the time you back up to the mail box. (OK slight exaggeration). I wash the car before and after I take it anywhere if I can. Sure is quite a mess. All of my buddies have C6/C7 Vettes and there cars are much easier to clean and don't get the same black crap on the back. I also have white which makes it easy to see the black dust up close, but it does hide it from a few feet away.
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