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Brake Rotors - what causes this? #4728366
04/15/18 11:14 PM
04/15/18 11:14 PM
Joined: Feb 2013
Posts: 1,437
NY
99Saturn Offline OP
99Saturn  Offline OP

Joined: Feb 2013
Posts: 1,437
NY
Finally got around to taking off my snow tires and took a look at my rotors and saw the below.




What causes this? Rotors are about 2 years old, 6,000 miles.

Re: Brake Rotors - what causes this? [Re: 99Saturn] #4728367
04/15/18 11:16 PM
04/15/18 11:16 PM
Joined: Jun 2012
Posts: 1,822
USA
oldhp Offline
oldhp  Offline

Joined: Jun 2012
Posts: 1,822
USA
Almost looks like the pads aren't seated in the caliper squarely.


2018 RAM 1500 3.6/8 speed.
2017 Jeep Sahara Unlimited 3.6
"U kan't fixe it......if'n it ain't broke."
Re: Brake Rotors - what causes this? [Re: 99Saturn] #4728370
04/15/18 11:30 PM
04/15/18 11:30 PM
Joined: Jul 2009
Posts: 432
Seattle
Superflop Offline
Superflop  Offline

Joined: Jul 2009
Posts: 432
Seattle
Road deicer


2002 saab 9-5 2.3t wagon
2014 dodge grand caravan
Re: Brake Rotors - what causes this? [Re: Superflop] #4728375
04/15/18 11:46 PM
04/15/18 11:46 PM
Joined: Nov 2017
Posts: 504
North of you Idaho
KneeGrinder Offline
KneeGrinder  Offline

Joined: Nov 2017
Posts: 504
North of you Idaho
Originally Posted By: Superflop
Road deicer


Ding Ding, we have a winner!

I'm only getting 3 or 4 years out of a set of rotors, and I remove my pads a reapply brake pad lube or my pads will seize in a couple years.


08 Tribeca 86k PUP 5w30 wix
06 Accord Hybrid 134k PPHM 0w20 wix
02 Chevy k3500 99k Delvac 1 esp 5w40 wix
00 F350 136k Delvac 1300 15w40 wix
Re: Brake Rotors - what causes this? [Re: 99Saturn] #4728386
04/16/18 12:35 AM
04/16/18 12:35 AM
Joined: Jan 2017
Posts: 2,516
VW Fanboy Island
maxdustington Offline
maxdustington  Offline

Joined: Jan 2017
Posts: 2,516
VW Fanboy Island
My rears look similar but the corrosion is in the center. I had malfunctioning calipers for a while. It is deeper than it appears.

Salt + poor quality metallurgy


03 Jetta AWP/09A 205k kms
Edge 0W40 + Mann 719/30
Re: Brake Rotors - what causes this? [Re: 99Saturn] #4728392
04/16/18 01:04 AM
04/16/18 01:04 AM
Joined: Nov 2015
Posts: 81
Portland, OR
pdxglocker9mm Offline
pdxglocker9mm  Offline

Joined: Nov 2015
Posts: 81
Portland, OR
Salt/road deicer
They will not be able to be turned clean.
New rotors is what will fix it.
Try ebay
I got a few sets of pads and rotors off ebay a few years back
Callahan auto parts yup just like Tommy boy.
05 Pontiac vibe was like 60 for pads and a pair of rotors shipped.
08 gmc sierra was like 95 for pads and rotors.
They are fine only problem is the vibe is a little squeeky some times. But so were the wagner thermoquiets they replaced Looking back on it i should have just snagged the rotors for 42 and got the ac delco pads for 25
It did take 18 months and about 15000 miles for the brakes to squeek.
So if this is adventure you will be doing every 2 years or 6000 miles
The callahan rotors and pads would be a excellent choice.
Even though they are cheap they are of a decent quality.
The rotors are heavy and well constructed.
The pads were ceramic for both applications.
I have never felt that they were inferior in any way they stop very well.

Re: Brake Rotors - what causes this? [Re: 99Saturn] #4728404
04/16/18 02:02 AM
04/16/18 02:02 AM
Joined: Oct 2011
Posts: 3,031
Chicago, IL
Brybo86 Offline
Brybo86  Offline

Joined: Oct 2011
Posts: 3,031
Chicago, IL
Stuck slide pin , or incorrectly installed pads.


08 Honda Accord EX-L 2.4L M1 EP 0w20 153k
01 Kymco People 50
95 Lexus LS400 M1 AFE 0w30 199k
95 Yamaha Jog
Re: Brake Rotors - what causes this? [Re: 99Saturn] #4728431
04/16/18 04:22 AM
04/16/18 04:22 AM
Joined: Aug 2004
Posts: 20,504
CA
The Critic Offline
The Critic  Offline

Joined: Aug 2004
Posts: 20,504
CA
Low quality rotors, metallurgy issue. But this is largely due to the road salt in your area. Try some rotors that come coated; it may delay the issue a bit.


2011 Toyota Prius 1.8L - 185K - SuperTech Dexos Full Syn 0W-20
2007 Honda Accord 2.4 - 135K - Mobil 1 EP HM 5W-30
Re: Brake Rotors - what causes this? [Re: 99Saturn] #4728455
04/16/18 05:49 AM
04/16/18 05:49 AM
Joined: Apr 2015
Posts: 431
Upper midwest
Mainia Offline
Mainia  Offline

Joined: Apr 2015
Posts: 431
Upper midwest
Originally Posted By: 99Saturn
Finally got around to taking off my snow tires and took a look at my rotors and saw the below.




What causes this? Rotors are about 2 years old, 6,000 miles.



If you think that looks bad wait till you see the inside side of that rotor.

I live in the Minneapolis area and they salt the [censored] out of our roads, I also saw a lot of this when I owned a hobby Audi repair shop. First off 6,000 miles in 2 year also explains some of it. Looks like your car does a lot of sitting, that in turn means a lot of time to start oxidation. Just saying, you have I would bet 50 to 60% less braking power because of reduced "swept area", you are a danger on the road. When it rains, I always take the car out for a 4 minute ride of heavy braking to clear the rust of from the rain if I know the car will not be use within 1 1/2 days. IE weekends since my car is use as a work car and we use my wife's car more on weekend.

When My Honda was recalled with the airbag recall I was given a loaner car from Honda and was able to park my carin my garage for 3 months will waiting for new airbags. I signed a paper that I was not going to drive it and if I did they were not liable. I did drive my car around the block every 2 weeks to clear the fine rust that was starting.

Ways to reduce this when you get your new brakes:

1) Don't let rust even start after a rain, drive the car with some heavy braking.

2) Become a heavy braker, use them or lose them.

3) Buy coated brake rotors so rust that can start on the outer edge has a harder time migrating inward.

IE EBC brakes or others of the same.(can be electro plated too) http://www.autoanything.com/brakes/ebc-brake-kits

4) Don't let rust even start after a rain, drive the car with some heavy braking.

Re: Brake Rotors - what causes this? [Re: 99Saturn] #4728463
04/16/18 06:16 AM
04/16/18 06:16 AM
Joined: Sep 2016
Posts: 181
MN
Tman220 Offline
Tman220  Offline

Joined: Sep 2016
Posts: 181
MN
lack of driving in the rust belt is what causes that. The only real way to prevent this is to drive the car more to keep the rust from getting too deep and abrasive.

once it starts, it cant be reversed without machining the rotors or replacing


2012 Regal GS Turbo PP 5w30
1994 Camaro Z28 LT1 355 CI, 430 RWHP PP 5W30
Re: Brake Rotors - what causes this? [Re: 99Saturn] #4728531
04/16/18 08:20 AM
04/16/18 08:20 AM
Joined: Apr 2016
Posts: 1,202
Campbellsville, KY
Alex_V Offline
Alex_V  Offline

Joined: Apr 2016
Posts: 1,202
Campbellsville, KY
Rust, plain and simple. I see this a lot in central KY from vehicles that appear to have come from further North.


To quote a friend, "Synthetics, man."

'85 GMC C3500, 454, 132K
'82 Mercedes 300CD, OM617 turbo, 173K (totaled 2018, in rehab)
'85 Mercedes 300TD, OM617 turbo, 217K (wife's)
'67 Suburban, 350, 331K
Re: Brake Rotors - what causes this? [Re: 99Saturn] #4728548
04/16/18 08:34 AM
04/16/18 08:34 AM
Joined: Jul 2013
Posts: 2,419
OBX & Central FL
NormanBuntz Offline
NormanBuntz  Offline

Joined: Jul 2013
Posts: 2,419
OBX & Central FL
That's a lot of rust for 6,000 miles. If you want ACDelco brake parts for your Saturn, there's a good selection and good prices at www.oscaroparts.com. I'm using the ACDelco Professional Durastop rotors on my Ridgeline, and I like them.


2017 Honda Odyssey SE, 18K
2013 Honda Accord LX, 59K
2007 Honda Ridgeline RTS, 89K
2007 Infiniti M35, 107K
Re: Brake Rotors - what causes this? [Re: 99Saturn] #4728654
04/16/18 10:23 AM
04/16/18 10:23 AM
Joined: Sep 2002
Posts: 4,341
Lakeville, MN
MNgopher Offline
MNgopher  Offline

Joined: Sep 2002
Posts: 4,341
Lakeville, MN
Lack of use plus rust nets what you are seeing. If you drove it more regularly it would help with keeping the swept surface clean and not corroded. Higher end rotors may help, emphasis on the may...

Re: Brake Rotors - what causes this? [Re: 99Saturn] #4728669
04/16/18 10:37 AM
04/16/18 10:37 AM
Joined: Dec 2006
Posts: 8,366
Canuck living in California
KrisZ Online content
KrisZ  Online Content

Joined: Dec 2006
Posts: 8,366
Canuck living in California
With so little driving there is really nothing you can do. The coated rotors will only keep the rust away from the areas not connected by the pads.
Maybe be more aggressive with the brakes when it's dry out? That should at least force full contact.


2015 Grand Caravan 3.6L - 31k miles.
2006 Mazda 3 2.0L - 171k miles
Re: Brake Rotors - what causes this? [Re: 99Saturn] #4728733
04/16/18 11:19 AM
04/16/18 11:19 AM
Joined: Mar 2008
Posts: 7,892
USA
slacktide_bitog Online content
slacktide_bitog  Online Content

Joined: Mar 2008
Posts: 7,892
USA
Salt and non-coated rotors crzy

Get new rotors that are coated. Something like Wagner E-shield or Centric Premium.

You may need new calipers, too. Again, use coated calipers like Napa Eclipse or Cardone Ultra.

Are the pads showing a tapered wear pattern?

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