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Diagnose My Brakes #5121366 05/31/19 01:24 PM
Joined: Nov 2014
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Throt Offline OP
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This picture was taken today of the drivers side rear. The rotor surface is a bunch of ridges with rust present, it's obvious the pad is not making full contact. This car doesn't even have 10,000 miles on it yet. What the heck is going on? Part of me wants to take it in to the dealer and let them deal with it. The other part doesn't want the headache and wants to take them apart myself and fix it. However, if new rotors or pads are needed, I want Honda to eat that cost, not me. Is this something that would be covered under warranty? The passenger side isn't much better. It brakes great though, minus the ATS I had with Brembo's, this is the best stopping car I've owned. Probably guide pins but already? Just can't believe this is happening already.

IMG_1412.JPG

'18 Honda Accord Touring, 1.5T, 18,750mi, 1/2 M1 AFE 0w20, 1/2 PPPP 5w30 w/ M1 filter.
'19 Elantra, 2.0NA, 6,500mi, FF/Filter, hers (lease)
Re: Diagnose My Brakes [Re: Throt] #5121380 05/31/19 01:38 PM
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Donald Offline
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What about the other 7 braking surfaces? Especially the flip side of this rotor?

I complained about brakes on a Subaru and said they should not need service at 20K miles. They finally covered it. But my issue was the rust belt related. You are in Florida? Unless you park on the beach I would not think salt and rust would be an issue.


2015 Ford F-250 w/Powerstroke
2016 Subaru Crosstrek CVT (wife's)
Re: Diagnose My Brakes [Re: Throt] #5121381 05/31/19 01:38 PM
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Gimpy1 Offline
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All rotors will rust (except CF rotors) especially in your area and is normal. As for the scoring, since the vehicle is under warranty just get the dealer to do the repairs. That way its documented and may save you $$$ down the road. If you start messing with it the dealer and Honda may deny the warranty claim. It could be that something got stuck between the rotor and the pad or something more serious. Besides why pay for something when the repair should be free. Oh and looking at the pic of the rotor there is a lot of rust on surrounding parts something's not jiving here

Last edited by Gimpy1; 05/31/19 01:40 PM.
Re: Diagnose My Brakes [Re: Throt] #5121388 05/31/19 01:41 PM
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atikovi Offline
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Pads and rotors are wear items generally not covered under warranty but some dealers may do a goodwill repair. I assume the pad has worn into the grooves so there's no reduction in stopping power. Unless the pad or rotor is worn below specs, I wouldn't worry about it.

Re: Diagnose My Brakes [Re: Throt] #5121391 05/31/19 01:43 PM
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mk378 Online Content
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Grooves less than 1mm deep are considered normal. Look at any car in a parking lot they all look about like that.

New car warranty unlikely to cover brake pads and rotors.

Re: Diagnose My Brakes [Re: Throt] #5121414 05/31/19 01:57 PM
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The Critic Offline
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Normal. The material on the rear pads is not aggressive enough to clean off the rust.


2011 Toyota Prius 1.8L - 202K - Valvoline Premium Blue Restore 10W-30
2007 Honda Accord 2.4L - 143K - Valvoline Premium Blue Restore 10W-30
Re: Diagnose My Brakes [Re: Throt] #5121424 05/31/19 02:10 PM
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dbias Offline
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Rotors and brake pads are wear items and usually not covered under any warranty. However if one looks so much worse than the other three rotors there may be an issue with that caliper and or slide pins. When asking for a goodwill fix emphasize the difference btwn them.
The rotors on my Audi are smooth as glass at 58k miles so something is definitely going on with the grooving on your rotor.


2011 VW JETTA Castrol Edge 0W-40
2012 FORD TRANSIT CONNECT Castrol Edge 5W-30
2016 HONDA CIVIC COUPE Casrol Edge 5w-30
2017 AUDI A4 Ravenol 5W-40 RUP
Re: Diagnose My Brakes [Re: Throt] #5121429 05/31/19 02:16 PM
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Lou_Boyle Offline
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Grooves in disc brakes are common, but those look more like what I've encountered after about 75000 -100,000 miles worth of driving rather than 10,000. My son's truck has also developed premature grooving despite having been re-worked with the same brand parts I always use. The only factor I know is different in his case is that he had to drive through a muddy access road to get to work all winter long. Does your car sit outside without being driven for several days at a time giving the rotors a chance to rust between uses, or do you drive through gritty areas regularly? FWIW the mirror image of those grooves will be worn into the pads so you still get full friction contact and stopping power is not reduced according to the seat of my pants.


Think carefully about what you are doing, but be decisive. The road of life is paved with flat squirrels who couldn't make a decision.
Re: Diagnose My Brakes [Re: Throt] #5121457 05/31/19 02:41 PM
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FordBroncoVWJeta Offline
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very normal


2017 Volkswagen Jetta 1.4T - 2015 Honda CRV 2.4 - 2012 Volkswagen Jetta 2.0 - 2007 Chevy Trailblazer 4.2 - 2003 Ford Taurus 3.0 Vulcan
Re: Diagnose My Brakes [Re: Throt] #5121467 05/31/19 02:50 PM
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Throt Offline OP
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I have to disagree with the majority opinion that this is all well and good. The fronts are smooth as glass (just like dbias). I have been around 4 wheel disc brake cars my whole life and I've never seen a rear set look like this on a car this new and not in the rust belt. I can understand they do less braking, less clamping force, etc. but this just isn't right for a car with less than 10,000 miles. I don't live on the beach and it was only in winter weather for a couple weeks in January. Guess I'll see what the dealer says, though I'd rather just disassemble and re-lube everything myself.

Last edited by Throt; 05/31/19 02:51 PM.

'18 Honda Accord Touring, 1.5T, 18,750mi, 1/2 M1 AFE 0w20, 1/2 PPPP 5w30 w/ M1 filter.
'19 Elantra, 2.0NA, 6,500mi, FF/Filter, hers (lease)
Re: Diagnose My Brakes [Re: Throt] #5121473 05/31/19 02:55 PM
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slacktide_bitog Offline
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Do you use the parking brake? smile

Re: Diagnose My Brakes [Re: Throt] #5121521 05/31/19 03:50 PM
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JLTD Offline
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Everyone is saying "rotors and pads" are not covered. Rotors generally are, it's the pad (wear item) that is not.

OP, I'd take it in - even if might be normal for your vehicle.


"Let’s not pretend like 0w20 is anything but a CAFE required crutch to eek another 1/2MPG" - BLND1

Hers: 2018 Ford Flex AWD EB, dealer fill

His: 2015 4Runner 60k, SS 5w20/Amsoil

Re: Diagnose My Brakes [Re: Throt] #5121538 05/31/19 04:05 PM
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dbias Offline
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Originally Posted by Throt
I have to disagree with the majority opinion that this is all well and good. The fronts are smooth as glass (just like dbias). I have been around 4 wheel disc brake cars my whole life and I've never seen a rear set look like this on a car this new and not in the rust belt. I can understand they do less braking, less clamping force, etc. but this just isn't right for a car with less than 10,000 miles. I don't live on the beach and it was only in winter weather for a couple weeks in January. Guess I'll see what the dealer says, though I'd rather just disassemble and re-lube everything myself.


Here is a picture of my Audi rotors, it looks like there are grooves but it is totally smooth as you can clearly see the back of the wheel reflected off of it.

20190531_175347.jpg
Last edited by dbias; 05/31/19 04:06 PM.

2011 VW JETTA Castrol Edge 0W-40
2012 FORD TRANSIT CONNECT Castrol Edge 5W-30
2016 HONDA CIVIC COUPE Casrol Edge 5w-30
2017 AUDI A4 Ravenol 5W-40 RUP
Re: Diagnose My Brakes [Re: dbias] #5121583 05/31/19 04:58 PM
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The Critic Offline
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Originally Posted by dbias
Originally Posted by Throt
I have to disagree with the majority opinion that this is all well and good. The fronts are smooth as glass (just like dbias). I have been around 4 wheel disc brake cars my whole life and I've never seen a rear set look like this on a car this new and not in the rust belt. I can understand they do less braking, less clamping force, etc. but this just isn't right for a car with less than 10,000 miles. I don't live on the beach and it was only in winter weather for a couple weeks in January. Guess I'll see what the dealer says, though I'd rather just disassemble and re-lube everything myself.


Here is a picture of my Audi rotors, it looks like there are grooves but it is totally smooth as you can clearly see the back of the wheel reflected off of it.

An Audi is a higher performance vehicle that uses a more aggressive pad compound. A Honda may not.


2011 Toyota Prius 1.8L - 202K - Valvoline Premium Blue Restore 10W-30
2007 Honda Accord 2.4L - 143K - Valvoline Premium Blue Restore 10W-30
Re: Diagnose My Brakes [Re: Throt] #5121588 05/31/19 05:05 PM
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KrisZ Offline
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That looks pretty bad IMO. My rust belt brakes didn't look this bad until towards the end of pad life. This may very well be a "Honda thing", but I would still go to a dealer and see what they have to say. Are the brakes making any squealing noises? Any vibration at freeway speeds? this may help convince the dealer to change them, looks alone may not do it.


2015 Grand Caravan 3.6L - 35k miles.
2006 Mazda 3 2.0L - 186k miles
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