Who else has had warped rotors?

[ScottyDangles]

The brake pads are at fault, is what I am guessing. Why some don't run clean and must instead leave deposits is what baffles. From what I've read on this thread and elsewhere, I'm not believing that the rotors are warped.

I would agree on your comment as well. I have the same break shudder only at high speeds. Ever since I stopped using the auto hold feature and parking break I've noticed the shudder is almost completely gone. My guess is the pads leave deposits on hot rotors, for example if you are applying the break at a stop light after using your breaks to slow down from exiting a hwy at relatively high speeds. Of course I could be completely wrong but that's my guess. You should be able to feel warped rotors at any speed in my opinion. I'm wondering if a pad upgrade would help or getting cross drilled rotors?

 

[stinger1168]

I would agree on your comment as well. I have the same break shudder only at high speeds. Ever since I stopped using the auto hold feature and parking break I've noticed the shudder is almost completely gone. My guess is the pads leave deposits on hot rotors, for example if you are applying the break at a stop light after using your breaks to slow down from exiting a hwy at relatively high speeds. Of course I could be completely wrong but that's my guess. You should be able to feel warped rotors at any speed in my opinion. I'm wondering if a pad upgrade would help or getting cross drilled rotors?

Pad upgrades sound like a great idea. That's what I would do if that's the issue. Funny you mention cross drilled rotors, I remember when KIA was testing the pre-production Stinger, it had slotted rotors. I think the "Brembo setup" is ONLY calipers and NOT rotors and pads.

 

[ScottyDangles]

Pad upgrades sound like a great idea. That's what I would do if that's the issue. Funny you mention cross drilled rotors, I remember when KIA was testing the pre-production Stinger, it had slotted rotors. I think the "Brembo setup" is ONLY calipers and NOT rotors and pads.

Slotted rotors could work too! Crap I might have just talked myself into an unnecessary brake upgrade!! Lol

 

[MerlintheMad]

These brakes as-is are the most awesome brakes I've ever had. They can be better? Well! And who wouldn't want to upgrade the brakes. Someday I will, when it comes time to replace worn stuff.

 

[ScottyDangles]

These brakes as-is are the most awesome brakes I've ever had. They can be better? Well! And who wouldn't want to upgrade the brakes. Someday I will, when it comes time to replace worn stuff.

Once you get the upgrade bug you’re done! That being said I won’t be doing anything to the brakes till the stock parts wear out. Next for me is the JB4/spark plugs... and perhaps sway bars and springs. My wife may kill me...

 

[MerlintheMad]

If your car does not first.

Once you get the upgrade bug you’re done! That being said I won’t be doing anything to the brakes till the stock parts wear out. Next for me is the JB4/spark plugs... and perhaps sway bars and springs. My wife may kill me...

 

[MisterMac]

I felt some vibration indicative of uneven rotors, so I took her into the dealer to get checked out. All four have hot-spots and are being replaced under warranty at 4,800 miles. They attempted to turn the rotors, but that wasn't successful. Any further turning would've taken them below safe specs.

The shop foreman said the pads are actually Kia branded Brembos, but the rotors are not.

I am now searching for drilled or slotted rotors to install instead of the OEM.

 

[MisterMac]

Well, go figure....all rotors are on back order....yippee!

sarcasm drips like blood.......

 

[Hojae84]

It's either the pad material or rotor material is the problem.
I thought it may be due to the auto hold.. highway driving pads are hot then stop and go traffic maybe a little pad material stays or melts on rotor during autohold. but the service tech said auto hold utilizes the rear brake only... I have a feeling he is mistaken I swear I hear and feel brakes on front during auto hold.

 

[Waynerm002]

It’s rear only. The sound may seem like it comes from the front but the system is installed on the rear.

 

[Hojae84]

It’s rear only. The sound may seem like it comes from the front but the system is installed on the rear.

huh weird. i swear i hear something disengaging in the front when i accelerate out of autohold. yeh then no idea hope they figure out what is causing this. happened to me and i just daily drive and do road trips - very undemanding braking typically. maybe its the coating they put on the rotors when new to prevent rust during shipping maybe that doesn't mix well with pad or rotor material. since my rotors were replaced thankfully issue hasn't popped up again.

 

[Kamauxx]

Autohold isn't causing it. I started noticing rotor warp around 10k miles and I have never used autohold.

 

[MisterMac]

The issue with the rotors is known as hot-spotting. It is caused by the rotors not being able to dissapate the heat well enough from braking with the Brembos. If the rotors we have were manufactured with a better material to sustain higher heat and also slotted and or drilled, we would most likely not have these issues.

 

[MerlintheMad]

It's either the pad material or rotor material is the problem.
I thought it may be due to the auto hold.. highway driving pads are hot then stop and go traffic maybe a little pad material stays or melts on rotor during autohold. but the service tech said auto hold utilizes the rear brake only... I have a feeling he is mistaken I swear I hear and feel brakes on front during auto hold.

If you're a lead foot on the brakes, then any holding in place, Auto or otherwise, is going to apply pads to HOT rotors. There is no escape. I am a light braker except in needful situations, which I avoid like death by watching out.

 

[MisterMac]

If you're a lead foot on the brakes, then any holding in place, Auto or otherwise, is going to apply pads to HOT rotors. There is no escape. I am a light braker except in needful situations, which I avoid like death by watching out.

My rotors, in less than 5,000 miles have hot spots. I rarely apply my brakes as I choose to down-shift with my paddles, use my dynamic cruise control, and not tailgate. However, I have done some fairly aggressive 0-xxx runs and hard braking that I believed caused my hot-spotting. I never had this problem on my SRT Charger, which I ran even harder than my Stinger, I think because the Brembo rotors were drilled and slotted.

 

[MerlintheMad]

My rotors, in less than 5,000 miles have hot spots. I rarely apply my brakes as I choose to down-shift with my paddles, use my dynamic cruise control, and not tailgate. However, I have done some fairly aggressive 0-xxx runs and hard braking that I believed caused my hot-spotting. I never had this problem on my SRT Charger, which I ran even harder than my Stinger, I think because the Brembo rotors were drilled and slotted.

Right. You were "tracking" the car. I've not done that. I have stood on the brakes HARD exactly twice in c. 10.5K miles. They worked a charm both times. Apparently that is not enough to heat the rotors enough to create "hot spots". The brakes are working exactly as intended for a gran turismo high performer out on public roads. Even my runs up into the 150s I didn't follow up with heavy braking, so, no issues. There must be some variability in the rotor material used by the Stinger, or else I think we'd hear a lot more about "lumpy" brake issues. Most of the rotors (like most of the paint jobs) are just fine.

 

[Hojae84]

If you're a lead foot on the brakes, then any holding in place, Auto or otherwise, is going to apply pads to HOT rotors. There is no escape. I am a light braker except in needful situations, which I avoid like death by watching out.

I dont brake w a lead foot
Most of time my baby kid is in the back.
This issue happens to some without aggressive driving habits

 

[Kamauxx]

If you're a lead foot on the brakes, then any holding in place, Auto or otherwise, is going to apply pads to HOT rotors. There is no escape. I am a light braker except in needful situations, which I avoid like death by watching out.

Every time someone posts about an issue they have with their car you come into their thread and dismiss their claims because you don't have similar issues.

I don't understand why your desire to do that is so strong. It doesn't help anyone solve their problem. And it's insulting to say all the members of this forum who have posted about brake rotors issues have caused the problem by having a "lead foot".

If you have nothing to add to these types of posts other than "I don't have a problem so you must be the problem" maybe it's best to just move on and not reply.

 

[MerlintheMad]

Every time someone posts about an issue they have with their car you come into their thread and dismiss their claims because you don't have similar issues.

I don't understand why your desire to do that is so strong. It doesn't help anyone solve their problem. And it's insulting to say all the members of this forum who have posted about brake rotors issues have caused the problem by having a "lead foot".

If you have nothing to add to these types of posts other than "I don't have a problem so you must be the problem" maybe it's best to just move on and not reply.

I didn't say any of that. I proposed that rotors are variable, also pads, with the OEM equipment. If someone stands on their brakes and gets hot spots that explains it perhaps. If they don't brake aggressively and wind up with crappy feeling brakes, and I don't, that is information that adds to determining what degree of a problem the Stinger has vis-a-vis brakes. Same with every other issue that some cars have; saying "nya, nya, nya my car doesn't have ANY issues, so suck it up buttercup" isn't very cool. And I am not doing that. Sorry that you feel this way.

 

[MisterMac]

I didn't say any of that. I proposed that rotors are variable, also pads, with the OEM equipment. If someone stands on their brakes and gets hot spots that explains it perhaps. If they don't brake aggressively and wind up with crappy feeling brakes, and I don't, that is information that adds to determining what degree of a problem the Stinger has vis-a-vis brakes. Same with every other issue that some cars have; saying "nya, nya, nya my car doesn't have ANY issues, so suck it up buttercup" isn't very cool. And I am not doing that. Sorry that you feel this way.

It seems you are not aware of how the things you say are perceived by others. I believe your intent is as you've said, however, that is not how your communication is being received. Often your posts are viewed as unproductive, antagonistic, and/or self important.

You can be an excellent asset to this community if you choose to modify your approach, imo