Dreaded Warped Rotors

I replaced mine when I got my new 2020 AWD GT 3.3TT. I have geomet cross drilled vented rotors on all 4s.I paid for the parts and KIA split the cost of the rotors.I also hate when car manufactureres do this--honda does it--so does chevy and dodge. It is misleading to have "brembo" brakes and the rotors are nor mal rotors on a 167 mph car that had emmerson fittapaldi and several engineers touting the cars "track" ability/My stinger now stops way much better and will bite in inclement weather the first time.I get no extra brake dust and have gone to the drag and have had to go from 120--130 to about 20 mph several ties and have had zero problems.I also told KIA corprate this was misleading and frankly semi dangerous.
You're right about dangerous. When Car & Driver took the Stinger to Virginia International for their annual test, the Stinger literally lost braking and they put it into the grass. Kia had to provide euro-spec pads, which worked fine. Putting Brembos on a car with brake pads that belong a Prius is criminal.
 
You're right about dangerous. When Car & Driver took the Stinger to Virginia International for their annual test, the Stinger literally lost braking and they put it into the grass. Kia had to provide euro-spec pads, which worked fine. Putting Brembos on a car with brake pads that belong a Prius is criminal.
^ this

@Flaniganskywalker

You are correct! I should have perhaps done my due diligence and more research... I genuinely believed that the whole brake set up was in fact true Brembo since I had friends who had a full Brembo set up on their vehicles. That was my fault. Kia corporate should be more transparent about it. I understand they're not hiding it but it is a bit misleading.
 
Well if it's the pads then it would be every single person. Seat your brakes properly and don't ride them.
Im with you. Its in the driving style. I get the vibration every now and again when I come off the highway and get stuck at a light. I just do a hard slow and let them cool down and its gone.
 
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So is it the rotors or the pads...? If it's pads, what are you guys running instead of oem? Got a brand new stinger iand if there's cheap pads I'll gladly throw some good aftermarket on there. Thanks ,
 
So is it the rotors or the pads...? If it's pads, what are you guys running instead of oem? Got a brand new stinger iand if there's cheap pads I'll gladly throw some good aftermarket on there. Thanks ,
That’s like asking people what oil is good. The pads are Brembo. The path of least resistance, which happens to be the cheapest, is to replace the pads to something else and you’re unlikely to encounter the problem described in this thread.
 
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So is it the rotors or the pads...? If it's pads, what are you guys running instead of oem? Got a brand new stinger iand if there's cheap pads I'll gladly throw some good aftermarket on there. Thanks ,
KIA corporate and the dealer both were honest enough to let me know it was the rotors. I bought new rotors on all 4s shortly after i bought my car and have gone to the drag and have had to make several stops from 120 mph plus down to 20 with no problems.You can even call brembo--they supply the pads and the brake caliper for our cars and not the rotors.BTW like someone said replace them all--the pads prices are nothing compared to the several hundred dollars the rotors will cost--and to put the rotors on they can replace the pads prob for no charge since the rotors are the labor. I asked KIA--who split the cost of my new rotors and the tech that did them at rick case in gwinnett if the pads needed to be replaced and he said no they are brembos--I have had zero problems and am on my one year anniversary and used them several times at well over 100 mph.https://www.youtube.com/watch?v=mPXOx4KnR6A&t=5s--had to brake from 120 down to 20 after this race and a few others.
 
Yeah I agree. If you are doing a lot of track runs, I would change the rotors and pads just to be safe.
 
So is it the rotors or the pads...? If it's pads, what are you guys running instead of oem? Got a brand new stinger iand if there's cheap pads I'll gladly throw some good aftermarket on there. Thanks ,
Kia replaced my N. American pads and rotors with European pads and rotors. This was after they previously replaced my OEM pads and rotors with another set of N. American pads and rotors and the issue returned about a month later. The problem went away after switching from N. American parts to European parts and hopefully the problem stays away. Full disclosure... I don't race or go crazy with my car... the problem was occurring even at 25mph lol. Dealership had my back without hesitation and told me this was a common problem. Their words not mine.
 
Well at least Kia is covering it, I'll prob swap pads to hopefully save myself the trouble. So the consensus is that the rotors are brembo but they threw cheap pads on eh?
 
Yes cheap pads.
 
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Watcha guys using for performance pads these days? Only time I've swapped em out myself I used EBC.. is the swap pretty straight forward
 
Well at least Kia is covering it, I'll prob swap pads to hopefully save myself the trouble. So the consensus is that the rotors are brembo but they threw cheap pads on eh?
Above your post, @Flaniganskywalker says the opposite. and I've heard the opposite before. So, confusion continues to reign. :rolleyes:
 
The swap is super easy. In and out!
 
Well at least Kia is covering it, I'll prob swap pads to hopefully save myself the trouble. So the consensus is that the rotors are brembo but they threw cheap pads on eh?
I do not believe the problem is “common.” However, replacing them will give you some peace of mind.
 
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No. The rotors are not Brembo.
The pads and calipers are Brembo.
KIA put Brembo pads on non-Brembo rotors. There’s nothing inherently wrong with non-Brembo rotors, but the particular pad they used in the States, doesn’t play well with them for some people.
I do not believe the problem is “common.” However, replacing them will give you some peace of mind.
Right--the pa.ds and calipers are brembos--rotors are not--that is why they are warping cause they are inferior metal and can not dissapate heat--pads either work or wear out quicklyI linked my drag videos in which in one evening I made several stops from 120-130 down to 20 with ZERO problem after putting cross drilled and vented geomet rotors on it.
 
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The confusion! Anyone verified what is brembo and what isn't? This problem more related to people running these stingers on the strip?
 
I’m going to say it, the rotors aren’t warping. They’re building deposits, that’s not the same as warping but does lead to the same vibration issue.

Also, to clear the record, Brembo does make rotors for the GT/GT1/GT2 (09.D027.11 and 09.D028.11).

Brembo also cross lists the KIA part numbers on their website (51712J5500 and 58411J5500). This leads me to believe that the factory rotors are in fact supplied by Brembo.

I tend to believe that the pads used here in the States are the cause of the vibration and pad deposits because of the federally mandated copper reduction in brake pads.

I can’t speak to track usage since I don’t track my car. However, I personally experienced vibration during hard braking events. The brakes functioned as intended but the vibration does make you think there’s something wrong because we have become accustomed to smooth braking. Replacing the pads solved the issue for me. I did not touch the rotors.

Track usage will exacerbate the issue. YMMV.
 
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Wouldn't you feel a constant vibration is the rotors are warped no matter what the speed is when breaking? I would think that if the vibration is only happening during hard breaks, then it would be something with the pad deposits.
 
Wouldn't you feel a constant vibration is the rotors are warped no matter what the speed is when breaking? I would think that if the vibration is only happening during hard breaks, then it would be something with the pad deposits.
My problem was that the vibrations and shakes were at all speeds but got worse and crazier at higher speeds... when the dealership drove my car we saw the vibration and shuddering start at 20mph but became very scary even at 50mph... the problem was consistent though... whether it was after hard driving or soft driving or just cruising...
 
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