FAQ: Vibration under braking: warped rotors? NO!

[Ulikefishsticks]

I have noticed that issue with the speaker fade also. I'm just worried the fix would introduce new issues because they have to tear apart the entire dash apparently.

On topic though, I had my brakes turned at the dealership a couple of weeks ago from the brake shuddering. I haven't had any issues yet but I was going to install some new pads here soon. How does everyone feel about the stoptech pads that are on K8Stingerstore? I noticed just recently they have both the front and rear pads now.

 

[D.J.]

I have noticed that issue with the speaker fade also. I'm just worried the fix would introduce new issues because they have to tear apart the entire dash apparently.

On topic though, I had my brakes turned at the dealership a couple of weeks ago from the brake shuddering. I haven't had any issues yet but I was going to install some new pads here soon. How does everyone feel about the stoptech pads that are on K8Stingerstore? I noticed just recently they have both the front and rear pads now.

I wonder if the K8Stingerstore stoptech pads are the 308, or the 309 pads.

FYI -

308

309

308 vs 309 stoptech

 

[Helo58]

I have noticed that issue with the speaker fade also. I'm just worried the fix would introduce new issues because they have to tear apart the entire dash apparently.

On topic though, I had my brakes turned at the dealership a couple of weeks ago from the brake shuddering. I haven't had any issues yet but I was going to install some new pads here soon. How does everyone feel about the stoptech pads that are on K8Stingerstore? I noticed just recently they have both the front and rear pads now.

Many have used the Stoptechs without issue, however, I was not one of them. I properly bedded them twice (once again after vibration started). The pads transferred material (in the shape of the pad) to the rotor after a good rain. The Girodisc pads seem to be having success though. I am going to try a set of Hawks and some new stock rotors as my final fix.

 

[D.J.]

Many have used the Stoptechs without issue, however, I was not one of them. I properly bedded them twice (once again after vibration started). The pads transferred material (in the shape of the pad) to the rotor after a good rain. The Girodisc pads seem to be having success though. I am going to try a set of Hawks and some new stock rotors as my final fix.

Which Stoptech pads did you use? the 308 compound or the 309?

I believe one is Semi metallic and the other is ceramic - but definitely they are different than each other

 

[D.J.]

I emailed "SALES@STOPTECH.COM" asking about the difference betweenthe 308 vs 309 compounds.
This was the response

Hello DJ the 308 ceramic or semi met is a street pad & 309 is a sport pad aramid fiber

Hope this helps

Thank you

ROGER LUBECK
Sales Account Manager
APCautotech.com

 

[KNSBrakes]

The Stoptech Touring pad (308 series) is a reboxed Centric Posi-Quiet. They are usually ceramic for Japanese car makes (i.e. Centric 105 series). Some cars (Euro) including many Brembo cars use the Centric 104 series for the 308 series. The Stinger 1001 pad shape is so popular they make both (104 and 105) but I think they would use the 105 for the 308 series.

The 309 Stoptech Sport (previously 'street performance') is a different pad altogether. It is aggressive for a street pad and is dusty. I sold a LOT of them back in the day. We did get a few too many judder cases from those prompting me to add that on my website. Good price though.

 

[Helo58]

Which Stoptech pads did you use? the 308 compound or the 309?

I believe one is Semi metallic and the other is ceramic - but definitely they are different than each other

Based on your contact with Stoptech, it would be the 309 para-aramid. I purchased them here...Stoptech Performance Street Ceramic Brake Pads - Front Kia Stinger - OEM Brembo

 

[Helo58]

The 309 Stoptech Sport (previously 'street performance') is a different pad altogether. It is aggressive for a street pad and is dusty. I sold a LOT of them back in the day. We did get a few too many judder cases from those prompting me to add that on my website. Good price though.

I can confirm that they are indeed dusty and "judder" on my Stinger. I have used the Hawk Street 5.0 pads on a previous car. They were great pads, but as a semi-metallic pad, they were also very dusty and the dust was very corrosive relative to ceramics and aramids. Maybe I would have better luck with the 308 compound...

 

[KNSBrakes]

I can confirm that they are indeed dusty and "judder" on my Stinger. I have used the Hawk Street 5.0 pads on a previous car. They were great pads, but as a semi-metallic pad, they were also very dusty and the dust was very corrosive relative to ceramics and aramids. Maybe I would have better luck with the 308 compound...

My phone rang off the hook with 309's and judder.

The 308 is a regular street pad of good quality. If that is the type of brakes you want than it is perfect.

The Hawk HPS or HPS 5.0 are semi-met - but I would more say they are moderate dusting. For me I think it's not a big deal but others may find it to be a bit much. Certainly less than most Brembo pads. I like them because they are reliable on a performance car. Not super aggressive but they rarely judder or squeal but they will take some hard use before giving up.

 

[Helo58]

My phone rang off the hook with 309's and judder.

The 308 is a regular street pad of good quality. If that is the type of brakes you want than it is perfect.

The Hawk HPS or HPS 5.0 are semi-met - but I would more say they are moderate dusting. For me I think it's not a big deal but others may find it to be a bit much. Certainly less than most Brembo pads. I like them because they are reliable on a performance car. Not super aggressive but they rarely judder or squeal but they will take some hard use before giving up.

I loved everything about the performance of the Hawk pads, but I noticed about a 8-9 months after using them that the clear coat (and some paint) was coming off of my wheels and the caliper finish was down to the bare metal in places the air flow hit the most. If I used the Hawk pads again, I would just have to wash the wheels more frequently.

 

[MerlintheMad]

I loved everything about the performance of the Hawk pads, but I noticed about a 8-9 months after using them that the clear coat (and some paint) was coming off of my wheels and the caliper finish was down to the bare metal in places the air flow hit the most. If I used the Hawk pads again, I would just have to wash the wheels more frequently.

This dust issue is what makes me less than enthused to upgrade my brakes. But, I wash my car weekly, sometimes more often than that. And I always include the wheels and brake calipers.

The number one, open secret about preserving a car is to wash it often: never let filth accumulate in the first place.

 

[Helo58]

This dust issue is what makes me less than enthused to upgrade my brakes. But, I wash my car weekly, sometimes more often than that. And I always include the wheels and brake calipers.

The number one, open secret about preserving a car is to wash it often: never let filth accumulate in the first place.

Compared to the stock ceramic pads, one would be amazed to see the dust from a performance semi-metallic. Indications are that this was Kia's reasoning for choosing the ceramic pad for the US market rather than the Euro pads. I had no idea it could be that bad so fast. Let's just say that it is no coincidence that ceramic pads are a "thing" now. Haha! As you said, keeping them clean and rinsed is the key though!

 

[MerlintheMad]

Compared to the stock ceramic pads, one would be amazed to see the dust from a performance semi-metallic. Indications are that this was Kia's reasoning for choosing the ceramic pad for the US market rather than the Euro pads. I had no idea it could be that bad so fast. Let's just say that it is no coincidence that ceramic pads are a "thing" now. Haha! As you said, keeping them clean and rinsed is the key though!

Seriously. I would clean my front wheels each time I drive, if I saw brake pad dust all over them.

 

[KNSBrakes]

Selling performance brakes for 15+ years I am still surprised at how brake dust irritates some. I don't even notice it unless I am changing the wheels. I use up all my OCD on other dumb stuff

 

[NS_Stinger]

Brake dust is only a concern for people who don't wash their cars often enough.

 

[Helo58]

Brake dust is only a concern for people who don't wash their cars often enough.

As much as I hate to admit it, it is true! When I was younger I used to love washing my car. I'd spend the whole day doing it. When I crossed 50, the idea was less appealing to me. I will say that for me, the wheels look dirty far sooner than the car does with the new pads. The Griots wheel cleaner does a great job though!

 

[KNSBrakes]

Sidebar
What front rotors are you using? Still the OEM's? How much are they?
Checked with Centric on the front rotors - looks like none in stock and none on order yet as tariff concerns linger.

 

[white03]

Only 2000 miles on my Stinger and braking is still very good. After reading all 22 pages, I have a question please. Seems like the consensus is this braking problem is caused by the brake pads and rotors heating up. If I am a relatively conservative driver, very little or no "spirited driving", or driving that causes the brakes to heat up abnormally, will I have this braking problem with my rotors?

 

[itguy61]

Who knows, I had it and do not drive very hard. Some have experienced it and some have not. I will say that early on putting new pads on might be advisable, does not cost much and is easy to do.

 

[stingeradmr]

I wish I had done it sooner. As soon as I changed the pads, the problem has stopped. Now have 60,000 miles and no vibration. And I changed the pads myself so easy