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23 992 GTS steel Brakes disappointing

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Old Jul 28, 2023 | 11:03 AM
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Default 23 992 GTS steel Brakes disappointing

was instructing for a buddies track event . Took some students for some hot laps in my car after maybe 6 laps or so the brakes started pulsating badly like an abs feeling before abs. They still slowed the car down but felt horrible.

I could see heat marks on the rotors when I brought it in . Very disappointing while I have a Cup car I race and this car was only intended to be a daily I was hoping with turbo brakes it would be ok on track.

Anyone else have issues like this? was there a pad or rotor fix

Wishing now I went with ceramics just couldnt justify the cost
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Old Jul 28, 2023 | 11:48 AM
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Just last night I was watching a review of the GTS on Harry's Garage and he made mention of the brakes being subpar and the rotors grooving after spirited drives.
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Old Jul 28, 2023 | 12:08 PM
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I suspect your skill level is above the capacity of the stock pads and fluid.
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Old Jul 28, 2023 | 12:11 PM
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Originally Posted by Jeahbladejeah
I suspect your skill level is above the capacity of the stock pads and fluid.
Yes - As soon as I heard "my cup car".....
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Old Jul 28, 2023 | 12:26 PM
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Originally Posted by Wilder
Just last night I was watching a review of the GTS on Harry's Garage and he made mention of the brakes being subpar and the rotors grooving after spirited drives.
I have a 22 GTS and spirit drive hard some times and think the brakes are great. I actually feel they get better the more heat I put in to them but that not on a track.

For the track...-can not comment
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Old Jul 28, 2023 | 12:31 PM
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If Porsche recommends steel rotors for track days, jumping on the ceramics bandwagon is not the answer. Must be something specific to your car or the GTS.
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Old Jul 28, 2023 | 12:31 PM
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Originally Posted by Wilder
Just last night I was watching a review of the GTS on Harry's Garage and he made mention of the brakes being subpar and the rotors grooving after spirited drives.
Originally Posted by Jimmy-D
I have a 22 GTS and spirit drive hard some times and think the brakes are great. I actually feel they get better the more heat I put in to them but that not on a track.

For the track...-can not comment
I watched a few videos last night so my recollection wasn't perfect. Here's what he actually said:

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Old Jul 28, 2023 | 12:42 PM
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One word: pads. Stock pads are street pads - I went through a set in a day at a DE event, and the rears wear quicker than fronts due to intervention of PSM. Get a proper set of track Pagids/EBS/etc and problem solved.

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Old Jul 28, 2023 | 12:49 PM
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Yes, I’ve read from some others that actually track that one they swapped out the pads, the issue went away.
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Old Jul 28, 2023 | 02:55 PM
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You probably glazed the rotors with the street pads as @jlegelis said. Deglaze the rotors and put in some high temp. pads and, I think, you'll find the brakes are excellent.
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Old Jul 28, 2023 | 03:55 PM
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Yep, need better pads. Stock pads that aren't properly heat cycled could be very problematic. You invariably got some uneven pad deposit transfer to the rotors which gave you the vibration/pulsing feel.

Reminds of the one "easy" session I was going to do with my old '12 Cadillac CTS-V with stock everything. I can push pretty hard on track and I boiled the stock fluid and completely trashed the stock pads/rotors in 2/3ths of a session sliding off the track when the brake pedal went to the floor and I couldn't build pressure. Luckily, just slid sideways through the grass and stopped about 6 feet from a tire wall. Brakes vibrated incredibly bad all the way home after I got the brake fluid flushed at the track.

I dropped it at the dealer the next day and said the brakes were vibrating and making a weird noise. They put new pads and rotors on under warranty. I was happy.
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Old Jul 28, 2023 | 04:48 PM
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Agree, must be the pads, they make all the difference.
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Old Jul 28, 2023 | 07:41 PM
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Originally Posted by Quikag
I dropped it at the dealer the next day and said the brakes were vibrating and making a weird noise. They put new pads and rotors on under warranty. I was happy.
This sounds way easier than swapping pads.
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Old Jul 28, 2023 | 09:55 PM
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Originally Posted by HappinessProcured
This sounds way easier than swapping pads.
There’s no ‘do it all compound’. Street pads on the track won’t last a day in a well-driven car. Track pads on the street will be noisy and lack cold bite. And PCCB: they sound great a on paper, but no track junkie runs ‘em: everyone swaps to steel rotors lest they shell out $25k for replacement rotors. As with most things in life, everything is a compromise.
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Old Jul 29, 2023 | 05:19 AM
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Been to school at Barber 4 times. They use stock steel brakes there, change pads every other day, rotors once a week.
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