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CT5-V Catalytic Converter and Brake work

CT5-V Model

jrhammer

Member
Joined
Aug 5, 2023
Messages
18
CT5 BW 2023 Manual
The car is great. Wonderful to drive without drawing attention.

At about 20,000 miles, there are two problems:
I had three catalytic converters replaced
Brakes already worn thin — other than dealers, replacement brake pads are challenging

First catalytic converter replaced was defective.
Second and third were the result of the first replacement not being "broken in" correctly — which sounds fishy since a catalytic converter is a passive component.
It cost nothing as by law (according to the Internet), the dealer is responsible for all catalytic converters up to 8 years or 80,000 miles.

Has anyone else had catalytic converter problems?

Brake replacement seems a bit too soon. I have another heavy car, 2000 Jaguar S V8, that needed new brake pads at 74,000 miles. It was very challenging getting CT5 brake pads as it seems Brembo had some sort of development contract with GM that stipulated that only GM sold after market parts. So far, I found six caliper (if that is the right term) replacement at O'Reilly (house brand) for a reasonable price. However, only GM makes the wear sensors so that was pricey but there os only one for front and one fo rear.

The dealer wanted about $1,000 for parts front and rear claiming the original parts last longer than aftermarket. He shut up pretty fast when I told him the miliage. I do not brake hard and the car has never beepn on a track. I found the rear pads at a brake specialty site for less.

When have others replaced brake pads?
 
Brakes: I had a bunch of track days on my 5BW & replaced the brake pads at 25k miles. KNS Brakes has many brake pad options for both front & rear. I recommend talking to them for your needs. (Disclaimer: I have no financial ties to KNS brakes other than giving them my $ for many brake parts over many, many years.)
 
I just received front and back Carbotech 1521 low-dust brake pads. The pads come with the slot for the wear sensors. I have them going on June 4th. I'll let you know how that goes.

So far I've been very impressed with the company. I ordered the pads off the Carbotech website. Got a call from the company the next business day. Paid for the pads via credit card and had them in two days. Cost was $548 which included $20 for shipping.
 
I just received front and back Carbotech 1521 low-dust brake pads. The pads come with the slot for the wear sensors. I have them going on June 4th. I'll let you know how that goes.

So far I've been very impressed with the company. I ordered the pads off the Carbotech website. Got a call from the company the next business day. Paid for the pads via credit card and had them in two days. Cost was $548 which included $20 for shipping.
Carbotech pads are great. They make all kinds of variations too. I used them on an Alcon big brake kit that I put on a B6 S4 I had.
 
I assume the options mentioned above are for the steel rotors. What are the options for CCB? I have not found any brake pads that are specific for the J57 (CCB) rotors other than the GM ones.
 
Their pad selections can very for producing dust and what temp they need to work. I think I had 1400s on my Alcon kit and when they were cold not much bite. Plus a bit of squeal when cold. So I had to warm them up some to get them up to temp.
 

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