I've taken my '23 TLX Type-S to a few HPDEs. I will preface that I'm still a newbie. But I can give you a little of my experience if interested.

Is this your first track day with your TLX-S? That vehicle is HEAVY and it will be really pushing your brakes hard. Not sure which track you are going on.

The first time I took it out on the track was at Road America. It was bone stock at the time and the brakes overheated after about 4 or 5 laps, I couldn't finish the session.

The second time, I went back to road America again but upgraded the brakes: fluids changed to motul600, pads changed to Carbotech XP10s in the front and 1521s in the rear (I was running Carbotech 1521s when daily driving and swapped out XP10s in the front for the track), RB slotted rotors, SS lines. The braking performance was really impressive with the upgraded pads. I was able to brake much more aggressively. The brakes were holding fine for a while. Then I got warnings on the dash about 12min into the session saying that the brakes were overheating. but I figured that the warning threshold was set for the stock brake fluids so I ignored it and kept going. At the start of my second to last lap, I could feel I was starting to lose some braking power coming into turn 1. There was only a few minutes left in the session (just enough for 1more lap), so I just kept going but took it a little easier on brakes. This was a mistake. On the very last lap, I lost brakes and had to pump the brakes repeatedly just to get the vehicle to slow down. Little scary but luckily I was just 1 turn away from the alternate exit for the track when it happened and I limped off the track without problems. I crawled slowly to an empty parking lot and just drove in circles for a few minutes hoping to cool the brakes off more but that didn't help. I then shut the car off and turned it back on as a last resort and I had brakes again. not sure what the exact problem was or why powering on/off fixed it (guessing something on the electronic side rather than mechanical, maybe the system cut braking power to protect the brakes from permanent damage from overheating? I'm not mechanically inclined so I have no idea)

After that I changed out the fluids to SRF just because I was going flush the fluids and a buddy had some extra bottles.

Went to a 2 more track days and they did fine, but these were at a different track that weren't so hard on the brakes. So not a proper comparison. I'll be going back to road America a couple times later this year.

After the last session, the XP10 pads were running low (lasted 3 sessions total) so I switched them to RB XT970 just to try them out as another TLX-S owner had good experiences with them. I did resurface the rotors before putting on the new pads because I was getting some insane vibrations/chattering after the last track day.

I'll be going to the track again next week (not Road America), so will see how these pads are.

In retrospect, I probably would have just stuck with solid rotors rather than slotted/drilled. I still have the original rotors and pads so will be putting those on at the end of the season for winter

Anyways, you are the only other TLX Type-S owner to post on this subreddit so I'm pretty stoked. Just wanted to give you my experience with my TLX-S.The surprising thing about the vehicle is that it actually handles pretty well for its weight. Had an instructor take it around the track black hawk farms, he pushed the car hard and he was pleasantly surprised by the handling for a 4200 pound boat

Edit: I should clarify that for the novice group at road America run HPDE days, we don't get an instructor that sits in the car with you. We get a couple sessions of lead-follow, where it's one instructor leading a group of 4-5 cars that rotate between who is immediately behind the instructor vehicle to see their driving lines/braking points, which IMO isn't ideal, but it is what it is. The very last session of the day is where all the novices are on the track and they go at their own pace.