I had my IS F on the track earlier this summer and had a lot of fun. After two sessions, my instructor wanted to pilot during the instructor sessions. Of course, I said yes so rode shotgun while he flogged the heck out of it.

During his laps I kept hearing beeping from the PCS (pre-crash system) due to proximity to other cars that were flying around, and at one point when he was braking super deep behind another car the seatbelts yanked us into the chairs which I found a bit alarming. Can anybody enlighten me on that system on the car? They loosened up right after, so obviously it's a motorized system rather than pyro.

Pix for attention:


Staged for my first lap, sitting on the right side of the car in my black helmet. Instructor has a white helmet

 

Turn off as many "driver aids" as you can when at the track. I found it difficult to put the car where I wanted it with the stability controls engaged, and the PCS crap is annoying and disconcerting as you discovered. I turned it off permanently in the wife's GS F because it nearly caused an accident on the highway. The lawyers don't support close proximity to other vehicles at all.

 

Interesting. On the topic of 'driver aids' though, I've noticed when I turn off traction control it will switch back on after the first pull. This is in 'around town' driving.
I think PCS can be turned off too, no?
But when I was at the track it was 'green' after a heavy rain. First session the track was on damp and cool, second was light rain, and third session was full on raining. The stability control was doing a lot of work keeping me on the track, and I was very impressed by how well it works. Not that intrusive, and I'm sure it saved me from spinning out more than once.

 

I formerly road raced motorcycles, so I have no fear of speed in a car at all. This did not help me on my first track weekend in my IS F. I cooked the front brakes with Carbotech XP-12 pads in the third 20 minute session of the first day. The next day I found I had been flat pedal through a long sweeper that could not tolerate more than 1/2 throttle with the stability controls off. Ever since then, I have disabled the VSC at the track, and now that I have the OS Giken TCD, I'll just do the pedal dance to eliminate as much interference as possible. I'm pretty sure if didn't have prior racing experience, the stability controls could help me, but given where I am, I'm a lot better off with them disabled completely.

 

I'm sure you're right about that. My experience on a track in a car is twice now, first 23 years ago (60 now). Had some soft lapping on my bike a couple of years ago.
The brakes on my IS F are the original Lexus pads (car is JDM and only has 60,000km on it now), and the rotors are in wear spec but are significantly grooved. The well-seasoned instructor was very impressed with the car - his only suggestion was "better brake pads". Pad suggestions welcome, I'll just use Brembo OE rotors for now.
My plan is dropping from 19" to 18" wheels, and a square 265 or 275 section width Nankang rubber.
Dreams for next season as budget is maxxed at the moment.

 

I guess my car doesn't have PCS (in the USA). For pads, lots of good options. I've used Project Mu HC+, Winmax w6, Hawk DTS60, and now Carbotech XP12.
Here's my build thread with some track videos as well (and I'm close to your age, lol).
https://www.clublexus.com/forums/bui...uild-blog.html