I finally managed to hit the track again after a long hiatus, partly due to work and business and partly to avoid the scorching summer heat in the desert.

Since my last visit in February I made some modifications to the stock suspensions to achieve a decent track alignment by adding adjustable rear toe control arms and camber plates.

The track was configured as clockwise: while I hadn't run in this direction in quite a while, I was very excited because with more experience under the belt and a new track alignment I was looking forward to improving my personal best.

I used the first session in the morning to get back up to speed with the track configuration, then in the second session I went on to push harder trying to get a good time before the track temperature would become too high.

I consistently managed to run lap times in the 1:58s - 1:59s range, with a new personal best of 1:58.278s, however the lap-to-lap consistency hasn't been great, making small mistakes in different spots at basically every lap.
While this isn't great, I am clearly leaving good chunks of lap-time on the table, and this gives me confidence that there's still room for improvement.

The new alignment clearly improved grip and tire wear, however the car still suffers from some mid-corner understeer, which I will try to address by setting the rear sway bar to its stiffest setting.

🏎️ What are your impressions? Let me know in the comments below!

Details:

Date
2025/10/07

Track
Chuckwalla Valley Raceway, CW

Details
Session 2, Lap 5
Lap Time 1.58.278

Car
2020 Porsche 718 Cayman GT4

Engine/powertrain
- APR ECU Tuning
- Fabspeed Over Axle Pipes
- BMC Engine Air Filters

Suspensions
Front: OEM
Rear: Tarett engineering camber plates and adjustable toe links

Alignment and setup
Front Camber: -2.7 deg
Front Toe: 0.0 mm
Caster: 10.0 deg
Rear Camber: -2.8 deg
Rear Toe: in 2.0 mm,
OEM ride height
Front Sway-bar in "soft" position
Rear Sway-bar in "mid" position (OEM)

Aero
OEM splitter
OEM Wing
OEM "Track" setup (rear wing in high incidence position, removed under tray airflow diverters ahead of front wheel wells)

Tires
Michelin Pilot Sport Cup 2, 11th heat cycle
- Front: 245/35 R20 ~33 psi (hot)
- Rear: 295/30 R20 ~34 psi (hot)

Brakes
OEM (CCBs)

Weather
21.5 °C (70.7 F), 1011 hPa (29.85 inHg), 37 % humidity