Car Setup
Porsche GT4 Setup Guide for Laguna Seca
Sway bar settings, alignment, and tire pressures for extracting maximum pace from the Porsche Cayman GT4.
Introduction
The Porsche GT4 is capable in factory form, but setup choices can still change balance, tire behavior, and driver confidence at Laguna Seca. The stock alignment is too conservative. You will kill the outside shoulders of your tires.
Alignment Targets
Camber:
- Front: -2.5° to -3.0° (Requires shims or adjustable top mounts)
- Rear: -2.0° to -2.2°
Toe:
- Front: 0 to slight toe-out (1mm) for turn-in response.
- Rear: 2mm toe-in per side (critical for high-speed stability in Turn 1 and Turn 9).
Sway Bars
The GT4 has adjustable sway bars (Soft, Medium, Hard). Base Setup:
- Front: Medium or Hard (to reduce roll)
- Rear: Medium or Soft (to aid traction)
If the car understeers (pushes) mid-corner (Turn 3, Turn 4), soften the front bar. If the car oversteers on exit (Turn 11), soften the rear bar.
Wing Angle
Laguna isn’t a high-downforce track, but you need stability over the blind crest (Turn 1). Run the rear wing at maximum angle of attack.
Summary
Don’t buy parts until you max out the stock adjustments. Need a setup sheet? Email me and I’ll send you my baseline numbers.