iRacing LMP3 Ligier JS P320 Guide

The Ligier JS P320 is the entry-level prototype in iRacing. With 460hp from a Nissan V8 and balanced aero, it bridges the gap between GT cars and LMP2. More accessible than the P217, it rewards smooth driving and setup tuning.

Driving Characteristics

• Aero stability – Stable through medium and high-speed corners, planted in slow turns
• Low-speed understeer – Common on corner exit. Setup and technique can address it
• Braking – Consistent and predictable. Often an advantage over rival LMP3s
• Low-speed rotation – Good front-end grip and rotation at low speed

Setup Guidelines

Suspension

• Soften the front anti-roll bar to reduce low-speed understeer on exit
• Soften front springs to reduce understeer; stiffen rear springs for more on-throttle rotation
• Spring changes affect ride height at speed—check aero balance

Brake Bias & Tyres

• Brake bias can be set further rearward than other LMP3s—experiment for feel
• Start tyre pressures at minimum for optimal grip
• Target 85–95°C operating window. Use brake ducts to manage temps

Progression Path

The Ligier suits drivers moving from GT to prototypes. Master it before stepping up to the Dallara P217.

Next: GT3 Guide for ABS/TC cars, or Setup Basics for tuning foundations.