The 2021 Porsche 911 GT3 is a track toy car in Forza Horizon 6. Find this car upgrade, tune guide, and tune code down below.
This model is a RWD rear engine car built for circuit racing. It comes in S1 class with 752 PI and leaves us 48 PI to upgrade the car for more stability and extra power for quicker straight speed.
Table of Contents
21’ Porsche 911 GT3 Upgrade List
Tires and Rims
- Tire compound: Slick Race
- Rear Tire Width: 325mm
Drivetrain
- Clutch: Race
- Driveline: Race
- Differential: Race Diff
Platform and Handling
- Anti-roll Bars: Race
- Weight Reduction: Race
Engine
- Intake: Race
- Ignition: Race
- Exhaust: Race
- Flywheel: Race
21’ Porsche 911 GT3 Tune List
Tire Pressure
- Front: 28.5 PSI
- Rear: 28.5 PSI
Lowering the pressure slightly gives the tires a larger contact patch with the road, providing more consistent grip and stopping the car from sliding.
Antiroll Bars
- Front: 12.00 (Soft)
- Rear: 40.00 (Stiff)
A softer front bar and stiffer rear bar helps the heavy rear-engine car turn into corners much more easily instead of pushing straight forward.
Aero
- Downforce Front: 210 LB
- Downforce Rear: 360 LB
This uses the wind to push the car down onto the road. More front downforce helps the car turn, while high rear downforce keeps the back end from sliding out.
Brake
- Braking Force Balance: 48% (Front)
- Braking Force Pressure: 130%
Sending slightly more brake bias to the rear helps the car rotate under braking, and higher pressure lets you stop quicker if you control your trigger finger.
Differential
- Rear Acceleration: 75%
- Rear Deceleration: 20%
High acceleration helps both rear tires push you out of corners together. Low deceleration keeps the rear of the car stable when you lift off the gas.
21’ Porsche 911 GT3 Tune Code
If you like our tune and want our exact build, put this code in: Tune Browser > Search > Share Code > and input our share code.
- Weight: 3,164 lb > 2,825 lb
- Peak Power: 503 hp > 550 hp
- PWR: 0.16 hp/lb > 0.19 hp/lb
- Lateral Gs: 2.0- > 2.1
- Performance Class: S1 752 > S1 800
Overall, we build this 911 GT3 for better curb handling so you can aggressively go through them, catch up with other cars at straight, and better turning ability in most circuits.
End of Guide.
