Mustang GT3
Know everything about iRacing's Mustang GT3 including technical specs, braking tips and more.

Image © iRacing.com Motorsport Simulations
Chassis
Power
Brakes
Bias Range
Adjustable
ABS
DSC Available
Downforce
High
Setup
Advanced
How the Mustang GT3 Handles Braking
The Mustang GT3 features a sophisticated braking system with adjustable master cylinders for both front and rear, offering precise control over brake bias beyond the standard percentage adjustment. The front and rear master cylinder sizes can be changed to alter line pressure to the calipers—larger cylinders reduce pressure and shift bias away from that axle, while smaller cylinders increase pressure and shift bias toward it. Three brake pad compounds are available: Low provides the least friction with maximum modulation, while Medium and High increase effectiveness at the cost of reduced modulation.
Brake bias should be tuned for both driver preference and track conditions, with values above 50% shifting balance forward and increasing front lock-up tendency while potentially improving stability in braking zones. The 12-position DSC system offers adjustable intervention levels, with positions 2-7 recommended for dry conditions and 8-12 for wet. Higher DSC settings reduce lockup duration but can increase braking distances if set too high for available grip.
Braking stability is heavily influenced by aerodynamic platform control during weight transfer. When rear ride height increases beyond optimal targets during braking, you'll experience both a forward balance shift and overall downforce loss—a destabilizing combination. Front camber adjustments affect longitudinal grip under braking, with higher negative camber values increasing cornering force but reducing braking performance and necessitating a rearward brake bias shift to compensate.
Stop Guessing, Start Improving
Many drivers slam the brakes with all their strength, but the fastest modulate pressure, use the brake to rotate the car, and exit as fast as possible. Train that skill here.
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Pro-Designed Exercises
Access exercises created by professional sim racers like Suellio Almeida. Learn the exact braking patterns used by the fastest drivers.
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3 Essential Setup Tips
Tip 1
Brake Bias
Brake bias controls front/rear brake force distribution. Start with 56-58% front for most cars. Engine placement matters: front-engine cars need more front bias (58-62%), mid-engine cars run balanced (54-58%), rear-engine cars need less (50-54%). Understeering under braking? Add 1-2% front bias. Rear feels loose in braking zones? Reduce front bias by 1-2%.
Tip 2
Know Your Car
Check if your car has ABS, traction control, or brake mapping. ABS allows later braking but can increase stopping distance—adjust activation threshold in setup. High-downforce cars brake later and harder at speed but lose grip quickly as downforce bleeds off. Low-downforce cars require earlier, progressive braking with more trail-braking to rotate.
Tip 3
Quick Fixes
Locking fronts frequently? Reduce front bias 1-2% or brake earlier with gradual pressure. Car won't turn in under braking? Increase front bias 1% and practice trail-braking deeper into corners. Rear unstable in braking zones? Reduce rear bias or use smoother pedal release.
Master Your Braking
Common questions about braking in this car. Practice these techniques in our free app.
What's the best brake bias for the Mustang GT3?
What's the best brake bias for the Mustang GT3?
Does the Mustang GT3 have ABS or traction control?
Does the Mustang GT3 have ABS or traction control?
Why do my brakes lock up in the Mustang GT3?
Why do my brakes lock up in the Mustang GT3?
How late can I brake in the Mustang GT3 compared to similar cars?
How late can I brake in the Mustang GT3 compared to similar cars?
How can I practice braking in the Mustang GT3?
How can I practice braking in the Mustang GT3?
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