Mustang GT3
Explore source-backed information and braking guidance for Mustang GT3 in iRacing.

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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 ABS system offers adjustable intervention levels, with positions 2-7 recommended for dry conditions and 8-12 for wet. Higher ABS 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.
Import Mustang GT3 Telemetry
Drop your Garage61 lap CSV and extract braking data for every corner. Generate personalized practice exercises based on YOUR telemetry, not generic patterns.
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And There's Much More
Improve your braking technique with this car and much more:
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Build from templates, draw brake curves, or record with your pedal
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General practice tips
Tip 1
Starting point
Start with the official setup and consult the simulator documentation for available controls. Appropriate brake bias depends on the car and conditions.
Tip 2
One variable
Change one setting at a time and compare several laps. Record the change and observed behavior before keeping it.
Tip 3
Comparable conditions
Compare similar fuel loads, tires and track conditions. One lap alone does not establish that a setting is better.
Frequently asked questions
General guidance for practicing and consulting car-specific sources.
Where can I find settings for the Mustang GT3?
Where can I find settings for the Mustang GT3?
How should I compare a setup change?
How should I compare a setup change?
How can I practice pedal control?
How can I practice pedal control?
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Ready to Master the Mustang GT3?
Put this knowledge into practice with Braking Lab's interactive brake training exercises. Import your telemetry and get personalized feedback.