Endurance Fuel & Pit Strategy
Stop guessing fuel loads for iRacing Special Events and ACC Leagues. Ensure you don't overfill the car (losing time) or run out before the stint ends.
Load this exactly into the car to complete a 37 lap stint within your 65-minute window. It includes a 2 lap safety buffer.
Fuel Calculation Accuracy
This calculator assumes uniform fuel consumption across all laps. In reality, fuel use varies based on:
- Driver aggression and throttle mapping
- Track conditions and ambient temperature
- Engine condition and fuel quality
Always add a safety buffer (2–3 laps) to your calculated fuel total.
Methodology
Formula: Total Laps = Race Duration × Lap Time; Fuel = Laps × Fuel/Lap
Buffer: Safety margin added to lap count to ensure sufficient fuel for pace variation.
Pit stop timing assumes refueling during designated windows.
Frequently Asked Questions
How do I account for fuel consumption variance between drivers?
Different driving styles vary fuel consumption by 20-30%. Smooth drivers use less; aggressive drivers use more. Practice sessions reveal real consumption for your team.
Should endurance fuel planning include pit strategy?
Yes! Short stints = more pit stops = more fuel stops (time cost). Long stints = larger fuel loads (weight penalty). Optimize for your team's strengths.
How much fuel is safe to carry per stint?
Most endurance cars carry 60-80% of tank capacity per stint. Full tank adds significant weight (engine, brakes, tires must compensate). Balance fuel range vs. lap time.
Disclaimer & Legal Notice
All tools and calculators provided by Lapsite are for informational and educational purposes only. While we strive for mathematical precision, these results are approximations and should not be used as the sole basis for critical engineering, financial, or safety decisions. Lapsite Ltd and its creators provide no warranty, express or implied, regarding the accuracy or fitness of these calculations for any specific use.Always double-check calculations independently, especially for safety-critical components such as brakes, suspension, or structural changes. By using these tools, you agree that Lapsite Ltd is not liable for any mechanical failure, financial loss, or injury resulting from the use of this data.
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