Pit Stop Time Estimator
Calculate your endurance racing or sim-racing pit box time based on fuel loads, driver swaps, and crew limitations.
Check this if your series requires fueling to be 100% complete before tires can be touched by the crew.
Summary: Based on changing 4 tires with a 1-person crew per tire and adding 80 liters of fuel at 3.0 L/sec, the estimated total stationary box time is 63.5 seconds. In this scenario with parallel IMSA/F1 rules and no driver swap, the critical path bottleneck is mathematically tires.
Logic & Assumptions
Parallel vs Serial: If WEC-style serialization is off, total time is simply MAX(FuelTime, TireTime, DriverTime) + 3.5s Entry/Exit. If serialization is on, time is MAX(FuelTime, DriverTime) + TireTime + Entry/Exit.
Crew Efficiency: The tire time models transit delay if fewer mechanics are assigned than corners changing.
Frequently Asked Questions
What's an average fuel rig flow rate?
Gravity rigs in IMSA/WEC flow roughly 2.5 to 3.2 Liters per second. Standard gas station pumps are about 0.6 Liters per second. Quick-fill dump cans are around 1.5 to 2.0 L/s.
How long should a driver swap take?
Pro GT3 teams can execute a driver swap in 12-15 seconds. Club endurance racers often take 25-35 seconds factoring in radio cables, drink tubes, and belts without spring-loaded tensioners.
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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