Pit stops are one of the most important and controlled parts of a GT3 race. While they contain a lot of moving parts, every element is governed by clear rules designed to keep things safe, fair, and efficient.
Here’s a simplified breakdown of what actually happens during a GT3 pit stop.
Before anything else, the driver must respect strict speed limits: 48 km/h minimum in the fast lane and 50 km/h maximum in the entirety of the pit lane. Venturing outside of these speed limits can result in a penalty.
Each team has a designated pit box where the car must come to a complete stop. During a pit stop, the engine must be switched off, and only then can the pit crew begin work. If a driver overshoots the box, the car can be pushed back into position, but only by mechanics and under supervision from a pit official.
There’s a strict limit on personnel, with a maximum of 4 mechanics actively working on the car. Additional allowed personnel include one driver or driver assistant, one “vent man” (for refueling safety), one fire bottle attendant, and up to 2 support personnel. However, these additional members cannot perform mechanical work. If they do, they count toward the 4-mechanic limit.
A GT3 pit stop can incorporate several actions, sometimes all happening at once, including driver changes, tire changes, and refueling.
Key rules to know are that the driver change can only begin once the car is stopped and turned off, the engine must remain off during the stop and can only be restarted once the car is back on all four wheels.
Tire changes are also tightly controlled, with only two designated mechanics permitted to change tires. This ensures consistency and prevents teams from gaining an advantage by adding more crew members.
However, not every stop requires all actions to be performed, as driver changes are not mandatory every time, and teams are not required to change tires or refuel.
Before the car can leave the pit box, all crew members and equipment must be cleared of the car and everyone must move behind the working line. Only then can the driver rejoin the race.
Pit stops are highly important to the outcome of a race, playing a major strategic role. A clean, well-timed stop can gain positions, while a mistake can prove costly.
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