Anatomy of a pit stop

Seven crew members are routinely allowed over the wall during pit stops per NASCAR rules. At times, NASCAR will inform  teams that an eighth crew member will be allowed over the wall for a pit stop with the responsibility of cleaning the windshield. An average efficient pit stop that consists of the changing of all four tires and a full tank of fuel can take anywhere between 13 and 15 seconds. The amount of pit stops during a race vary due to numerous factors – race length, caution flags, fuel mileage, tire wear and pit  strategy to name a few. Below is a look at the pit crew and their responsibilities during a routine stop during a race.