A cheap pit-stop is when conditions on track mean the total time lost during a pit-stop is less than under normal circumstances. Typically under a safety carThe FIA runs the event and is responsible for the safety of the drivers, crew, marshals and spectators. To manage... or virtual safety car
The Virtual Safety Car (VSC) is a system to slow the cars down to a safe speed while the problem... There's more....
Each track will have a time loss for a visit to the pitsThe Pits refers to the area immediately outside a team's garage where they are able to work on the car,... There's more.... When the car enters the pit-lane, its speed is limited to 80kph, down from 300 plus. With the 2 – 3 seconds it takes to change the tyres
Today's F1 cars are running 18-inch wheels (up from 13 inches in recent years) with the widths unchanged - 305mm... There's more..., the total pit-stop will cost around 22 seconds. This differs from track to track due to the length of the pit lane
The Pit lane is a 3.5m wide access lane that runs parallel to the race track that the cars use... There's more....
If the course is under a safety car or virtual safety car, the differential time lost is less, as the other cars are travelling at roughly half the normal speed (this varies from circuitA circuit is a racetrack for car racing. There's more... to circuit).
MercedesMercedes-Benz, a brand of the Mercedes-Benz Group, has been involved in Formula One as both team owner and engine manufacturer... There's more... AMG
An iconic sports car brand, AMG was founded in 1967 by two former Mercedes-Benz engineers. The company would go by... There's more... has a great article explaining safety cars – here