Each car is allocated one set of the softest tyres for use in Q3. The cars that qualify for Q3 must return them after Q3; the cars that do not qualify for Q3 can use them during the race. The first ten drivers, i.e. the drivers through to Q3 must start the race on the tyre which set the fastest time in Q2, unless the weather requires the use of wet-weather tyres, in which case all of the rules about the tyres won't be followed. All of the drivers that did not participate in Q3 have free tyre choice for the start of the race. Any penalties that affect grid position are applied at the end of qualifying. Grid penalties can be applied for driving infractions in the previous or current Grand Prix, or for changing a gearbox or engine component. If a car fails scrutineering, the driver will be excluded from qualifying but will be allowed to start the race from the back of the grid at the race steward's discretion.