Formula One racing features a single tyre supplier, with all teams using identical Pirelli rubber. The advantages of this (over multiple tyre suppliers) include closer racing and reduced testing and development costs.

At each Grand Prix every team is given access to two specifications of dry-weather tyre. Unless conditions are wet, drivers must use both specifications during the race. A green band on the sidewall of the softer compound allows spectators to distinguish which tyre a driver is on.

Over the race weekend, each driver has access to 11 sets of dry-weather tyres (six of the harder ‘prime’ specification and five of the softer ‘option’ specification), four sets of intermediate tyres and three sets of wet tyres.

During Friday’s first and second practice sessions the drivers are only allowed to use three sets of dry-weather tyres (two ‘primes, one ‘option’). One set of ‘prime’ tyres must be returned to the tyre supplier before Practice Two, and one set of each specification before the start of Practice Three.

A driver will then be allocated eight further sets of dry-weather tyres (four of each specification) to use over the rest of the event, but one set of each spec must be returned to the tyre supplier before the start of Saturday’s qualifying session. At the start of the race the cars that took part in Q3 must be fitted with the tyres the driver used to set his grid time.

Teams are free to use wet tyres as they see fit during qualifying and the race. However, during the preceding practice sessions, they may only be used if the track has been declared wet by the race director. If a race is started behind the safety car due to heavy rain, the use of wet tyres is compulsory.

Unless wet tyres have been used, drivers must use both dry tyre compounds during a race and failure to do so will see them excluded from the results. Or if the race is suspended and can't be restarted, 30 seconds will be added to the elapsed race time of any driver who hasn't used both compounds.

All tyres are given a bar code at the start of the weekend so that the FIA can closely monitor their use and ensure that no team is breaking regulations.