Tyre usage deemed to commence

In Simple Terms

A set of tyres is officially considered 'used' once your car passes the pit lane exit sensor during a pit stop, or when you drive away from your grid position at the start of the race. This timing rule determines when tyre usage penalties might apply if you don't meet the mandatory tyre compound requirements.

• Pit stop tyres become 'used' the moment your car's transponder exits the pit lane
• Grid start tyres become 'used' when you drive away from your starting position under your own power
• This definition is crucial for tracking mandatory tyre compound usage throughout the race
• The timing is automatic and sensor-based, removing any ambiguity about when tyre usage begins