Valve stem diameter minimum

In Simple Terms

F1 tire valve stems must have a minimum diameter of 4.95mm. This technical requirement ensures proper tire inflation system functionality and safety during races. The regulation helps maintain consistent tire performance and prevents valve failures.

• Valve stem diameter cannot be smaller than 4.95mm
• Applies to all tire valve stems used in F1 cars
• Ensures proper tire inflation system reliability and safety
• Part of technical specifications to maintain competitive fairness