FAQ

• How often should car tyre pressure be checked?
  Pressure checks, including the spare tyre, must be made every two weeks using an accurate gauge.
  
• In what conditions should the pressure be check?
  Tyre pressure should checked when the tyres are cold. Pressure increases during running, sometimes exceeding 20%. This is normal and is allowed for in the design of tyres.
  
• What is the recommended pressure for the spare tyre?
  Where different pressures are recommended for the axles of a car (the tyres on a given axle should always have the same pressure), the pressure of the spare tyre, if of the same type, should be at least 0,3 bar greater than the higher recommended pressure and be re-adjusted to the correct pressure when fitted on the car. For spare tyre/wheel assemblies of a different type to those already mounted on the car, consult the tyre manufacturer.
  
• What are considered "cold" tyres?
  Tyres are considered to be cold when they have not been run for at least one hour or have been run at low speed for not more than two or three kilometres.
  
• Do tyres grow old?
  Tyres age even if they have not been used or have only been used occasionally. Cracking of the tread and sidewall rubber, sometimes accompanied by carcass deformation, is evidence of ageing. Old and aged tyres must be checked by tyre specialists to ascertain their suitability for further use.
  
• Is regrooving of Passenger Car Tyres permitted?
  Regrooving of Passenger Car Tyres is not permitted.
  
• What is "AQUAPLANING"?
  Loss of tyre contact with the wet road due to the impossibility of expelling the water from the footprint area under these conditions.