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