| Keep
the Pressure Up 
The right tyre inflation pressure for
your car can be found in the car manufacturer’s handbook. Most tyre manufactures also
supply correct pressure and fitment details for their tyres. Tyre pressures relate to
loads, speeds and vehicle handling and the right tyre pressure is vital for even braking,
maximum grip and good tyre life.
Inflation pressure should be checked at
least once a fortnight when the tyre is cold since there is an increase in pressure when
the tyre has warmed up after being run. A reliable pressure gauge should always be used.
It is dangerous to re-inflate a tyre
which has been run flat or seriously under-inflated and such tyres should be removed and
inspected by a tyre specialist.
Wheel Alignment
The correct tracking or alignment of your
wheels is important as it greatly increases the life of you tyres by avoiding excessive
wear on one side of the tread. Because the right tracking or alignment also improves the
handling of your vehicle, you will be more comfortable.
Age Deterioration
Tyres can deteriorate with age which
shows as cracking of the tread and sidewall rubber. Cracking is usually an indication that
tyres have been in service an extremely long time.
If cracking is severe the tyre must be
replaced. Tyres fitted to caravans and boat trailers which are parked for long periods of
time, particularly in coastal regions, will tend to age and crack more quickly than those
which are used and run frequently.
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Punctures and Repairs Repairs to tyres and tubes must be carried out to
meet the British Standard AU 159 and should always be entrusted to a specialist.
Essentially, this means plugging a hole, not patching over it.
All punctured or damaged tyres should be
removed from the wheel for internal and external examination to ensure that there is no
hidden damage that could cause a later failure.
Just Tyres recommends that neither
externally applied patch repairs or liquid sealants are used to repair a damaged tyre.
Just Tyres does not accept responsibility for problems resulting from these types of
repair. |
For safety reasons, Just
Tyres does not recommend more than two tread repairs for TR speed tyres and one tread
repair for higher speed rated cars. Repairs should only ever be carried out in the safety
zone shown below.
Tyres should always be re-balanced after
a puncture repair.
Caravans and Car Trailers
Caravan and trailer tyres may need higher
inflation pressures (normally an extra 5-7psi) than are required for the same tyres on a
car. It is essential that the correct pressures are maintained. Your Just Tyres expert
will be able to advise you on the right inflation pressures.
When towing, we recommend that the
pressure in the rear tyres of your car is increased by about 4-6psi to improve stability.
Wheels
You should never use a tyre on a damaged,
distorted or modified wheel since this could mean the tyre becomes damaged and deflated
and could result in the loss of control of the vehicle.
Many modern cars and 4x4 vehicles can be
fitted with alternative tyres and wheels than those fitted as original equipment by the
car manufacturer. If you would like more information about the possibilities for your
vehicle, please ask your Just Tyres specialist.
Tubes in Tubeless Tyres
Inner-tubes of the correct size can be
used with tubeless tyres if they are correctly fitted.
Please remember that by fitting tubes in
tubeless tyres, in the event of a puncture, the assembly will behave exactly like a tubed
tyre – it is likely to lose pressure more rapidly than a tubeless tyre assembly.
Where tubes for certain low profile tubeless tyres are not available, an alternative size
tube should NOT be fitted.
Tube Type Tyres
Tyres that are marked ‘Tube
Type’ or are not marked ‘Tubeless’ must be fitted with an inner tube. Some
vehicle manufactures recommend that only tube type tyres are fitted to their vehicles.
It is important that the advice in the
owner’s handbook be followed. A new tube should be fitted whenever the tyre is
replaced. |
