MG ZR Series Owner's Manual page 133

Tyre wear indicators
HB0067
Tyres fitted as original equipment have wear indicators moulded
into the tread pattern at several points around the circumference.
When the tread has worn down to 1.6 mm, the indicators will
come to the surface of the tread pattern, producing the effect of a
continuous band of rubber across the width of the tyre.
NOTE: If tyre wear is uneven (on one side of the tyre only) or becomes
abnormally excessive, the wheel alignment should be checked by your
dealer.
The indicators provide warning that there is insufficient tread
remaining to provide good traction, particularly on wet roads, and
that the tyres no longer comply with legislation requiring a
minimum tread depth of 1.6 mm.
For safety, a tyre MUST be replaced as soon as a wear indicator
becomes visible.
Tyres
Punctured tyres
Your car is fitted with tubeless tyres, which may not leak if
penetrated by a sharp object, provided the object remains in the
tyre. If you are aware of this occurring, reduce speed immediately
and drive with caution until the spare wheel
repairs undertaken.
A puncture of this kind will eventually cause the tyre to lose
pressure, which is why regular (and frequent) checking of tyre
pressures is important. Punctured or damaged tyres must be
permanently repaired or replaced as soon as possible.
Replacement tyres
DO NOT replace wheels with any type other than genuine
MG Rover parts. Alternative wheels, which do not meet
original equipment specifications may adversely affect the car's
driving characteristics and should not be fitted.
Wheel rims and tyres are matched to suit the handling
characteristics of the car. Changing the specification of a wheel or
tyre can adversely affect the car's handling and, ultimately, your
own safety in emergency road situations.
To be safe, ONLY fit replacement tyres that comply with the
original specification (see 'WHEELS & TYRES', page 176). In
addition, ensure that the load and speed ratings shown on the side
wall of each tyre are the same as (or exceed) those of the original
equipment. Contact your dealer for further information or
assistance.
Always have replacement wheels and tyres balanced before use.
*
can be fitted or
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