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TECHNICAL GUIDE/INSTRUCTION
TYRE REPAIR
Tubeless tyres: Due to the specific regulations of different national governments, we can not give a
general recommendation regarding tyre repair.
Please refer to your distributor for information on your country‘s regulations. in case you are allowed to
repair a tyre, we recommend that you repair only small punctures which are restricted to the tread area,
by using a mushroom head type plug.The repairer is solely responsible for the repair and any instructions
given to the user concerning the repaired tyre. Repaired tubeless tyres should never be used with a tube.
Tubetype tyres: Tube repair is not permitted. Punctured tubetype tyres must have a new tube fitted. if
punctured, in addition to having the replaced, the tyre and the rim have to be inspected by an expert.
The puncture in the tyre should be repaired by a local vulcanisation, executed by a tyre repairer, so as
to prevent moisture from attacking the tyre casing. The repairer is solely responsible to the user for the
repair and any inspection of the repaired tyre.
TYRE SELECTION
When choosing your new PIRELLI motorcycle tyres, you must make sure that they meet the requirements
of your motorcycle and that they are suitable for the types of road you intend to ride on.
VALVE CAPS
Centrifugal forces work on the valve stem. At high speeds they have the same effect as pushing on the
valve with your finger. The tyre can deflate. The valve cap is the only part preventing it. Normally this
phenomenon happens only at very high speeds. But an old or low quality valve stem can open at speeds
lower than 200 km/h. Therefore the cap should always be tightly closed.
PIRELLI suggests the use of airtight metal caps with rubber seal.
VEHICLE FITMENT AND SIZE MATCHING
When choosing tyres always make sure that the selected tyres matches the sizes, load capacity and
speed index of the homologated tyre recommended by the vehicle manufactures:
• Load and speed index must not be lower as indicated in the operating manual of the motorcycle.
• When fitting a new tyre check that there is no interfering with any mechanical parts of the vehicle
especially at different running conditions.
NOTE:
Variations of tyre size from those indicated by vehicle manufacturers, even if technically possible, must
be in accordance with existing local regulations.
WHEEL ALIGNMENT
Be sure to align your wheels every time the rear wheel is removed or the chain adjusted. Every rotation of
an incorrectly aligns wheel results in additional tread wear, decreases tyre mileage, and affects steering
and cornering.
WHEEL BALANCING
Elastic bodies like tyres, cannot be constructed in a perfect, circular form, with perfect balance.Therefore,
be sure to balance a new tyre after installing it.There are two ways to balance a tyre: static and dynamic
balancing. Static balancing can be performed without rotating the wheel, and also measures the deviation
of masses with respect to the wheel‘s center plane. PIRELLI recommends dynamic balancing for rims
over 2,5 inches in width.
Technical guide/instruction