FiSHAW UB200, Manual

Page: 41 / 65

Page 40 of 64
The tyres must be inflated to the proper
inflation pressure to provide an optimal
compromise between smooth running and
riding comfort. Properly inflated tyres are also
more resistant to punctures. An insufficiently
inflated tyre can easily get pinched
(“snakebite” ) when it goes over a sharp kerb.
The air pressure recommended by the
manufacturer is given on the tyre side or on
the tyre label. The lower of the two pressure
specifications makes for better cushioning for
lightweight riders and is therefore best for
cycling on a rough surface. Rolling resistance
on level ground decreases with growing
pressure, but so does comfort. Highly inflated
tyres are therefore most suitable for heavy
riders and for riding on tarred roads. Therefore,
adjust the pressure to your weight and your
riding habits.
Inflation pressure is often given in the old
system of units, i.e., in psi (pounds per square
inch).
Clincher and folding tyres and rims alone are
not able to hold the air. Therefore, an inner
tube must be placed inside the tyre to retain
the air pressure.
The rims of clincher and folding tyres require,
in general, a high-value rim tape. This rim tape
protects the inner tube from the braking heat
which could make the tyre burst.
Replace tyres with a worn tread or with
brittle or frayed sides. Dampness and dirt
penetrating the tyre can cause damage to its
inner structure. The tube might burst. Risk of
an accident!
If you mount a new tyre with another
size than the standard tyre mounted, it might
be possible that the clearance between the
front of your shoe and the wheel will be
reduced when you ride at reduced speed. Risk
of an accident!
Treat your tyres with care. Always ride
your bike with the prescribed tyre pressure
and check the pressure at regular intervals, at
least once a week. Riding with too low or too
high air pressure may make the tyre come off
the rim or burst.
Clincher and folding tyres allowing an inflation
pressure of five bars or more have to be
mounted on hook bead rims, identifiable by
the designation “C”.
Observe the maximum pressure value of the
rim. The pressure is dependent on the tyre
width. You can find the values in the operating
instructions of the rim or wheel manufacturer
on their respective websites.
Please note that an electric bike weighs
more and that your usual tyre pressure may
be insufficient A higher pressure gives a better
riding stability and reduces the risk of a
puncture. The minimum and maximum
pressure (in bar or PSI) is indicated on the tyre
side.
VALVES
There are two valve types generally used on
almost all types of city and trekking bikes:
1. Presta valve; This valve is nowadays used on
almost all types of road bikes.
2. Schrader valve; This is an adapted car tyre
valve and is used on mountain bike and e-bike
tyres.