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Kona 2017 Manual

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KONA OWNER’S MANUAL
signs to tires designed to perform best under very spe-
cic weather or terrain conditions. If, once you’ve gained
experience with your new bike, you feel that a different tire
might better suit your riding needs, your dealer can help
you select the most appropriate design.
The size, pressure rating, and on some high-performance
tires the specic recommended use, are marked on the
sidewall of the tire [see Fig. 17]. The part of this information
which is most important to you is Tire Pressure. But some
wheel rim manufacturers also specify maximum tire
pressure with a label on the rim.
WARNING: Never inate a tire beyond the
maximum pressure marked on the tire’s sidewall or
the wheel rim. If the maximum pressure rating for the
wheel rim is lower than the maximum pressure shown
on the tire, always use the lower rating. Exceeding the
recommended maximum pressure may blow the tire
off the rim, which could cause damage to the bike and
injury to the rider and bystanders.
The best and safest way to inate a bicycle tire to the
correct pressure is with a bicycle pump which has a built-in
pressure gauge.
WARNING: There is a safety risk in using gas
station air hoses or other air compressors. They are
not made for bicycle tires. They move a large volume of
air very rapidly, and will raise the pressure in your tire
very rapidly, which could cause the tube to explode.
Tire pressure is given either as maximum pressure
or as a pressure range. How a tire performs under
different terrain or weather conditions depends largely
on tire pressure. Inating the tire to near its maximum
recommended pressure gives the lowest rolling
resistance; but also produces the harshest ride.
High pressures work best on smooth, dry pavement.
Very low pressures, at the bottom of the recommended
pressure range, give the best performance on smooth,
slick terrain such as hard-packed clay, and on deep, loose
surfaces such as deep, dry sand.
Tire pressure that is too low for your weight and the
riding conditions can cause a puncture of the tube by
allowing the tire to deform sufciently to pinch the inner
tube between the rim and the riding surface.
CAUTION: Pencil type automotive tire gauges
can be inaccurate and should not be relied upon for
consistent, accurate pressure readings. Instead, use a
high quality dial gauge.
Ask your dealer to recommend the best tire pressure for
the kind of riding you will most often do, and have the
dealer inate your tires to that pressure. Then, check
ination as described in Section 1.C so you’ll know how
correctly inated tires should look and feel when you
don’t have access to a gauge. Some tires may need to
be brought up to pressure every week or two, so it is
important to check your tire pressures before every ride.
Some special high-performance tires have unidirectional
treads: their tread pattern is designed to work better in
one direction than in the other. The sidewall marking of a
unidirectional tire will have an arrow showing the correct
rotation direction. If your bike has unidirectional tires, be
sure that they are mounted to rotate in the correct direction.
2. TIRE VALVES: There are primarily two kinds of
bicycle tire valves: The Schraeder Valve and the Presta
Valve. The bicycle pump you use must have the tting
appropriate to the valve stems on your bicycle. 27
2K17_Kona_Owners_Manual.indd 27 29.1.2016 15.27
… 27 …


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