Bedienungsanleitung Kona 2021 (Seite 29 von 46) (Englisch)

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KONA OWNER’S MANUAL

incorrectly installed tubular tire can come off the rim,

causing you to lose control and fall.

1. TIRES: Bicycle tires are available in many designs and

specications, ranging from general-purpose designs to

tires designed to perform best under very specic weather

or terrain conditions. If, once you’ve gained experience

with your new bike, you feel that a different tire might bet-

ter 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. This may

also result in rim damage.

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 or digital 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.

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Kona 2021 Seite 29

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