Tires And Tubes - Specialized Roubaix Comp Road Manual De Instrucciones

1. Tires
Bicycle tires are available in
many designs and specifications,
ranging from general-purpose
designs to tires designed to
perform best under very specific
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
specific 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.
Most Specialized bicycle tires are covered by pressure rating ranges based
on tire size, however, certain tires have different pressure ranges based on
the intended use of the tire. To determine the correct tire pressure range for a
specific tire, please refer to the tire pressure range specified on the sidewall of
the tire, or refer to www.specialized.com for a list of tire pressures by tire model.
TYPE SIZE
Mountain 26" / 29"
Road 700 x 23/25c
City 700 x 28/30c
City 700 x 32-38c
City 700 x 42-50c
Children 12"/16"/20"/24"
WARNING: Never inflate a tire beyond the maximum pressure
marked on the tire's sidewall. 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 inflate 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. Inflating the tire to near its maximum recommended
G. Tires and Tubes
PSI
35-65
110-125
85-95
75-100
50-100
35-65
31
Fig. 17
BAR KILOPASCALS
2.5-4.5 241-448
7.5-8.5 758-862
6.0-6.5 586-655
5.0-7.0 517-689
3.5-7.0 345-689
2.5-4.5 241-448