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In particular, rims made of compos-
ite materials, such as carbon fibre,
require special attention. Friction
caused by the rim brakes, but also by simply
riding the bike, puts a substantial amount of
strain on the bike.
• Only use brake pads that are designed for
use on the rims’ material.
• Each time before riding the bike, check for
wear, tear, defects, cracks and chipping on
the rims and wheels when they are made of
composite materials!
• If you find any changes, do not ride the
bike with this part until a specialist retailer
or manufacturer has checked the part and
deemed it to be fully functional.
• Never expose components made of carbon
fibre to high temperatures. Intense sunlight
can produce high temperatures, for exam-
ple when the wheel has been stored in a
vehicle. This could damage the componet’s
structure. Failling parts, falls and very seri-
ous injuries could result.
The permitted tyre pressure may not be ex-
ceeded when inflating the tyres. Otherwise
this could lead to the danger of a tyre explod-
ing. The tyres have to be pumped up with at
least the stated minimum tyre pressure. If the
tyre pressure is too low, there is a possibility
that the tyre could free itself from the rim.
On the side surface of the tyre, there is infor-
mation on the maximum permitted tyre pres-
sure and generally also on the minimum per-
mitted tyre pressure.
If you replace the tyres, only exchange them
for the same model with the same dimensions
and profile. The bicycle’s handling could oth-
erwise be negatively affected. This can in turn
result in accidents.
Tyres are available in various dimen-
sions. The tyre dimensions are stated
with normed information.
Example 1:
‘’46-622’’ states that the tyres
have a width of 46 mm and the rim has a di-
ameter of 622 mm.
Example 2:
‘’28 x 1.60 inches’’ states that the
tyre has a diameter of 28 inches and a width
of 1.60 inches.
Tyres and tyre pressure
The amounts for the recommended tyre pressure
can either be named in bar or psi. The following
table presents the conversions for the usual pres-
sure levels and shows which tyre widths these
pressures should be applied to.
Tyre width
Recommended tyre
pressure
20 mm
9.0 bar
130 psi
23 mm
8.0 bar
115 psi
25 mm
7.0 bar
100 psi
28 mm
6.0 bar
85 psi
30 mm
5.5 bar
80 psi
32 mm
5.0 bar
70 psi
35 mm
4.5 bar
65 psi
Tyre width
Recommended tyre
pressure
37 mm
4.5 bar
65 psi
40 mm
4.0 bar
55 psi
42 mm
4.0 bar
55 psi
44 mm
3.5 bar
50 psi
47 mm
3.5 bar
50 psi
50 mm
3.0 bar
45 psi
54 mm
2.5 bar
35 psi
57 mm
2.2 bar
32 psi
60 mm
2.0 bar
30 psi
Please also inform yourself using the
information provided your tyre man-
ufacturer. This could possibly be
different from the tyre pressures listed here.
Not adhering to these guidelines can lead to
damage to your tyres and inner tubes.
Example of tyre pressure information
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