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10
1. Valve position
NOTE:
Doesn’t apply to tires without tubes.
DANGER:
If the valve nipple is not in a
vertical position (doesn’t line up with the position of the
hub), there is a danger of it breaking off which would result in rapid pressure drop. This may
cause material damage or loss of control on the bike.
2. Pressure check
DANGER:
Underinflated tires are more likely to be punctured and make the ride more
dangerous. The tire can slip from the rim on an uneven surface and move along the rim which
can cause falls, collisions, or material damage. Always inflate the tires with optimal pressure.
NOTE:
Most manufacturers use the psi unit to denominate pressure on the tire. To metricize,
use the following table.
Psi
30
40
50
60
70
80
90
100
110
120
130
140
Bar
2,1
2,8
3,5
4,1
4,8
5,5
6,2
6,9
7,6
8,3
9,0
9,7
The optimal pressure can be found on the tire or in the provided rim instructions. The optimal
pressure can usually be found on the side. If you have any trouble, contact the seller.
NOTE:
The higher the weight of the rider, the more pressure is needed to inflate the tire.
Check the pressure with a pressure gauge (offered by the seller). If the pressure is too low, use
a pump to pressurize it. If the pressure is too high, open the valve and let the air out. It is
recommended to use a pressure pump with inbuilt gauge, so you can check the pressure while
inflating the tire.
NOTE:
There are several valve types: Schrader valve, Presta valve and Dunlop valve.
Presta valve
Dunlop valve
Schrader valve
3. Inspecting the tire surface
Lift up and slowly spin both wheels. Check the side and the top of the tire. The
tire’s surface
must be flat everywhere. There cannot be any bulging and the texture must be undisturbed. The
material should not peel off or be damaged in any way. Check the rims also.
INSPECTING THE SADDLE AND SEAT POST
DANGER:
If the seat post is not properly inserted into the frame, it can get loose and cause a fall,
collision or material damage.
1. Check that the seat post is firmly affixed to
the frame.
Grab the saddle and try to move it to the side. The
saddle and seat post must not move in any way.