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ROAD BIKE | OWNER’S MANUAL 2021
Make sure the inner tube does not get pinched and squashed between the tyre
and the rim. You can prevent this by pushing the inner tube into the hollow of
the tyre (c) with a finger as you work along.
Work the tyre into the rim by approaching the valve symmetrically from both
sides. Towards the end, you will have to pull the tyre vigorously downwards (d)
to make the already mounted portion of the tyre slip towards the deepest part
of the rim well. This will ease the job noticeably on the last centimetres.
Before fitting the tyre completely on the rim check again whether the inner tube
lies properly inside the tyre and press the last stretch of tyre over the edge of
the rim using the balls of your thumbs.
If this does not work, you will have to use the tyre levers (e). Make sure the bent
ends point towards the inner tube and the inner tube does not get damaged.
Push the valve subsequently a little into the tyre so that the inner tube does
not get caught between the rim and the tyre beads. Check whether the valve
stands upright. If not, dismount one bead again and reposition the inner tube.
To make sure the inner tube does not get pinched between the rim and the
bead, move the tyre sideways back and forth between the sides of the rim.
While doing so, also check whether the rim tape has shifted.
Inflate the inner tube to the desired pressure. The maximum pressure is indicat-
ed on the side of the tyre.
Check whether the tyre is properly seated by inspecting the fine witness line
(f) on the tyre just above the rim edge. This line should be even to the rim all
around the tyre. If it is not, deflate the tyre a little and check again. Starting from
the maximum tyre pressure you can now reduce the pressure through the valve
to suit your needs. Please observe the recommended tyre pressure range.
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