Operation Manual

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Field of application: All categories
• Tubeless tyres:
Special rims (with or without spoke holes that are sealed to be airtight) and tyres are sealed to be airtight and
make a tube superfluous. Nevertheless, in the case of a breakdown such a tyre can be mounted.
Field of application: Mountainbikes, crossbikes, racing bike/street
• Tube tyres:
The tube is sewn into the tyre. The tyre, including the tube, is adhered during assembly on to the specially
built rim. Here the assembly instructions of the tyre, adhesive and rim manufacturers are to be followed.
Field of application: Mountainbikes, crossbikes, racing bike/street
Please consult your specialist dealer on questions about your tyre type and size:
On bikes with StVZO approval, rim reflectors may also be installed.
7.1.1 Checking the position and tight fit
1. Shake both wheels strongly at right angles to the direction of travel.
• The wheels must not move in their mounting.
• The quick-release lever and thru axle must be closed
See section 8.6, Operating the clamping systems for wheels and the saddle post.
2. No cracking or grinding noises should be heard.
3. Carry out a visual inspection of the wheel installation.
• The wheels must be located centrally between the frame and brake.
• The wheels must be located centrally between the luggage rack struts if a luggage rack is mounted.
• The tyres must run parallel to the mudguards if any are installed.
• No part of the wheel may touch the frame, mudguards, luggage rack or other parts. Road bikes have
a minimum distance requirement of 4 mm from wheel to all other parts. For all other bicycles, the
minimum distance is 6 mm. Exception: Brake pads and brake blocks may be positioned very closely to
the brake disk or rim as long as they do not make contact.
7.1.2 Checking the wheel rims
7.1.2.1 Checking the rims for wear (only applies to bikes with rim brakes)
1. Check that the wear indicators (circumferential groove or several small drill holes in the rim edge) are
visible.
2. Run your finger nail across the rim flank. You should not feel scratches or scores.
7.1.2.2 Checking the rims for wobble:
1. Pick up the bike and rotate the front- and rear wheel in turn.
2. Pay attention to the clearance between rim and brake blocks, on bikes with disc brakes to the distance
between rim and frame strut or fork rod. Maximum permissible deviation per revolution:
• 0.5 mm for rims with rim brake
• 2.0 mm for rims without rim brake
7.1.2.3 Checking the rims for soiling (only applies to bikes with rim brakes)
1. Inspect the rims for soiling, in particular for oil or grease. Soiled rims must be cleaned immediately
(see section 14.2, How to clean and care for your bike).
7.1.2.4 Checking the tyre
1. Inspect your tyres for visible signs of damage, foreign bodies and wear.
• The tyre rubber must have its original profile over its whole surface.
• The tyre fabric under the rubber layer must not be visible.
• There must be no visible blisters or cracks.