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Guide
Bike parts & components
Technical compatibility comes before intended use. Read the marking on the existing part and compare dimensions, fittings and approvals with the replacement.
Key points
- Match tyre and tube sizes using the full existing marking.
- For tubes, also check valve type and valve length.
- Racks need suitable fittings and compatible load limits.
Which design suits your use?
| Use | Design | What matters |
|---|---|---|
| Replace a tube | DesignMatching size range | What mattersCheck the tyre code and valve. A similar inch name alone is not enough for a reliable match. |
| Renew a tyre | DesignCompatible tyre | What mattersRim, frame clearance and terrain all matter. Compare the full technical requirements. |
| Luggage & fittings | DesignRack or adapter | What mattersCheck fitting dimensions, mounting points and load limits. The adapter and attachment must explicitly match the existing construction. |
| Small adjustments | DesignModel-specific accessories | What mattersMatch the product designation and mounting method exactly. A similar-looking part is not automatically compatible. |
Designs compared
Matching size range
Check the tyre code and valve. A similar inch name alone is not enough for a reliable match.
- Advantage: Replaces a compatible inner tube
- Drawback: Size and valve must match
Compatible tyre
Rim, frame clearance and terrain all matter. Compare the full technical requirements.
- Advantage: Tread for the chosen surface
- Drawback: Rim and frame restrict compatibility
What to check before buying
| Question | In brief | Why |
|---|---|---|
| Which marking? | In briefRead the existing part | WhyRecord the full designation: different sizing systems can use similar names. |
| Which mounting? | In briefCheck fitting points | WhyBolts, axles and adapters must suit the actual construction. |
| Fit it yourself? | In briefInstructions and tools | WhyIf you lack suitable tools or experience, use a workshop for correct installation. |
Frequently asked questions
Is the inch size enough for a tyre?
No. Similar inch descriptions can refer to different dimensions. Compare the full technical marking and the requirements for the rim, tyre and bicycle.
Will any valve fit my rim?
No. Valve type, hole and required length must match. Check the existing equipment and manufacturer specifications before ordering a tube.
Can I fit any luggage rack?
No. Your bicycle needs suitable mounting points or an expressly approved system. Observe the load limits of all parts and follow the installation instructions.
When should I use a workshop?
When compatibility is unclear or you lack suitable tools and experience. Safety-related fittings in particular need correct installation and checks following manufacturer guidance.
Last updated: October 2026
What matters to you?
Replace a tube
Matching size range. Check the tyre code and valve. A similar inch name alone is not enough for a reliable match.
- Matching size range
- Read the existing part
- Check fitting points
Renew a tyre
Compatible tyre. Rim, frame clearance and terrain all matter. Compare the full technical requirements.
- Compatible tyre
- Check fitting points
- Instructions and tools
Luggage & fittings
Rack or adapter. Check fitting dimensions, mounting points and load limits. The adapter and attachment must explicitly match the existing construction.
- Rack or adapter
- Instructions and tools
- Read the existing part
Small adjustments
Model-specific accessories. Match the product designation and mounting method exactly. A similar-looking part is not automatically compatible.
- Model-specific accessories
- Read the existing part
- Check fitting points
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