Hookless vs. Hooked Rims

Continental’s safety recommendations for hookless setups:

1. Before mounting the tyres, check all components (rim, tyre, valve, rim tape) for damage. Damaged parts should always be replaced to ensure maximum safety. Please also check the expiration date of your tubeless sealant. If exceeded, exchange your tubeless sealant.
2. Follow Continental’s mounting and care instructions for bicycle tyres.
3. Always check the hookless compatibility of tyre and rim. Therefore, check the tyre packaging and the information of your rim provided by the rim manufacturer. 
4. Always check the maximum inflation pressure and maximum inner rim width of the tyre on its packaging. Never exceed the permitted values! Be aware that they differentiate between different models and size designations.
5. Always check the rim manufacturer’s hookless guidelines. Many rim manufacturers offer own tyre / rim compatibility tables. Be aware that the maximum tyre pressure and maximum inner rim width stated by rim manufacturer and tyre manufacturer for a specific tyre size can differentiate. If they do, the lowest value is the one to follow.
   Example:
   • Max. inner rim width by tyre manufacturer for a 28-622 tyre on a hookless rim is 23mm
   • Max. inner rim width by rim manufacturer for a 28-622 tire on a specific hookless rim is 25mm
   → follow the lower value, in this case 23mm inner rim width
   
   
6. Never exceed the maximum hookless inflation pressure listed for your tyre. The inflation pressure should be checked before every ride. Always keep possible temperature differences between where the inflation pressure is checked and where the bike is ridden or stored in mind. With rising temperatures, the pressure inside the tyre rises as well and can potentially exceed the maximum inflation pressure. With every 10°C | 18°F rise in temperature, the inflation pressure increases by roughly 0.17 bar | 2.5 PSI! If the actual inflation pressure exceeds the maximum (hookless) pressure, safe usage of the tyre cannot be ensured! 

For customers facing extreme temperature changes when riding, Continental recommends:

• Do not inflate the tyre to the maximum permitted hookless pressure. Thereby, in rising temperatures, the risk of exceeding the maximum hookless inflation pressure will be reduced.
• Or choose hooked rims instead of hookless rims. 

At Continental, rider safety is our number one priority. In case of questions or concerns, please don't hesitate to contact Continental customer support.