54 I General User Manual25 Bike carriers for mounting onroof and rear of car› Only use roof and rear-mounted bike carriersthat meet the requirements of the road trafficlicensing regulations in your country (the RoadTraffic Licensing Regulations (StVZO) in Germanyfor example). Non-approved roof and rear-mount-ed bike carriers are not safe for use in traffic andcan cause accidents.› Adjust your driving to take the load on your carroof into account. Bear in mind that your car'soverall height has changed.The bike could come off the carrier and cause a seri-ous accident. When transporting the bike, check regu-larly that it is still securely fastened.Loose parts such as tools, luggage and tool kits, childseats, tyre pump, etc. could detach in transit and en-danger other road users. Remove all loose parts fromthe bike before setting off.› Avoid transporting the bike upside down. Onlyattach the bike by the handlebar, handlebarstem, bike saddle or seatpost if so intendedby the manufacturer of the carrier. Do not usemountings that could damage the bike fork orframe.› Do not attach your bike to the roof or rear-mount-ed carrier by its pedal cranks. Always attachbikes by their wheels when transporting them,unless the carrier is designed for something else,as otherwise the frame and fork of the bike couldbe damaged.You can also find important information on using andfitting add-on components and accessories in theInternet on the pages of the relevant manufacturer.➠ Chapter 29 contains a link list.26 Carbon componentsCarbon is a specific material that requires special han-dling and care when setting up and carrying out mainte-nance on the bike as well as when riding and also duringtransportation and storage.26.1 PropertiesCarbon parts must not be deformed, dented or bentfollowing an accident or crash. It is possible that fi-bres have been destroyed or have detached althoughthis is not evident externally.You should therefore inspect the carbon frame and allother carbon components very carefully if you come off thebike or if it falls over. If you are not absolutely sure thatthe bike is still in a sound condition, have the carbon com-ponents in question checked by an expert.26.2 TorquesSome carbon components require lower tighteningtorques than metal components. If the tighteningtorques are too high, this can lead to hidden damagethat may not be visible externally. Frames or othercomponents can break or change to the extent thatthey could fall off. You should therefore always ob-serve the information enclosed by the manufacturerwith the component(s) or ask a specialist dealer foradvice. Use a torque wrench to ensure the right tight-ness is maintained.If your bike has a carbon frame and a bottom brackethousing for a BB30 bottom bracket please note thefollowing:In this case you can fit an adapter so that a bottombracket with conventional BSA thread can be used.However, bear in mind• You can only install the adapter if the frame iscompletely undamaged. Repairing a defectiveBB30 housing serves no purpose. If it is notinstalled correctly, the bottom bracket housingmay be damaged which would render the war-