BMW issued a recall on the R1100S model

On certain vehicles, an engine backfire during the starting process could cause either throttle body to loosen in its mount. If this happens, the fuel line leading to the right-hand fuel injector or the injector itself may be damaged or the line and injector may separate from each other. If this were to occur, fuel could be expelled from the line. Correction: Fuel distribution unit will be replaced with a unit incorporating a flexible right-hand fuel hose. In addition, the connection between the right-hand throttle body and the air inlet tube will be secured with two screws to prevent damage to the hose or injector should a backfire occur.