ODI began investigating this issue after owners of model year (MY) 2004-2011 R-series BMW motorcycles reported incidents of pressurized fuel leakage from the fuel pump flange.Some owners first became aware of the problem when their pant leg was fuel-soaked.Prior to opening our initial investigation on November 16, 2012, BMW had concluded that the small number of warranty claims and owner reports did not indicate the existence of a safety defect trend.However, during the course of responding to our information requests, BMW re-examined its data and decided to conduct a recall (13V-617) of the subject motorcycles.In conducting recall 13V-617, BMW voluntarily expanded the scope of affected vehicles from ODI'soriginal scope, MY2005-2008 R-series motorcycles, to include the primary and auxiliary fuel pumps on all MY 2005-2011 R-series, MY 2005-2011 K12&13 models, MY 2010-2011 RR models, and the MY 2012 K1600 motorcycles.The total number of motorcycles subject to this recalled is 50,184.The 55 reports cited in this investigation can be viewed at: http://www-odi.nhtsa.dot.gov/owners/SearchNHTSAID under the following complaint identification numbers:10485789,10449393,10521322,10475150,10435325,10493015,10471642, 10448216,10488899,10356156,10433733,10442023,10492342,10435968, 10492961,10504324,10485882,10433013,10453738,10474390,10417320, 10485276,10444876,10508150,10485807,10492118,10491835,10425962, 10430734,10488652,10485274,10493320,10522421,10399423,10443840, 10448325,10490417,10485452,10433589,10467136,10420291,10503806, 10532145,10523763,10523626,10425514,10354202,10437222,10444742, 10454834,10532172,10487624,10435984,10452476, 10485337