WINNEBAGO INDUSTRIES (WINNEBAGO) IS RECALLING CERTAIN MODEL YEAR 2009 THROUGH 2012 WINNEBAGO COMMERCIAL VEHICLE MODEL J38S, MODEL YEAR 2009 AND 2010 ADVENTURER MOTORHOMES MANUFACTURED FROM OCTOBER 30, 2008, THROUGH SEPTEMBER 9, 2011, AND ONE 2009 ITASCA SUNCRUISER MOTORHOME BUILT NOVEMBER 2009. THESE MOTORHOMES CHASSIS ARE EQUIPPED WITH BOSCH HYDRAULIC DISC BRAKES WHICH WHEN EXPOSED TO LONG PERIODS OF TIME OF NON-DRIVING MAY EXPERIENCE DIAMETRICAL BRAKE CALIPER PISTON GROWTH AND REDUCED PISTON TO BORE CLEARANCE POTENTIALLY LEADING TO BRAKE DRAG AND OVERHEATING RESULTING IN REDUCED BRAKE PERFORMANCE.