BMW K 1600 motorcycles risk rear wheel lock-up critical
Some transmission parts inside these motorcycles may not have been hardened properly when they were made. Soft parts can wear or break, and the bike can drop into two gears at once. If that happens, the rear wheel can lock up while you are riding, which can throw the bike off balance and cause a crash. Dealers will replace the shift forks, the fifth/sixth gear selector sleeve, and the sixth gear wheel free of charge once parts are available.