Discount Motorcycle Insurance, an online service that helps people find the best coverage at the lowest rates, has announced theft is increasing and offers tips on prevention. As reports of stolen motorcycles rise, a few makes have been found to be most vulnerable and account for over 77% of bikes stolen. There were 13,688 Hondas reported missing while Yamaha, Suzuki, Kawasaki, and Harley-Davidson rounded out the top five.