Iâve got a set of BMWs â a K1200S, R1200GS and a K1200LT. This morning I decided to change the K1200S and Iâve chopped it in for a new Harley Davidson Nightster. Iâve not had a Hog before so this will be a first but the reviews all look great. Do any Arrsers have experience of the Sporster? Will I need to wear leather trousers with the arse cut out?