BMW's GS series is one of the world's milestone motorcycles and has been in production for over 25 years. It pioneered the 'adventure sport' category and in many ways, it's the Range Rover of motorcycling.

Peter Henshaw has had an enthusiasm for anything with wheels from an early age - from bicycles to 500hp tractors. He was the editor of Motorcycle Sport & Leisure for five years before going freelance, and now contributes to a whole range of transport magazines, including MSL, TAG, A to B and Tractor, as well as The Telegraph. He's also written over 30 books, including 10 about bikes, and is an all-year-round motorcyclist who does not own a car.