Buying a classic bike is an expensive business and mistakes can prove costly financially and in time, effort and stress. Wouldn't it be great if you could take an expert with you? With the aid of this book's step-by-step guidance from a marque specialist, you can! BMW's GS series is one of the world's milestone motorcycles, in production for over 25 years. It pioneered the adventure sport? category big bikes that are capable of traveling off-road, in many ways, it's the Range Rover of motorcycling. And it's now more popular than ever, thanks in part to the massive publicity surrounding Ewan McGregor and Charley Boorman's round the world trip, on GS's. This book is a complete guide to buying one of these iconic bikes secondhand: what to look for (10min and 30min evaluations); spares prices; guides to auctions and paperwork; lists of useful contacts in the GS community; and just as important, consideration of whether it's the right bike for you. You'll discover all you need to know about the GS you want to buy.  Working step-by-step through the bike's strengths and weaknesses. This books unique points system will help you to place the bikes value in relation to condition whilst extensive photographs illustrate the problems to look out for. This is an important investment - STOP! don't buy a BMW GS without this book's help. One hundred color photos, useful appendices and expert advice mean this book could save you 1000's.