UKGSer forum covers all BMW models. I seriously considered a GSA so did some research on there. Lots of info on there, so much so that it put me off the idea of owning one, but if you are hell bent on dipping your toe in the BMW pond then it is a good place to go. Fair warning though, some of the threads can become a little heated and the topic can be on any subject. Oil (who doesn't love a good oil thread?), washing the bike, recalls (you really need a flak jacket for those), tyres, anything really. It's usually the fan boys vs the practical owners and there are keyboard warriors on both sides, so no-one gets the upper hand. Have a nosy round then meet you back here for some sensible, well moderated forum time where needless quotes are removed, the banter is genuinely light hearted and the only nonsense is the stuff I post...