I've noticed that the front and rear tyres (Battleaxe's?) have very very fine cracks in them. I would assume that this means the tyre has gone off? When I got the bike about a year ago they were both newish tread wise, the back had some wear. Now after only 4000km's the front is still good and those cracks seem a lot smaller but the rear has worn down to the wear bars in the center. I mostly commute / tour so I don't really wear the sides too much. I figured that as I'm replacing the tyre (rear) I'd have a bit of fun with a burn out. I did a little one to start and noticed that I wasn't laying much rubber but there was heaps of fine black tyre "dust". The bike was sitting for about 6-10 months prior to my buying it. I have not noticed this cracking on any of my other bikes but then again none of them sat as long as this one either. The bike is 15,000km old (03). Q1: What tyre would be reccomended for touring / commuting on a budget? Q2: Tyre pressure for a GS 500 (about 183kg dry) with a 86kg (including gear )bloke on board. Q3: Expected life of the above reccomended tyre. Q4: Are the tyres on it now "Off"?