Owners of HM 1100's out there - what size rear tyre are you running please? Mine is due a new one soon and looking at the standard specs it runs a 180/55/ZR17 whereas I just looked at what is on it and it has is a 190/55/ZR17 fitted so unsure what to get now!? (this is the first time I've had to buy a tyre for it hence the uncertainty)
180/55 is getting hard to find these days - generally superseded by 180/60. I have 180/60 Supercorsa on my M1100S (which has HM1100 Evo S forged wheels on it) if that helps.