So I'm refilling my tyres this morning, as I do every week, when I see this in my back tyre: So I say to myself, "That's a bit of a worry, I'd better take a photo at lunchtime and ask Netrider if I need a new tyre." So at lunchtime I'm looking for the crack in my back tyre and I see this: Notice the rust-coloured thing on the 'M'? That's the tip of the nail. That's when I got chills. So now the question is can I even ride that thing home? Also, what's a good, economical, confidence inspiring tyre for a Kawasaki ER-5? My riding is 40% urban, 40% freeway, 20% hills.