Having *just* pushed, walked alongside, sort of ridden the Guzzi with a flat rear tyre 2 miles back from work. I should have noticed something was amiss when it tried to spit me off on the Seven Dials. I will have such a cob on if I've damaged the rear rim. The tyre's fucked anyway the puncture is the final nail in its coffin (excuse pun). A grand total of 4000 miles from a BT45. Bugger.