Sadly it happens. Last year I put a new set on tyres on my fz1. �240 they fitted them I left the shop done around 35 miles and got a puncture cost me another rear tyres at a cost of �130 fitted �� the same day, As you can not legally fix z rated tyres. I have goop in my tyres now, so at least if I get a nail in my tyre I should still be able to get home.