how often do you get punctures? i cycle to work every day on a road bike, about a 12 mile round trip. I swear I've got a puncture in each of the last 4 or 5 weeks, is that reasonable for the mileage i do? i've obviously replace both tyres and inner tubes and shit and the punctures still persist. what the fucks going on? i swear down i can't take the 123 bus much longer.