In yesterday’s New York Times “Spokes”, J. David Goodman asked if heat is the culprit behind the higher number of flats bike shops see during the summer. The theory is that higher temperatures raise the air pressure within bike tires, increasing the likelihood of flats.
Personally, I think heat is definitely not the culprit. If anything, higher pressure would lead to fewer flats by reducing the chances for pinch flats (of course, the probability of having a blowout increases with high pressure, but we’re talking flats, not catastrophic blowouts). I think it’s explained by the fact that more people are on their bikes during the summer, and that there is more debris on the road during the dry season (rain and wind help clear away debris fall through spring).
What’s your take?