I have been commuting in record tieing heat the last few days. It is interesting. Todays ride home is supposed to be 107. Luckily I have a frozen water bottle ready! I got a pinch flat on my way in (tires were at 110 PSI too). The heat makes patching a breeze as the fluid gets tacky within 10 seconds or so. Overall it was a nice ride. I had a really pleasant breeze to cool me off while changing the tire.