Are you guys seriously still riding around with the same tire pressure in 90-degree heat as you do in 60-degree weather? Dont you know that summer heat can increase tire pressure by up to 2 PSI for every 10 degrees of temperature rise? Do you even bother to check your tire pressure before heading out on a ride or are you just winging it and hoping for the best? And what about the impact on bike performance? Are you aware that under-inflated tires can increase rolling resistance by up to 20% in hot weather? I see so many of you guys posting about how your bikes are feeling sluggish in the summer heat, but Im guessing its not the bike thats the problem, its the riders lack of attention to detail. So, how many of you are actually adjusting your tire pressure for the heat and taking into account the resulting impact on your bikes performance? Or are you all just too lazy to bother?