Originally Posted by
NomarsGirl
I understand the principles of physics. But the optimum tire size/pressure does assume a perfect road surface and a certain level of efficiency of the rider. The pros are much more efficient than us mere mortals. A rider who is feeling sore from every bump in the road isn't going to be as efficient as one who is more comfortable on the bike. But at the same time, really big tires are just going to feel heavy and sluggish and that will wear you down too. So while you can crunch equations all day, the truth is the best tire is the one that works best for the individual rider allowing him to have his best ride (which isn't necessarily the fastest ride).
You do not understand the principles of physics. Correct analyses do not assume a perfect surface. Rider efficiency is irrelevant. Pros as a group are no more efficient than other riders (unless you’re using some made up definition known only to you). Comfort has no effect on efficiency. Yes, optimum tire/pressure choice is a matter of personal preference. Fastest tire/pressure is not.