Sugarphreak - I agree with you that the cleanmpg.com is biased and I know those guys go to the extreme with that said, I believe there is a lot of good info on that site which happens to be factual but like all internet forums you must weed through the info.
Now, for the psi issue several others on here run 50psig as I do and have experienced no compromise with the FIT and continue to improve our mpg.
I am skeptical about the 60psig which is why I haven't jumped straight to it. I was skeptical about 50psig and I slowly increased my psig to 35, 38, 40, 45 and finally 50. The only differences are better mpg and increased coasting ability. I have not noticed any negatives with theses increases except a stiffer ride(which is a matter of opinion that it is negative).
Also, remember we are striving to achieve higher mpg NOT auto cross, race or drive reckless. We drive the speed limit or below(most of the time below) and pay very close attention the happenings around us. We did not achieve 50+mpg overnight and have developed/improved our driving techniques to adapt to the situations we put ourselves in. With that said, I am not saying 60psig is the best tire pressure for our FITS or for anyone. I WANT to experiment with it and come to my own findings/conclusion. Again, I am skeptical about 60spig.
