I just mounted a set of 700x28 Armadillos to replace the 700x38 Kendras that came on it. Pressure difference is silly, 85 for the Kendras vs 115-125 for the Arms, not sure if it's a good thing or not, the last bike I had that had high pressure tires like that broke spokes more often than not. I was told it was a problem during the time period that the bile would have been built, I was told that it was due to a whole batch of bad spokes out of china. We'll see what happens.