Just changed the tires on my bike to Specialized Nimbus Armadillos. These tires are fast but I seem to have a problem that I just can't seem to fix. The tube keeps getting pinched by the rim. I have added a second rubber tire liner, and cloth tire liner but the problem persists. The side wall reads a maximum inflation of 100 psi. I will replace the tube (was using Kenda tubes) with a Bontrager tube to see what happens. Just can't seem to inflate past 80 psi. Would like to get up to 100 psi, although I do weigh 205. Any suggestions? Thanks for the advice.