It was easier than I thought it would be. Already had some 823 wheels that I was tired of dealing with flats on. Mounted some 2.5 High Rollers last night with two scoops of Stans. Everything seated up really easily, although I would say an air compressor is required to get the pressure to bead the tire. Air leaks out extrememly quickly the first couple times I filled it up until I got a chance to swish the Stan's around inside. Overall, it was pretty simple. I guess I will see tonight how much pressure they are actually holding when I get home from work.