The 589's are a bit heavy but not as heavy as people think. Same with the ride, I think, me included, read too much into these posts where people said this was heavy or rode rough? I love my 589's so far, I did notice a slight and I mean slight difference in bottom end power and the ride is smooth as **** over a couple of km's an hour. Just keep this in mind when ever you are buying tires, there maybe slight weight gains and slight ride differences but most of the time it is minimal(sp) Mine are 27"s by the way but the pro's out weigh the cons by far. If you get a chance to try someones ride out before purchasing new skins, by all means take advantage of it!......Irv