Thomas said:
Race King Supersonic 2.2" = 494gram
Speed King Supersonic 2.3" = 434gram
That is the exact combination that I am using currently on my Giant Anthem Advanced. The 2.2 Race King is really really close to the rear brake arch/seatstay support. When the tires was brand new, it definitely rubbed the arch, but now that there's some wear on the tire, it only occasionally touches when there's some mud/stones on the tire. I'm looking at getting the 2.0 for the rear to see how much clearance I gain.
On another note, the reason I'm using the Speed King on the front is due to a failure of the Race King that was there at first. I am running then with Stan's on Olympic rims. I had a "burping" incident on a big drop, where I had too much weight/not enough pressure on/in the front tire. The fork bottomed, and the next thing to go was the tire bead. The tire still had air in it afterwards (enough to ride down the rest of the descent), but when I got to the bottom and pumped the tire back up, it had a bit of a "tweak" to it. I thought nothing of it, expecting to re-seat the bead when I got home, and have the tire running true once again.
After re-seating the bead, the tweak was still there. "Oh well" I thought. "Live and learn". Next ride, I did it a 2nd time, and this time, the tweak was much worse. It seems that the carcass/kevlar bead was somehow damaged so that the tire no longer runs true. It's bad enough that on the road ride home from my ride, I was keeping the speed down because the tire was so badly out of true.
As far as I can tell, the tire is toast. There is no externally visible damage other than the fact that the tire is seriously out of true. Damn it, the thing is practically brand new. Anyone else ever experience this type fo failure? Needless to say, I'm running a little more pressure in the front tire these days.