Ranger63, I rode an Immortal Force nearly all of 2006 I started riding it at about 270 pounds and managed to get my weight down to 230 by the end of 2006. All the while on Ritchey WCS Protocols (these are actually a bit lighter than the Ritchey Pro) with no problems with the wheels. As with all internet recommendations the proviso is that YMMV. It will very much depend on how "light" your riding style is.