I weighed my 27.5" Pitbull Rockers today. WOW. Came in at 43.08 lbs, no rims. These are some HEAVY tires. They are also the most gnarly tread design I've ever seen. They are the 8 ply Ubers. Needless to say, I'll be leaving them behind for my trip to the dunes this weekend. I cannot wait, however to get these things on the Rubicon.