Four tires mounted on rims and palletized weighed 550 lbs when delivered to my home. I had 245/70R19.5 tires on aluminum rims. Your GM will only fit the 225/70R19.5 unless you modify suspension or wheel well liners, so they will be slightly lighter.
The Rickson rims are heavier steel with a 5000 lb load rating using OEM offsets. The Vision rims are lighter aluminum with a 4500 lb rating using greater outside offset which gives the truck a slightly wider stance. Some people will argue that the larger offset will affect wheel bearing and tie rod life, but no one has come back with proof. I chose the lighter aluminum rims knowing I was not going to exceed 9000 lbs on either axle but chose 16PR rated tires to get the stiffest sidewalls.