TWO things:
If you are going to rotate rear tires to the front someday (not sure if you will), wouldn't you want to go ahead and balance them now, and save a little wear on the rear shocks, etc.?
I just discovered that the tire shop I use got rid of their spin balancer, and now use a bubble balancer. I'm pissed - I don't believe that a bubble balancer really does a decent job.
Is there any chance these trucks are using the kind of wheel that has a ring that had to go over one side of the rim? If so, watch out. Those suckers will kill you - all it takes is poor seating and that ring will come flying off in a flash during inflation or reinstalling on the truck.
I believe the safe way to deal with these is a tire cage. Some say if you lay it on the floor with the ring side down (facing the floor)while inflating it will protect you, but I'm not so sure about that. I once saw a guy down on the floor doing this.
Anyone?