Round #3 for 19.5 tires. Where have all the KM's gone?

A couple of years ago some one on here recommended Hercules tires. I bought a set and put them on, they are still on the truck. Wear is great but they won't balance. Tire store said the rims were bent but I doubt that all 6 rims are bent. Taking them to a truck tire shop and have them trued, see if that works. If you can afford Michelins go for it they are on my 02 Thunderbird and do great.