Hello. I have a Keystone Outback 210 RS that I am replacing the original tires on. The new tires are load range E and require pressures of 60lbs for single axle and 80lbs for double axle. Unloaded weight on the trailer is roughly 4800 pounds. Eighty pounds seems like a bit much to me and I was wondering if I should shoot for somewhere around 70 or just go for the recommended 80. Also,I was told by one RV dealership that the new tires didn't need to be balanced and another one said they did. What does everyone think about that? Thanks for any help and suggestions.