Don't forget . . . just because you get a 6 or 8 or 10 ply tire, each has it's own MAX SPEED RATING !! . . . most trailer tires, if they have no speed rating on the sidewall, are only rated for 60mph MAX ! . . .

As for the balance issue, you know what it feels like on your car . . . so why would you not want to have the tires on your trailer balanced also ??? An extra little bit of $$$ up front, to allow you to have less worries, and more miles later . . .