*disclaimer* * I have very limited experience with this*
But I do have 'some' experience. First of all, I think the whole bb's damage tires, Golf balls fall apart stuff is like an urban legend. Everyone has a friend who says...
I will admit to having probably to many bb's in my tires. The ONLY time you hear them is when you come to a stop, and then only at the last second. They are gently falling from the top of tires at almost a complete stop. So I dont think there is anyway , anyF'nway, a golf ball or a wheel is going to get beat up.They are only falling from the top of the tire down, maybe a foot. They make no noise I can hear at takeoff or at speed.
And yes, I have broken the tires down after about 4000-5000 miles. (my odometer isnt correct) and the inside looked just as they did when new. My only thought is with bb's at extended highway miles they may retain more heat in the tire, but I dont really think so, you could also argue they would disperse it.
Now whos to say I didnt get incredibly lucky and my wheels and tires arent perfectly balanced anyway? Well, my answer to that is then the bb's didnt throw the balance off so they must work huh?