I dont, I have freidns that do.
I run toyo's, if I really needed balance I could put on weights, but I get very little vib from my 38 x 1450's on trail ready beadlocks up to and inc 60mph. So I've never bothered to even attemp a balance of any kind.
Internal weights (pellets, sand, etc etc) are ok, but only work at higher speeds. Pretty much useless until after at least 30km/hr.