welcome to the forum shoaf79,,i did a 6" lift and wheel and tire package a couple weeks ago also and didnt have a problem w/wobbly tires but all the center caps were loose and rattled like crazy..
i took the wheels back off and took pliers and bent the lip of the center cap so it stuck out the back more and re torqued them to make them have a little more bite when they were tightened up..worked great..
you will find lots of helpfull people and previous post here that are very valuable when workin on your cart..
post often and cruise the old post and have fun doing it,john