I've got a cheapo manual tire machine and a bubble
balancer here at the house and on some I've had to
re-mount them several times to get them round and
some what near on balance then put them on the balancer..
some slicks look like a egg going around... I will
on most of them drive it down the road then back and
jack it up and see if they are near round then balance..
I had a buddy that had a spin balancer and that was
nice to see if they were round(but he died and his
wife sold off his equipment)