Welcome to the LAT-9 club. I am near Chicago so my guy can’t
help.
I understand that some BMW’s use wheels without holes and
their dealers have the ability to balance. Most big stores have
machines that can do the job if (1) they bought the additional
cost adapter plate and (2) are in the humor to install in on
their machine.
My guy uses the old fashioned strobe balancer spinning the
wheels while on the car.
If you can get a spin balance adapter to hold (they don’t fit
the rims) you can spin the on the rear. But no faster than
60 mph as the true speed is double or 120 mph.
DONT please DONT cut the heads off. I can not tell you the
number of LAT-9 owners looking for heads.
Dave