Balancing wire wheels with steel plate welded inside

[Pete]

It is NOT recommended to weld on steel wheels.
They are manufactured by roll forming which puts big stresses in the metal. Some wheels are normalized after forming, some are not.
If you do weld, it would be a good plan to magnaflux the wheel before use.
Be sure to check for radial distortion also.
That is the hardest to remove and the worst to tolerate.