What kind of damage can really be repaired, when it comes to wheel bends, etc?

I am looking at a set of OZ Superleggeras that were driven solely on road courses, but I am afraid to close the deal as they have been repaired --- they were repaired by a professional wheel repair shop, of course, but...

... I just want some reassurance from someone other than the seller :D

Nothing against the seller - the seller is VERY reputable, in fact.

Thanks for the help,

Repaired how?

Not sure.

All I know so far is that two of them were damaged a li'l from hitting the curbing - the driver is a very competent one, truly.

I don't have too many details, though --- I know SuperLegs are pretty strong, but these are 18" and run on an E46 M3, so they were subject to a li'l more weight :D

Bent and straightened, fine. Cracked and welded, not so much.

Bent and straightened, fine. Cracked and welded, not so much.

Any ideas how exactly they straighten bent wheels?

And can they ever truly be returned to round again?