This isn't a Buick question, but it's relevent to all makes: I just got a fantastic deal on a pair of used factory gold "crisscross" 16" X 7" cast aluminum wheels for my '94 Pontiac Bonneville. Visually they appear to be OK. And if I tap them with my knuckle they ring like a bell. But I really would like to know for sure if there are any hidden cracks before I put tires on them and have one fail at 65 mph. How can they be checked? Will magnafluxing work on something like this, or is there some other procedure? Thanks. Larry
