Chrome wheels just do that .
The chrome ages , oxidizes , rusts , flakes off ?
The guy who changed your tire since you came without complaint of a leak probably just assumed they were fine and mounted new tires .
What you show in pics is not always gonna leak so until it does hey I don't think anyone can be blamed.
Least he should have done though when finished is just squirt something on them and check them .
The chrome ages , oxidizes , rusts , flakes off ?
The guy who changed your tire since you came without complaint of a leak probably just assumed they were fine and mounted new tires .
What you show in pics is not always gonna leak so until it does hey I don't think anyone can be blamed.
Least he should have done though when finished is just squirt something on them and check them .