Has anyone else been driving the car? Normally these happen from severe
impact such as potholes like you describe. Maybe you didn't hit one, but
someone else might of if they ever drove the car. I managed to find one
experienced welder in my city who took the chance and repaired one of my
allow rims, but it wasn't without 1,000,000 disclaimers, and even so, I
sold the wheels after a year (with the disclaimer, I didn't hide it),
because I just didn't want to take the chance. I'll say though that I
was able to use them for the entire year without any issues, even past
240km/h :)
BlackE87