Every set of chrome wheels I've ever had both car and bike, never held air worth a ****.
I was told that the reason for this is that over time the chrome pops away from the alloy in places and the air escapes between the chrome and alloy. They do look good, just keep a close eye on the pressures. If I ever go chrome again, I'll install a remote pressure monitoring system.
There are alot of chroming companies in California, I wouldn't recommend the one I used last time.