There is a useful thread on the Turbobricks e-group that lists all the Volvo wheels:
https://forums.turbobricks.com/showthread.php?t=72501
From that they seem to be "Caligo" wheels:
More info from a quick search.
Introduced on the Volvo C30 Series in 2009-2010.
Volvo Part Number
8698220
Volvo Stamping Number
8665466
Bolt Pattern
5 x 108mm
Color / Finish
Silver Bright (936)
Diameter & Width
16″ x 6.5″
Offset
52.5mm