WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Pressing Out Wheel Studs
Courtesy of VOLVO CARS OF NORTH AMERICA.
Press out the wheel studs. Pull the wheel stud into place with a wheel nut and a spacer.