Spare wheel: Tyres
WARNING: This page is about a different car, the 2001 Saab 9-3. However, it is still accessible from the selected car via links, so may be relevant.
Viggen: T115/70 R16
ME (Saudi Arabia) and Taxi/Police cars: 185/65 R15 H *
Others: T115/70 R
The spare wheel is designed for temporary use only and a maximum speed of 80 km/h.