2008 Volvo S40 Owner's Manual - Page 165

NOTE Please consult state or provincial regulations restricting the use of studded winter tires before installing such tires. 181 07 Wheels and tires Temporary spare Temporary spare The spare tire in your car is called a "Temporary Spare". Recommended tire pressure (see the placard on the B-pillar or on the fuel filler door) should be maintained irrespective of which position on the car the temporary spare tire is used on. In the event of damage to this tire, a new one can be purchased from your Volvo retailer. WARNING Current legislation prohibits the use of the "Temporary Spare" tire other than as a temporary replacement for a punctured tire. It must be replaced as soon as possible by a standard tire. Road holding and handling may be affected with the "Temporary Spare" in use. CAUTION The car must not be driven with wheels of different dimensions or with a spare tire other than the one that came with the car. The use of different size wheels can seriously damage your car's transmission. 182 07 Wheels and tires Wheel nuts Types of wheel nuts There are two different types of wheel nut, depending on whether the wheels are steel or aluminum.