2007 Saab 9-3 Owner's Manual - Page 254

254 Car care Winter tires Winter (snow) tires are recommended for winter climates where the majority of your driving will be done on snow and ice. Winter tires should be fitted to all four wheels to maintain a proper balance. Your Saab dealer can advise you of to the correct size tire for your car (if different from the original size) and also supply Saab approved winter tires pre-mounted on steel or alloy rims. Winter tires normally use a different speed rating compared to summer/all season tires. Make sure not to exceed the stated speed rating on the tires you use. Compact spare WARNING The spare tire or punctured tire must be stowed under the trunk floor, and secured in place with the retaining nut. The compact spare is light and easy to handle when changing the tire. Its use is only permitted when a standard tire has sustained a puncture. The maximum life of the tire is only just over 2,000 miles (3,500 km). Do not exceed 50 mph (80 km/h) with the compact spare fitted. The tire pressure should be 60 psi (420 kPa). Put the punctured tire in the spare wheel well under the trunk floor. Have the standard tire repaired and refitted as soon as possible. The spare tire, the tools and the jack with its crank are carried under a panel in the trunk. Fold the carpeting forward to ease access to the tools and spare tire. The screwdriver handle has a "button" for removing plastic rivets. This type of rivet must be removed when changing the light bulb in the trunk lid (see page 228). Your Saab is equipped with a trip computer and you can use its "Speed warning" function, to monitor driving speed since you must not exceed 50 mph (80 km/h), see page 90. Tire date code Tires should be regarded as perishable goods. As the tires age, the rubber becomes progressively harder, and the roadholding ability of the tires diminishes. This is particularly true on winter tires. Tires have a code that specifies their date of manufacture. The first two digits denote the week number and the last two digits the year followed by a filled triangle.