2012 Volvo XC70 Owner's Manual - Page 291

07 Wheels and tires Tire inflation Inflation placard NOTE WARNING • • The placards shown indicate inflation pressure for the tires installed on the vehicle at the factory only. A certain amount of air seepage from the tires occurs naturally and tire pressure fluctuates with seasonal changes in temperature. Always check tire pressure regularly. • Under-inflation is the most common cause of tire failure and may result in severe tire cracking, tread separation, or "blow-out," with unexpected loss of vehicle control and increased risk of injury. Under-inflated tires reduce the load carrying capacity of your vehicle. • G032521 • Use a tire gauge to check the tire inflation pressure, including the spare, at least once a month and before long trips. You are strongly urged to buy a reliable tire pressure gauge, as automatic service station gauges may be inaccurate. Tire inflation placard Tire inflation Check tire inflation pressure regularly. See the tire inflation table on page 293. A tire inflation pressure placard is also located on the driver's side B-pillar (the structural member at the side of the vehicle, at the rear of the driver's door opening). This placard indicates the designation of the factory-mounted tires on your vehicle, as well as load limits and inflation pressure. • Use the recommended cold inflation pressure for optimum tire performance and wear. When weather temperature changes occur, tire inflation pressures also change. A 10-degree temperature drop causes a corresponding drop of 1 psi (7 kPa) in inflation pressure. Check your tire pressures frequently and adjust them to the proper pressure, which can be found on the vehicle's tire information placard or certification label. • Under-inflation or over-inflation may cause uneven treadwear patterns. Checking tire pressure Cold tires Inflation pressure should be checked when the tires are cold. The tires are considered to be cold when they have the same temperature as the surrounding (ambient) air. This temperature is normally reached after the vehicle has been parked for at least 3 hours. 07 `` 291