2003 Hyundai Sonata Owner's Manual - Page 191

CONSUMER INFORMATION & REPORTING SAFETY DEFECTS 8- 3 These pressures were chosen to provide the most satisfactory combination of ride comfort, tire wear and stability under normal conditions. Tire pressures should be checked at least monthly. Proper tire inflation pressures should be maintained for these reasons: o Lower-than-recommended tire pressures cause uneven tread wear and poor handling. o Higher-than-recommended tire pressures increase the chance of damage from impacts and cause uneven tread wear. I040A01S-AAT I060A02A-AAT SNOW TIRES If you equip your car with snow tires, they should be the same size and have the same load capacity as the original tires. Snow tires should be installed on all four wheels; otherwise, poor handling may result. Snow tires should carry 4 psi (28 kPa) more air pressure than the pressure recommended for the standard tires on the tire label on the driver's door edge , or up to the maximum pressure shown on the tire sidewall whichever is less. Do not drive faster than 75 mph (120 km/h) when your car is equipped with snow tires. TIRE ROTATION ! CAUTION: I050A02Y-AAT Always observe the following: o Check pressures when the tires are cold. That is, after the car has been parked for at least three hours and hasn't been driven more than one mile or 1.6 km since starting up. o Check the pressure of your spare tire each time you check the pressure of other tires. o Never overload your car. Be especially careful about overloading if you equip your car with a luggage rack or car top carrier. HEF-241 TIRE CHAINS Tire chains, if necessary, should be installed on the front wheels. Be sure that the chains are the proper size and that they are installed in accordance with the manufacturer's instructions. To minimize tire and chain wear, do not continue to use tire chains when they are no longer needed. Tires should be rotated every 7,500 miles (12,000 km). If you notice that tires are wearing unevenly between rotations, have the car checked by a Hyundai dealer so the cause may be corrected. After rotating, adjust the tire pressures and be sure to check the wheel nut tightness. ! WARNING: ! WARNING: When driving on roads covered with snow or ice, drive at less than 20 mph (30 km/h). o Do not use the temporary spare tire for tire rotation. o Do not mix bias ply and radial ply tires under any circumstances. This may cause unusual handling characteristics that could result in death, serious injury, or property damage.