For proper maintenance, safety, and maximum fuel economy, you must always maintain recommended tire inflation pressures and stay within the load limits and weight distribution recommended for your vehicle.
Tires and wheels
Recommended cold tire inflation
pressuresKia Cee'd JD Service Manual: CVVT & Camshaft Description and operation
Description
Continuous Variable Valve Timing (CVVT) system advances or retards the valve
timing of the intake and exhaust valve in accordance with the ECM control signal
which is calculated by the engine speed and load.
By controlling CVVT, the valve over-lap or under-lap ...
Kia Cee'd JD Service Manual: Tire Repair procedures
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Using tires and wheel other than the recommended sizes could
cause unusual handling characteristics and poor vehicle control,
resulting in a serious accident.
...