Subaru Impreza WRX STI (2011)

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    Non-turbo models
    The non-turbo engine is designed to operate using unleaded gasoline with an octane rating of 87 AKI or higher. ...

    P Metric
    With the P-Metric system, Section Width is measured in millimeters. To convert millimeters into inches, divide by 25.4. The Aspect Ratio (Section Height divided by Section Width) helps provide more d ...

    Adverse safety consequences of under-inflation
    Driving at high speeds with excessively low tire pressures can cause the tires to flex severely and to rapidly become hot. A sharp increase in temperature could cause tread separation, and failure of ...