See also:

Low tire pressure warning light (U.S.-spec. models)
When the ignition switch is turned to the “ON” position, the low tire pressure warning light will illuminate for approximately 2 seconds to check that the tire pressure monitoring system (TPMS) ...

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 ...

Styling
The Impreza is athletically styled, avoiding the bulbous look that plagues some hatchbacks, including the Pontiac Vibe. One of the 2.5GT's most noticeable styling features is its hood scoop, which ...