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) ...

Glossary of tire terminology
● Accessory weight The combined weight (in excess of those standard items which may be replaced) of automatic transmission, power steering, power brakes, power windows, power seats, radio, ...

SAFETY
Although the STi wasn't designed as a family car, all of the family-centric safety features on the Impreza sedan are in it. The STi has four-wheel-disc antilock brakes with brake assist, stability ...