Subaru WRX & WRX STI Manuals 2018 WRX & WRX STI Owner’s Manual | Page 499

Maintenance and service/Tires and wheels
NOTE
. The air pressure in a tire increases
by approximately 4.3 psi (30 kPa, 0.3
kgf/cm 2 ) when the tire becomes warm.
. The tires are considered cold when
you have parked the vehicle for at least
three hours or have driven less than
one mile (1.6 km).
11-33
. Correct tire pressure (tread worn
evenly) . Under inflated tire (tread worn on
shoulders)
Roadholding is good, and steering is
responsive. Rolling resistance is low, so
fuel consumption is also lower. Rolling resistance is high, so fuel con-
sumption is also higher.
WARNING
Do not let air out of warm tires to
adjust pressure. Doing so will result
in low tire pressure.
Incorrect tire pressures detract from con-
trollability and ride comfort, and they
cause the tires to wear abnormally.
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