Subaru BRZ 2017 Owner's Manual page 369

■
Tire life
Any tires over 6 years old must be checked by a qualified technician even if
they have seldom or never been used or damage is not obvious.
■
If the tread on snow tires wears down 4 mm (0.16 in.)
The effectiveness of snow tires is lost.
■
Low profile tires (vehicles with 17-inch tires)
Generally, low profile tires will wear more rapidly and tire grip performance
will be reduced on snowy and/or icy roads when compared to standard tires.
Be sure to use snow tires or tire chains on snowy and/or icy roads and drive
carefully at a speed appropriate for road and weather conditions.
■
If you press the tire pressure monitoring reset switch accidentally (if
equipped)
If initialization is performed, adjust the tire inflation pressure to the specified
level and initialize the tire pressure monitoring system again.
■ Routine tire inflation pressure checks (vehicles with a tire pressure
monitoring system)
The tire pressure monitoring system does not replace routine tire infla-
tion pressure checks. Make sure to check tire inflation pressure as part
of your routine of daily vehicle checks.
■
Wheel balance
Each wheel was correctly balanced when your vehicle was new, but the
wheels will become unbalanced as the tires become worn during use. Wheel
imbalance causes the steering wheel to vibrate slightly at certain vehicle
speeds and detracts from the vehicle's straight-line stability. It can also
cause steering and suspension system problems and abnormal tire wear. If
you suspect that the wheels are not correctly balanced, we recommend that
you have them checked and adjusted by your SUBARU dealer. Also have
them adjusted after tire repairs and after tire rotation.
NOTE:
The suspension system is designed to hold each wheel at a certain align-
ment (relative to the other wheels and to the road) for optimum straight-line
stability and cornering performance.
4-3. Do-it-yourself maintenance
4
369