winter tires TOYOTA YARIS HATCHBACK 2009 Owners Manual

161
2-5. Driving information
2
When driving
Winter driving tips
Carry out the necessary preparations and inspections before driving
the vehicle in winter. Always drive the vehicle in a manner appropri
-
ate to the prevailing weather conditions.
n Pre-winter preparations
lUse
fluids that are appropriate to the prevailing outside tem -
peratures.
• Engine oil
• Engine coolant
• Washer fluid
l Have a se
rvice technician inspect the level and specific grav -
ity of battery electrolyte.
l Have the veh
icle fitted with four snow tires or purchase a set
of tire chains for the front tires.
Ensure that all tires are the same size and brand, and that chains
match the size of the tires.
n Before driving the vehicle
Perform the following according to the driving conditions.
lDo
not try to forcibly open a window, scrape an outside rear
view mirror surface or move a wiper or outside rear view mir -
ror that is frozen. Pour warm water over the frozen area to
me
lt the ice. Wipe away the water immediately to prevent it
from freezing.
l T
o ensure proper operation of th e climate control system fan,
remove any snow that has accumulated on the air inlet vents
in front of the windshield.
l Remove a
ny ice that has accumu lated on the vehicle chassis.
l Pe
riodically check for and remove any excess ice or snow
that may have accumulated in the wheel well or on the
brakes.

260 4-3. Do-it-yourself maintenance
nIf the tread wears down below 0.16 in. (4 mm) on snow tires
The effectiveness of snow tires is lost.
nMaximum load of tire
Check that the maximum load of the replaced tire is greater than 1/2 of
the Gross Axle Weight Ratings (GAWR) of either the front axle or the
rear axle, whichever is greater.
As for the maximum load of the tire, see the load limit at maximum cold
tire inflation pressure mentioned on the sidewall of the tire, and as for the
Gross Axle Weight Ratings (GAWR) , see the Certification Label. (→P.
264, 356).
nTire types
1 Summer tires
Summer tires are high-speed performance tires best suited to highway
driving under dry conditions. Since summer tires do not have the same
traction performance as snow tire s, summer tires are inadequate for
driving on snow-covered or icy roads. For driving on snow-covered
roads or icy roads, the use of snow tires is recommended. When
installing snow tires, be sure to replace all four tires.
2 All season tires
All season tires are designed to provide better traction in snow and to
be adequate for driving in most winter conditions, as well as for use
year round. All season tires, however, do not have adequate traction
performance compared with snow tires in heavy or loose snow. Also,
all season tires fall short in acceleration and handling performance
compared with summer tires in highway driving.
3Snow tires For driving on snow-covered roads or icy roads, we recommend using
snow tires. If you need snow tires, select tires of the same size, con-
struction and load capacity as the or iginally installed tires. Since your
vehicle has radial tires as original equipment, make sure your snow
tires also have radial construction. Do not install studded tires without
first checking local regulations for possible restriction. Snow tires
should be installed on all wheels. ( →P. 161)

262 4-3. Do-it-yourself maintenance
CAUTION
nTire pressure warning system operation
The tire pressure warning system may not provide warning immediately
if a tire bursts or if sudden air leakage occurs.
nWhen inspecting or replacing tires
Observe the following precautions to prevent accidents. Failure to do so
may cause damage to parts of the drive train, as well as dangerous han-
dling characteristics, which may le ad to fatal or injury accidents.
lDo not mix tires of different makes, models, tread patterns or tread-
wear.
lDo not use tire sizes other than those recommended by Toyota.
lDo not mix radial, bias-belted, or bias-ply tires.
lDo not mix summer, all season and winter tires.
lDo not use tires that have been used on another vehicle.
lDo not use tires if you do not know how they were used previously.