2005 SUBARU IMPREZA tires

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Example:
(6) Load Index: A numerical code which speci-
fies the maximum load a tire can carry at the
speed indicated by its speed symbol, at maxi-
mum inflation pressure.
For example, “90” means 1,323 lbs (600 kg), “89”
means 1,278 lbs (580 kg).
Load indices apply only to the tire, not to
the vehicle. Putting a load rated tire on any
vehicle does not mean the vehicle can be
loaded up to the tire’s rated load.
(7) Speed Rating: An alphabetical system de-
scribing a tire’s capability to travel at established
and predetermined speeds.
For example, “V” means 149 mph (240 km/h)
y Speed ratings apply only to the tire, not
to the vehicle. Putting a speed rated tire on
any vehicle does not mean the vehicle can
be operated at the tire’s rated speed. y The speed rating is void if the tires are
worn out, damaged, repaired, retreaded, or
otherwise altered from their original condi-
tion. If tires are repaired, retreaded, or oth-
erwise altered, they may not be suitable for
original equipment tire designed loads and
speeds.
T Tire Identification Number (TIN)
Tire Identification Number (TIN) is marked on the
intended outboard sidewall. The TIN is com-
posed of four groups. Here is a brief review of the
TIN with a breakdown of its individual elements.
(1) Manufacturer’s Identification Mark
P 205 / 55 R 16 89 V Size designation (6) (7)
DOT XX XX XXX XXXX
(1) (2) (3)(4)

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„Recommended tire inflation pressure
T Recommended cold tire inflation pressure
Recommended cold tire inflation pressure for your vehicle’s tires is as follows,
*1: The recommended cold tire pressure for the 215/45R17 87W tire is not indicated on the vehicle plac-
ard attached to the driver’s side B-pillar since this tire is a dealer option for the WRX. If your vehicle is
equipped with 215/45R17 87W tires, be sure to adjust them to the air pressure shown on this page.
ItemRS, RS sport
package, WRXWRX (option tire) *1WRX-STi
Tire sizeP205/55R16 89V215/45R17 87W225/45R17 90W
Wheel size16
× 6 1
/2 JJ17
× 7 JJ17 × 8 JJ
PressureFront32 psi (220 kPa,
2.2 kgf/cm 2
)33 psi (230 kPa,
2.3 kgf/cm 2
)36 psi (250 kPa,
2.5 kgf/cm 2
)
Rear29 psi (200 kPa,
2.0 kgf/cm 2
)32 psi (220 kPa,
2.2 kgf/cm 2
)30 psi (210 kPa,
2.1 kgf/cm 2
)
Temporary spare
tireSizeT135/70 D16T135/70 D17
Pressure60 psi (420 kPa, 4.2 kgf/cm 2
)

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T
Vehicle placard
The vehicle placard is affixed to the driver’s side B-pillar. Example:
The vehicle placard shows original tire size, rec-
ommended cold tire inflation pressure on each
tire at maximum loaded vehicle weight, seating
capacity and loading information. T
Adverse safety consequences of under-in-
flation
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 of the tire(s). Possible resulting loss of ve-
UGD502BAMD
TIRE AND LOADING INFORMATIONSEATING CAPACITY : TOTAL 5
ORIGINAL TIRE SIZE
SEE OWNER’S MANUAL FOR
ADDITIONAL INFORMATION
COLD TIRE
INFLATION PRESSRE
COLD TIRE
INFLATION PRESSRE
FRONT
REAR220kPa,32PSI 200kPa,29PSIP205/55R16
T135/70D16
420kPa, 60PSI
COMPACT SPARE TIRE
The combined weight of occupants andcargo should never exceed 408kg or 900lbs.
FRONT 2 : REAR 3
UGD513AA

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hicle control could lead to an accident. TMeasuring and adjusting air pressure to
achieve proper inflation
Check and, if necessary, adjust the pressure of
each tire (including the spare) at least once a
month and before any long journey. Check the
tire pressures when the tires are cold. Use a
pressure gauge to adjust the tire pressures to the
specific values. Driving even a short distance
warms up the tires and increases the tire pres-
sures. Also, the tire pressures are affected by the
outside temperature. It is best to check tire pres-
sure outdoors before driving the vehicle. When a
tire becomes warm, the air inside it expands,
causing the tire pressure to increase. Be careful
not to mistakenly release air from a warm tire to
reduce its pressure. „ Glossary of tire terminology
y Cold tire pressure
The pressure in a tire that has been driven less
than 1 mile or has been standing for three hours
or more. y Maximum inflation pressure The maximum cold inflation pressure to which a
tire may be inflated. y
Recommended inflation pressure
The cold inflation pressure recommended by a
vehicle manufacturer. y Intended outboard sidewall
1)The sidewall that contains a whitewall, bears
white lettering or bears manufacturer, brand,
and/or model name molding that is higher or
deeper than the same molding on the other
sidewall of the tire, or
2)The outward facing sidewall of an asymmet-
rical tire that has a particular side that must al-
ways face outward when mounting on a vehi- cle.
y Accessory weight
The combined weight (in excess of those stan-
dard items which may be replaced) of floor mats,
leather seats and cross bars to the extent that
these items are available as factory-installed
equipment (whether installed or not). y Curb weight
The weight of a motor vehicle with standard
equipment including the maximum capacity of fu-
el, oil, and coolant and air conditioning.

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y
Maximum loaded vehicle weight
The sum of curb weight, accessory weight, vehi-
cle capacity weight and production optionsweight. y Normal occupant weight
150 lbs (68 kg) times the number of occupants (3 occupants). y Occupant distribution
Distribution of occupants in a vehicle, 2 in front,
1 in rear seat. y Production options weight
The combined weight of those installed regular
production options weighing over 5.1 lbs (2.3 kg)
in excess of those standards items which they
replace, not previously considered in curb weight
or accessory weight. y Vehicle capacity weight
The total weight of cargo, luggage and occu-
pants that can be added to the vehicle. y Vehicle maximum load on a tire
Load on an individual tire that is determined by
distributing to each axle its share of the maxi-
mum loaded vehicle weight and dividing by two. y Vehicle normal load on a tire
Load on an individual tire that is determined by distributing to each axle its share of the curb
weight, accessory weight, and normal occupant
weight and dividing by two. „
Tire care – maintenance and safety practices
y Check on a daily basis that the tires are free
from serious damage, nails, and stones. At the
same time, check the tires for abnormal wear. y Inspect the tire tread regularly and replace the
tires before their tread wear indicators become
visible. When a tire’s tread wear indicator be-
comes visible, the tire is worn beyond the ac-
ceptable limit and must be replaced immediately.
With a tire in this condition, driving at even low
speeds in wet weather can cause the vehicle to
hydroplane. Possible resulting loss of vehicle
control can lead to an accident. y To maximize the life of each tire and ensure
that the tires wear uniformly, it is best to rotate
the tires every 7,500 miles (12,500 km). Rotating
the tires involves switching the front and rear
tires on the right hand side of the vehicle and
similarly switching the front and rear tires on the

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left hand side of the vehicle. (Each tire must be
kept on its original side of the vehicle.) Replace
any damaged or unevenly worn tire at the time of
rotation. After tire rotation, adjust the tire pres-
sures and make sure the wheel nuts are correct-
ly tightened. A tightening torque specification
and a tightening sequence specification for the
wheel nuts can be found “Flat tires” in Chapter 9. „Vehicle load limit – how to determine
The load capacity of your vehicle is determined
by weight, not by available cargo space. The
load limit of your vehicle is shown on the vehicle
placard attached to the driver’s side B-pillar. Lo-
cate the statement “The combined weight of oc-
cupants and cargo should never exceed XXX kg
or XXX lbs” on your vehicle’s placard.
The vehicle placard also shows seating capacity
of your vehicle.
The total load capacity includes the total weight
of driver and all passengers and their belong-
ings, any cargo, any optional equipment such as
a trailer hitch, roof rack or bike carrier, etc., and
the tongue load of a trailer. Therefore cargo ca- pacity can be calculated by the following method.
Cargo capacity = Load limit – (total weight of oc-
cupants + total weight of optional equipment +
tongue load of a trailer (if applicable))
For towing capacity information and weight lim-
its, refer to “Trailer towing” in Chapter 8. T
Calculating total and load capacities vary-
ing seating configurations
Calculate the available load capacity as shown in
the following examples:
Example 1A
UGD504BA

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2. Calculate the available load capacity.
3. The total weight now exceeds the capacity
weight by 32 lbs (15 kg), so the cargo weight
must be reduced by 32 lbs (15 kg) or more. „
Determining compatibility of tire and
vehicle load capacities
The sum of four tires’ maximum load ratings
must exceed the maximum loaded vehicle
weight (“GVWR”). In addition, sum of the maxi-
mum load ratings of two front tires and of two
rear tires must exceed each axle’s maximum
loaded capacity (“GAWR”). Original equipment
tires are designed to fulfill those conditions.
The maximum loaded vehicle weight is referred
to Gross Vehicle Weight Rating (GVWR). And
each axle’s maximum loaded capacity is referred
to Gross Axle Weight Rating (GAWR). The
GVWR and each axle’s GAWR are shown on the
vehicle certification label affixed to the driver’s
door.
The GVWR and front and rear GAWRs are de-
termined by not only the maximum load rating of
tires but also loaded capacities of the vehicle’s
suspension, axles and other body parts.
Therefore, this means that the vehicle cannot
necessarily be loaded up to the tire’s maximum
load rating on the tire sidewall.
Total weight = 165 lbs (75 kg) + 143 lbs (65 kg) + 40 lbs (18 kg)
+ 11 lbs (5 kg) + 375 lbs (170 kg) + 22 lbs (10 kg) + 176 lbs (80 kg) = 932 lbs (423 kg) (Occupant)
(Cargo)
(Trailer hitch)
(Child restraint)
(Tongue load)
Available Load Capacity
= 900 lbs (408 kg) – 932 lbs (423 kg) = –32 lbs (–15 kg) (Vehicle
capacity weight) (Total weight)

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„
Adverse safety consequences of over-
loading on handling and stopping and on tires
Overloading could affect vehicle handling, stop-
ping distance, vehicle and tire as shown below.
This could lead to an accident and possibly result
in severe personal injury. y Vehicle stability will deteriorate.
y Heavy and/or high-mounted loads could in-
crease the risk of rollover.y Stopping distance will increase.
y Brakes could overheat and fail.
y Suspension, bearings, axles and other body
parts could break or experience accelerated
wear that will shorten vehicle life. y Tires could fail.
y Tread separation could occur.
y Tire could separate from its rim.
„ Steps for Determining Correct Load
Limit
1. Locate the statement “The combined weight
of occupants and cargo should never exceed
XXX pounds” on your vehicle’s placard. 2. Determine the combined weight of the driver
and passengers that will be riding in your vehicle.
3. Subtract the combined weight of the driver
and passengers from XXX kilograms or XXX
pounds.
4. The resulting figure equals the available
amount of cargo and luggage load capacity. For
example, if the “XXX” amount equals 1,400 lbs
(635 kg) and there will be five- 150 lbs (68 kg)
passengers in your vehicle, the amount of avail-
able cargo and luggage load capacity is 650 lbs.
(1,400 – 750 (5 x 150) = 650 lbs.)
5. Determine the combined weight of luggage
and cargo being loaded on the vehicle. That
weight may not safely exceed the available car-
go and luggage load capacity calculated in Step 4.
6. If your vehicle will be towing a trailer, load
from your trailer will be transferred to your vehi-
cle. Consult this manual to determine how this
reduces the available cargo and luggage load
capacity of your vehicle.