2009 VOLVO C30 tires

06 Starting and drivingTransporting loads
06156
Loading the vehicleYour vehicle's load-carrying capacity is affec-
ted by factors such as:•
the number of passengers
•
tire inflation
•
the amount of optional or accessory equip-
ment installed
•
the amount of cargo.
See the chapter "Wheels and tires" for more
detailed information.
Before loading the car, turn off the engine, and
apply the parking brake when loading or
unloading long objects. The gear selector can
be inadvertently knocked out of position by
long cargo, causing the car to move.
Keep the following in mind when
loading the vehicle:•
Load objects in the cargo area against the
rear seat backrest.
•
Load heavy cargo as low as possible.
•
Center wide loads.
•
Secure all cargo with restraining straps
anchored to the load securing eyelets.
•
Cover sharp edges on the load.
•
The rear seats can be folded down to
extend the cargo compartment, see
page 111.
WARNING
•
Remember that an object weighing
44 lbs (20 kg) produces a force of
2,200 lbs (1,000 kg) in a head-on colli-
sion at 30 mph (50 km/h)!
•
When the rear backrest(s) are folded
down, the vehicle should not be loaded
to a level higher than 2 in. (5 cm) below
the upper edge of the rear side win-
dows. Objects placed higher than this
level could impede the function of the
Volvo Inflatable Curtain.
Load carriers (accessory)Load carriers are available as Volvo accesso-
ries. Follow the installation instructions sup-
plied with the load carriers.
Observe the following points when using load
carriers:•
To avoid damaging your car and to achieve
maximum safety when driving, we recom-
mend using the load carriers that Volvo has
developed especially for your car.
•
Volvo-approved removable roof racks are
designed to carry the maximum allowable
roof load for this vehicle: 165 lbs (75 kg).
For Non-Volvo roof racks, check the man-
ufacturer's weight limits for the rack.
•
Never exceed the rack manufacturer's
weigh limits and never exceed the maxi-
mum rated roof load of 165 lbs (75 kg).
•
Avoid single-point loads. Distribute loads
evenly.
•
Place heavier cargo at the bottom of the
load.
•
Secure the cargo correctly with appropri-
ate tie-down equipment.
•
Check periodically that the load carriers
and load are properly secured.
•
Remember that the car's center of gravity
and handling change when you carry a
load on the roof.
•
The car's wind resistance and fuel con-
sumption will increase with the size of the
load.
•
Drive smoothly. Avoid rapid starts, fast
cornering and hard braking.

06 Starting and drivingPark assist (Option/accessory)
06162
Activating/deactivating park assist
G021267
Park Assist button (lright button in the illustration)The system is activated automatically when the
vehicle is started.•
Press the Park assist button on the center
console to temporarily deactivate the sys-
tem(s). The indicator light in the button will
go out when the system has been deacti-
vated.
•
Park assist will be automatically reactiva-
ted the next time the engine is started, or if
the button is pressed (the indicator light in
the button will illuminate).
NOTE
•
Front park assist is disengaged auto-
matically when the parking brake is
applied.
•
If the vehicle is equipped with front and
rear park assist, both systems will be
deactivated by pressing the button.
Audible signals from the park assist
systemThe Park Assist system uses an intermittent
tone that pulses faster as you come close to an
object, and becomes constant when you are
within approximately 1 ft (30 cm) of an object
in front of or behind the vehicle. If the volume
of another source from the audio system is
high, this will be automatically lowered.
If there are objects within this distance both
behind and in front of the vehicle, the signal
alternates between front and rear speakers.
Faults in the system
If the information symbol illumi-
nates and
PARK ASSIST
SERVICE REQUIRED
is shown
on the information display, this
indicates that the system is not
functioning properly and has been disengaged.
Consult a Volvo retailer or authorized Volvo
service technician.
CAUTION
In certain circumstances, the park assist
system may give unexpected warning sig-
nals that can be caused by external sound
sources that use the same ultrasound fre-
quencies as the system. This may include
such things as the horns of other vehicles,
wet tires on asphalt, pneumatic brakes,
motorcycle exhaust pipes, etc. This does
not indicate a fault in the system.

G020918
164
General information............................................................................... 166
Tire inflation........................................................................................... 168
Inflation pressure—U.S. models .......................................................... 170
Inflation pressure—Canadian models .................................................. 171
Tire designations................................................................................... 172
Glossary of tire terminology.................................................................. 174
Vehicle loading...................................................................................... 175
Uniform tire quality gradings................................................................. 176
Snow chains, snow tires, studded tires................................................ 177
Temporary spare................................................................................... 178
Wheel nuts............................................................................................ 179
Tire rotation........................................................................................... 180
Changing a wheel................................................................................. 181
Tire Sealing System ............................................................................. 183
Tire Pressure Monitoring System (TPMS).............................................188

07
WHEELS AND TIRES

07 Wheels and tiresGeneral information
07166
Your vehicle is equipped with tires according
to the vehicle's tire information placard on the
B-pillar (the structural member at the side of
the vehicle, at the rear of the driver's door
opening), or on the inside of the fuel filler door
on Canadian models.
CAUTION
Some Volvo models are equipped with an
Ultra High Performance tire and wheel com-
bination designed to provide maximum dry
pavement performance with consideration
for hydroplaning resistance. As such, they
may be more susceptible to road hazard
damage and, depending on driving condi-
tions, may achieve a tread life of less than
20,000 miles (30,000 km). Even if this vehi-
cle is equipped with Volvo’s advanced AWD
or DSTC system, these tires are not
designed for winter driving, and should be
replaced with winter tires when weather
conditions dictate.The tires have good road holding characteris-
tics and offer good handling on dry and wet
surfaces. It should be noted however that the
tires have been developed to give these fea-
tures on snow/ice-free surfaces.
Certain models are equipped with "all-season"
tires, which provide a somewhat higher degree
of road holding on slippery surfaces than tires
without the "all-season" rating. However, foroptimum road holding on icy or snow-covered
roads, we recommend suitable winter tires on
all four wheels.
When replacing tires, be sure that the new tires
are the same size designation, type (radial) and
preferably from the same manufacturer, on all
four wheels. Otherwise there is a risk of altering
the car's roadholding and handling characte-
ristics.
Storing wheels and tiresWhen storing complete wheels (tires mounted
on rims), they should be suspended off the
floor or placed on their sides on the floor.
Tires not mounted on rims should be stored on
their sides or standing upright, but should not
be suspended.
CAUTION
Tires should preferably be stored in a cool,
dry, dark place, and should never be stored
in close proximity to solvents, gasoline, oils,
etc.
WARNING
•
The wheel and tire sizes for your Volvo
are specified to meet stringent stability
and handling requirements. Unap-
proved wheel/tire size combinations
can negatively affect your vehicle's sta-
bility and handling. Approved tire sizes
are shown in the Tire inflation pressure
tables, see page 170.
•
Any damage caused by installation of
unapproved wheel/tire size combina-
tions will not be covered by your new
vehicle warranty. Volvo assumes no
responsibility for death, injury, or
expenses that may result from such
installations.

07 Wheels and tires
General information
07
167 Tread wear indicator
G020323
The tires have wear indicator strips running
across or parallel to the tread. The letters TWI
are printed on the side of the tire. When
approximately 1/16" (1.6 mm) is left on the
tread, these strips become visible and indicate
that the tire should be replaced. Tires with less
than 1/16" (1.6 mm) tread offer very poor trac-
tion.
When replacing worn tires, it is recommended
that the tire be identical in type (radial) and size
as the one being replaced. Using a tire of the
same make (manufacturer) will prevent altera-
tion of the driving characteristics of the vehicle.
New Tires
Remember that tires are per-
ishable goods. As of 2000, the
manufacturing week and year
(Department of Transporta-
tion (DOT) stamp) will be indi-
cated with 4 digits (e.g. 1502
means that the tire illustrated
was manufactured during week 15 of 2002).
Tire ageTires degrade over time, even when they are
not being used. It is recommended that tires
generally be replaced after 6 years of normal
service. Heat caused by hot climates, frequent
high loading conditions or Ultra Violet (U.V)
exposure can accelerate the aging process.
You should replace the spare tire when you
replace the other road tires due to the aging of
the spare.
A tire's age can be determined by the DOT
stamp on the sidewall (see the illustration).
A tire with e.g., visible cracks or discoloration
should be replaced immediately.Improving tire economy•
Maintain correct tire pressure. For the tire
pressure tables, see page 170.
•
Drive smoothly: avoid fast starts, hard
braking and tire screeching.
•
Tire wear increases with speed.
•
Correct front wheel alignment is very
important.
•
Unbalanced wheels impair tire economy
and driving comfort.
•
Tires must maintain the same direction of
rotation throughout their lifetime.
•
When replacing tires, the tires with the
most tread should be mounted on the rear
wheels to reduce the chance of oversteer
during hard braking.
•
Hitting curbs or potholes can damage the
tires and/or wheels permanently.

07 Wheels and tiresTire inflation
07168
Inflation labels
G032513
Tire inflation placard on U.S. modelsCheck tire inflation pressure regularly.
Tables listing the recommended inflation pres-
sure for your vehicle can be found on page
170. A tire inflation pressure placard is also
located on the driver's side B-pillar (the struc-
tural member at the side of the vehicle, at the
rear of the driver's door opening). This placard
indicates the designation of the factory-moun-
ted tires on your vehicle, as well as load limits
and inflation pressure.
G032520
Tire inflation placard on Canadian models
NOTE
The placards shown indicate inflation pres-
sure for the tires installed on the car at the
factory only.Use a tire gauge to check the tire inflation pres-
sure, including the spare, at least once a month
and before long trips. You are strongly urged
to buy a reliable tire pressure gauge, as auto-
matic service station gauges may be inaccu-
rate.
Use the recommended cold inflation pressure
for optimum tire performance and wear.Under-inflation or over-inflation may cause
uneven treadwear patterns.
WARNING
•
Under-inflation is the most common
cause of tire failure and may result in
severe tire cracking, tread separation,
or "blowout," with unexpected loss of
vehicle control and increased risk of
injury.
•
Under-inflated tires reduce the load car-
rying capacity of your vehicle.
When weather temperature changes occur, tire
inflation pressures also change. A 10-degree
temperature drop causes a corresponding
drop of 1 psi (7 kPa) in inflation pressure. Check
your tire pressures frequently and adjust them
to the proper pressure, which can be found on
the vehicle's tire information placard or certifi-
cation label.

07 Wheels and tires
Tire inflation
07
169 Checking tire pressure
Cold tiresInflation pressure should be checked when the
tires are cold.
The tires are considered to be cold when
they have the same temperature as the sur-
rounding (ambient) air.
This temperature is normally reached after the
car has been parked for at least 3 hours.
After driving a distance of approximately 1 mile
(1.6 km), the tires are considered to be hot. If
you have to drive farther than this distance to
pump your tire(s), check and record the tire
pressure first and add the appropriate air pres-
sure when you get to the pump.
If checking tire pressure when the tire is hot,
never "bleed" or reduce air pressure. The tires
are hot from driving and it is normal for pres-
sures to increase above recommended cold
pressures. A hot tire at or below recommended
cold inflation pressure could be significantly
under-inflated.To check inflation pressure:1. Remove the cap from the valve on one tire,
then firmly press the tire gauge onto the
valve.2. Add air to reach the recommended air
pressure
3. Replace the valve cap.
4. Repeat this procedure for each tire, includ-
ing the spare.
5. Visually inspect the tires to make sure there
are no nails or other objects embedded
that could puncture the tire and cause an
air leak.
6. Check the sidewalls to make sure there are
no gouges, cuts, bulges or other irregular-
ities.
NOTE
•
If you overfill the tire, release air by
pushing on the metal stem in the center
of the valve. Then recheck the pressure
with your tire gauge.
•
Some spare tires require higher inflation
pressure than the other tires. Consult
the tire inflation tables, see page 170,
or see the inflation pressure placard.
Load ratingsThe load ratings in the tables above translate
as follows:
91 = 1365 lbs (615 kg), 93 = 1433 lbs (650 kg),
99 = 1709 lbs (755 kg)
Speed ratingsThe speed ratings in the tables translate as fol-
lows:
M = 81 mph (130 km/h), V= 149 mph (240 km/
h), W= 168 mph (270 km/h)
See also page 172 for an explanation of the
designations on the sidewall of the tire.