2007 VOLVO C70 CONVERTIBLE wheel

2007 Volvo C70
The tires have wear indicator strips running across or parallel to the t\
read. 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
traction.
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 prev\
ent alteration of the driving
characteristics of the vehicle.
153 07 Wheels and tires
General information
New Tires
Remember that tires are perishable goods. As of 2000, the manufacturing \
week and year (Department of
Transportation (DOT) stamp) will be indicated with 4 digits (e.g. 15\
02 means that the tire illustrated was
manufactured during week 15 of 2002).
Tire age
Tires degrade over time, even when they are not being used. It is recomm\
ended that tires generally be
replaced after 6 years of normal service. Heat caused by hot climates, f\
requent high loading conditions or
Ultra Violet (U.V) exposure can accelerate the aging process.
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2007 Volvo C70
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 th\
e illustration above).
A tire with e.g., visible cracks or discoloration should be replaced imm\
ediately.
Improving tire economy
l Maintain correct tire pressure. See the tire pressure tables on pages 156 and 157.
l Drive smoothly: avoid fast starts, hard braking and tire screeching.
l Tire wear increases with speed.
l Correct front wheel alignment is very important.
l Unbalanced wheels impair tire economy and driving comfort.
l Tires must maintain the same direction of rotation throughout their life\
time.
l 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.
l Hitting curbs or potholes can damage the tires and/or wheels permanently\
.
154 07 Wheels and tires
Tire inflation
Tire inflation
Check tire inflation pressure regularly.
Tables listing the recommended inflation pressure for your vehicle can b\
e found on
pages 156 and 157. A
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2007 Volvo C70
Cold tires
Inflation pressure should be checked when the tires are cold.
The tires are considered to be cold when they have the same temperature \
as the surrounding
(ambient) air.
This temperature is normally reached after the car has been parked for a\
t least 3 hours.
155 07 Wheels and tires
Tire inflation
After driving a distance of approximately 1 mile (1.6 km), the tires a\
re considered to be hot. If you have
to drive farther than this distance to pump your tire(s), check and re\
cord the tire pressure first and add the
appropriate air pressure 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 pressures to increase above recommended col\
d pressures. A hot tire at or
below recommended cold inflation pressure could be significantly under-i\
nflated.
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, including the spare.
5. Visually inspect the tires to make sure there are no nails or other o\
bjects 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 irregularities.
NOTE
l If you overfill the tire, release air by pushing on the metal stem in th\
e center of the valve. Then
recheck the pressure with your tire gauge.
l Some spare tires require higher inflation pressure than the other tires.\
Consult the tire inflation tables
on
pages 156 and 157 or see the inflation pressure placard.
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2007 Volvo C70
156 07 Wheels and tires
Tire inflation
Tire inflation pressure tables - U.S. models
The following tire pressures are recommended by Volvo for your vehicle. \
Refer to the tire inflation
placard for information specific to the tires installed on your vehicle \
at the factory.
Load ratings
The 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 ratings
The speed ratings in the tables translate as follows:
M = 81 mph (130 km/h),
V= 149 mph (240 km/h),
W= 168 mph (270 km/h)
See also
page 158 for an explanation of the designations on the sidewall of the tire.
The following tire pressures are recommended by Volvo for your vehicle. \
Refer to the tire inflation
placard for information specific to the tires installed on your vehicle \
at the factory.
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2007 Volvo C70
157 07 Wheels and tires
Tire inflation
Tire inflation pressure table - Canadian models
The following tire pressures are recommended by Volvo for your vehicle. \
Refer to the tire inflation
placard for information specific to the tires installed on your vehicle \
at the factory
158 07 Wheels and tires
Tire designations
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2007 Volvo C70
Federal law mandates that tire manufacturers place standardized informat\
ion on the sidewall of all tires
(see the illustration).
The following information is listed on the tire sidewall:
The tire designation (the following figures are examples of a tire desi\
gnation):
1. 215: the width of the tire (in millimeters) from sidewall edge to sidewal\
l edge. The larger the number,
the wider the tire.
2. 65: The ratio of the tire's height to its width.
3. R: Radial tire.
4. 15: The diameter of the wheel rim (in inches).
5. 95: The tire's load index. In this example, a load index of 95 equals a ma\
ximum load of 1521 lbs (690
kg).
6. H: The tire's speed rating, or the maximum speed at which the tire is des\
igned to be driven for extended
periods of time, carrying a permissible load for the vehicle, and with c\
orrect inflation pressure. For
example, H indicates a speed rating of 130 mph (210 km/h).
NOTE
This information may not appear on the tire because it is not required b\
y
law.
7. M+S or M/S = Mud and Snow, AT = All Terrain, AS = All Season
8. U.S. DOT Tire Identification Number (TIN): This begins with the letters "DOT" and indicates that
the tire meets all federal standards. The next two numbers or letters ar\
e the plant code where it was
manufactured, the next two are the tire size code and the last four numb\
ers represent the week and year
the tire was built. For example, the numbers 317 mean the 31st week of 1\
997. After 2000 the numbers go
to four digits. For example, 2501 means the 25th week of 2001. The numbe\
rs in between are marketing
codes used at the manufacturer's discretion. This information helps a ti\
re manufacturer identify a tire for
safety recall purposes.
9. Tire Ply Composition and Material Used: Indicates the number of plies indicates or the number of
layers of rubber-coated fabric in the tire tread and sidewall. Tire manu\
facturers also must indicate the ply
materials in the tire and the sidewall, which include steel, nylon, poly\
ester, and others.
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2007 Volvo C70
10. Maximum Load: Indicates the maximum load in pounds and kilograms that can be carried\
by the tire.
Refer to the vehicle's tire information placard or the safety certificat\
ion label, located on the B-Pillar or
the driver's door or on the inside of the fuel filler door on Canadian m\
odels, for the correct tire pressure
for your vehicle.
11. Treadwear, Traction, and Temperature grades: See
page 163 for more information.
12. Maximum permissible inflation pressure: the greatest amount of air pressure that should ever be put
in the tire. This limit is set by the tire manufacturer.
159 07 Wheels and tires
Tire designations
The tire suppliers may have additional markings, notes or warnings such \
as standard load, radial tubeless,
etc.
160 07 Wheels and tires
Glossary of tire terminology
Tire terminology
l Tire information placard: A placard showing the OE (Original Equipment) tire sizes, recommende\
d
inflation pressure, and the maximum weight the vehicle can carry.
l Tire Identification Number (TIN): A number on the sidewall of each tire providing information about
the tire brand and manufacturing plant, tire size and date of manufactur\
er.
l Inflation pressure: A measure of the amount of air in a tire.
l Standard load: A class of P-metric or Metric tires designed to carry a maximum load a\
t 35 psi [37 psi
(2.5 bar) for Metric tires]. Increasing the inflation pressure beyond \
this pressure will not increase the tires
load carrying capability.
l Extra load: A class of P-metric or Metric tires designed to carry a heavier maximu\
m load at 41 psi [43
psi (2.9 bar) for Metric tires]. Increasing the inflation pressure bey\
ond this pressure will not increase the
tires load carrying capability.
l kPa: Kilopascal, a metric unit of air pressure.
l PSI: Pounds per square inch, a standard unit of air pressure.
l B-pillar: The structural member at the side of the vehicle behind the front door\
.
l Bead area of the tire: Area of the tire next to the rim.
l Sidewall of the tire: Area between the bead area and the tread.
l Tread area of the tire: Area of the perimeter of the tire that contacts the road when mounted \
on the
vehicle.
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2007 Volvo C70
l Rim: The metal support (wheel) for a tire or a tire and tube assembly upo\
n which the tire beads are
seated.
l Maximum load rating: a figure indicating the maximum load in pounds and kilograms that can \
be
carried by the tire. This rating is established by the tire manufacturer\
.
l Maximum permissible inflation pressure: the greatest amount of air pressure that should ever be put
in the tire. This limit is set by the tire manufacturer.
l Recommended tire inflation pressure: inflation pressure, established by Volvo, which is based on the
type of tires that are mounted on a vehicle at the factory. This inflati\
on pressure is affected by the number
of occupants in the car, the amount of cargo, and the speed at which the\
vehicle will be driven for a
prolonged period.
This information can be found on the tire inflation placard(s) located\
on the driver's side B-pillar or on the
inside of the fuel filler door on Canadian models, and in the tire infla\
tion table in this chapter.
l Cold tires: The tires are considered to be cold when they have the same temperatur\
e as the surrounding
(ambient) air. This temperature is normally reached after the car has \
been parked for at least 3 hours.
161 07 Wheels and tires
Vehicle loading
Vehicle loading
Properly loading your vehicle will provide maximum return of vehicle des\
ign performance.
Before loading your vehicle, familiarize yourself with the following ter\
ms for determining your vehicle's
weight ratings, with or without a trailer, from the vehicle's Federal/Ca\
nadian Motor Vehicle Safety
Standards (FMVSS/ CMVSS) label, and the vehicle's tire information pla\
card:
Curb weight
The weight of the vehicle including a full tank of fuel and all standard\
equipment. It does not include
passengers, cargo, or optional equipment.
Capacity weight
All weight added to the curb weight, including cargo and optional equipm\
ent. When towing, trailer hitch
tongue load is also part of cargo weight.
NOTE
For trailer towing information, please refer to the section "Towing a tr\
ailer" on
page
146.
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