VOLVO S70 1999 Owner's Manual

Incorrect spark plug gap
Dirty air cleaner
Dirty engine oil and clogged oil filter
Dragging brakes
Incorrect front end alignment
Some of the above mentioned items and others are checked at the standard Maintenance Service intervals.
NOTE: ( D )rive or 5th gear (manual transmissions) should be used as often as possible to help improve fuel economy.

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Chapter 5 - Wheels and tires
pg. 85 Wheels and tires
Wheels and tires
The handling and riding comfort of the vehicle is dependent on the inflation pressure and the type of tires fitted. Read
the following pages carefully. Page No.
Subject
pg. 86General information, Wear indicator, Tire economy, Flat spots
pg. 87
Snow chains, Winter tires
pg. 88
Inflation pressure
pg. 89
Uniform tire quality grading
pg. 86 Wheels and tires
General information
Your vehicle is equipped with tires according to the tire information label located on the rear facing side of the right
front door.
The following is an example of a tire designation code 195/60R15:
195 = tire width in mm.
60 = tire profile. This is the relationship (in percent) between the section height and the width of the tire.
R = radial tires.
15 = diameter in inches.
The tires have good road holding characteristics and offer good handling on dry and wet surfaces. It should be noted
however that the tires have been developed to give these features on snow/ice-free surfaces. Certain models are
equipped with "all-season" tires, which provide a somewhat higher degree of winter roadholding on slippery surfaces
than tires without the "all-season" rating. However, for optimum 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 road-holding and handling characteristics .
NOTE: When storing wheel/tire assemblies (e.g. winter tires and wheels), either stand the assemblies upright or
suspend them off the ground. Laying wheel/tire assemblies on their sides for prolonged periods can cause wheel and/or
tire damage.
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Wear indicator
The tires have a so-called "wear indicator" in the form of a number of narrow strips running across or parallel to the
tread. When approx. 1/16" (1.6 mm) is left on the tread, these strips show up and indicate that the tire should be
replaced.
Tires with less than 1/16" (1.6 mm) tread have a very poor grip in rain or snow.
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 alteration of the driving characteristics of the
vehicle.
To improve tire economy:
Maintain correct tire pressure. See the tire pressure label on the inside of the fuel tank cover.
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.
If the wheels are rotated, they should be kept on the same side of the car so that they revolve in the same direction
as prior to rotation.
Hitting curbs or potholes can damage the tires and/or wheels permanently.
Flat spots
All tires become warm during use. After cooling, when the vehicle is parked, the tires have a tendency to distort
slightly, forming flat spots. These flat spots can cause vibrations similar to the vibrations caused by unbalanced wheels.
They do, however, disappear when the tire warms up. The degree to which the flat spots form depends on the type of
cord used in the tire. Remember that, in cold weather, it takes longer for the tire to warm up and consequently longer
for the flat spot to disappear. CAUTION: The car must not be driven with wheels of different dimensions or with a spare tire other than the one
that came with the car. The use of different size wheels can seriously damage your car's transmission. *
* This also applies to models equipped with All Wheel Drive (AWD). pg. 87 Wheels and tires (cont.)
Snow chains
Snow tire chains can be used on your Volvo with the following restrictions:
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Snow chains should be installed on front wheels only (this applies to cars with front wheel drive and to cars
equipped with All Wheel Drive) . Use only Volvo approved snow chains.
Snow chains may be mounted on tire dimension
Front wheel drive: 185/65R15 and 195/60R15. Tire dimension 205/55R15 and 205/50R16 require a special type of
snow chain.
Chains cannot be used on front wheel drive models equipped with 205/55R16 tires.
All Wheel Drive: Special snow chains are available for AWD models equipped with 195/65R15 and 205/55R16 tires.
Chains cannot be used on V70 XC AWD models equipped with 205/65R15 tires. Consult your Volvo retailer.
If accessory, aftermarket or "custom" tires and wheels are installed and are of a size different than the original
tires and wheels, chains in some cases CANNOT be used. Snow chains cannot be used on those turbo-charged
models fitted with all-season tires 205/55 R16. Models equipped with 205/55 R15 or 205/50 R16 need specially
designed snow chains. Sufficient clearances between chains and brakes, suspension and body components must
be maintained.
Some strap-on type chains will interfere with brake components and therefore CANNOT be used.
Consult your Volvo retailer for additional snow chain information. CAUTION:
Check local regulations regarding the use of snow chains before installing.
Always follow the chains manufacturer's installation instructions carefully. Install chains as tightly as possible and
re-tighten periodically.
Never exceed the chain manufacture's specified maximum speed limit. (Under no circumstances should that limit
be higher than 30 mph (45 km/h).
Avoid bumps, holes or sharp turns when driving with snow chains.
The handling of the vehicle can be adversely affected when driving with chains. Avoid fast or sharp turns as well
as locked wheel braking.
Snow tires, studded tires *
Tires for winter use:
Owners who live in or regularly commute through areas with sustained periods of snow or icy driving
conditions are strongly advised to fit suitable winter tires to help retain the highest degree of traction.
It is important to install winter tires on all four wheels to help retain traction during cornering, braking and
accelerating. Failure to do so could reduce traction to an unsafe level or adversely affect handling. Do not mix tires of
different design as this could also negatively affect overall tire road grip. Volvo recommends 185/65 R15 winter tires
on 15" wheels on all front wheel drive S/V 70 models** including models equipped with 16" or 17" wheels.
Winter tires wear more quickly on dry roads in warm weather. They should be removed when the winter driving
season has ended.
Studded tires should be run-in 300-600 miles (500-1000 km) during which the car should be driven as smoothly as
possible to give the studs the opportunity to seat properly in the tires. The car tires should have the same rotational
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direction throughout theirentire lifetime. In other words, if you wish to rotate the wheels, make sure that the same
wheels are always on the same side of the car.
NOTE: Please consult state or provincial regulations restricting the use of studded winter tires before installing such
tires.
* Where permitted
** All Wheel Drive models, including the AWD XC should be equipped with 195/65 R15 winter tirespg. 88 Wheels and tires (cont.)
Checking and correcting tire pressure
Check the tire pressure when refueling.
The tire pressure should be corrected only when the tires are cold.
With warm tires, correct only when the pressure is too low. The tire temperature rises after driving just a few miles.
Vehicle Loading
The tires on your Volvo will perform to specifications at all normal loads when inflated as recommended on the tire
information label* located on the inside of the fuel filler flap. This label lists both the tire and vehicle design limits.
Do not load your car beyond the load limits indicated.
* Please note that the tire information label indicates pressures for both comfort and fuel economy.

Tire pressure label
pg. 89 Wheels and tires (cont.)
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Uniform tire quality grading
ALL PASSENGER CAR TIRES MUST CONFORM TO FEDERAL SAFETY REQUIREMENTS IN ADDITION TO
THESE GRADES
TREADWEAR
The treadwear grade is a comparative rating based on the wear rate of the tire when tested under controlled conditions
on a specified government test course. For example, a tire graded at 150 would wear one and one half (1 1/2) times as
well on the government course as a tire graded 100. The relative performance of tires depends upon the actual
conditions of their use, however, and many depart significantly from the norm due to variation in driving habits,
service practices and differences in road characteristics and climate.
TRACTION
The traction grades, from highest to lowest, are AA, A, B, and C, as measured under controlled conditions on specified
government test surfaces of asphalt and concrete. A tire marked C may have poor traction performance.WARNING! The traction grade assigned to this tire is based on braking (straight-ahead) traction tests and does not
include cornering (turning) traction.
TEMPERATURE
The temperature grades are AA (the highest), A, B, and C, representing the tire's resistance to the generation of heat
and its ability to dissipate heat when tested under controlled conditions on a specified indoor laboratory test wheel.
Sustained high temperature can cause the material of the tire to degenerate and reduce tire life, and excessive
temperature can lead to sudden tire failure. The grade C corresponds to a level of performance which all passenger car
tires must meet under the Federal Motor Safety Standard No. 109. Grades B and A represent higher levels of
performance on the laboratory test wheel than the minimum required by law. WARNING! The temperature grade for this tire is established for a tire that is properly inflated and not overloaded.
Excessive speed, underinflation, or excessive loading, either separately or in combination, can cause heat buildup and
possible tire failure.

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Chapter 6 - In case of emergency
pg. 91 In case of an emergency
In case of an emergency
Even if you maintain your car in good running condition, there is always the possibility that something might go wrong
and prevent you from driving, such as a punctured tire, blown fuse or bulb, etc. For additional information, see section
"ON CALL Road Assistance". pg. 92-93
Wheel changing
pg. 94
Spare tire
pg. 95-101
Replacing bulbs
pg. 102-104
Replacing fuses
pg. 105
Installation of accessories
pg. 106-107
Replacing wiper blades
pg. 108
In case of emergency
pg. 92 Wheel changing
Loosen wheel boltsInsert flat end of lug wrench and turn
Pull straight out
Changing a wheel
The spare wheel is located under the carpet on the trunk floor. The jack and crank are secured in the wheel recess.
Engage the parking brake.
Put the gear selector in (P)ark (automatic) or in Reverse (manual).
Remove the wheel cap (where applicable) using the lug wrench in the tool kit.
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With the car still on the ground, use the lug wrench to loosen the wheel bolts 1/2 - 1 turn. Turn the bolts
counterclockwise to loosen.
Fold out the crank handle on the jack by pressing the nob on the handle downward. To attach the jack, refer to the
illustration on the following page.
NOTE: To avoid excessive wear and the necessity of rebalancing, mark and reinstall wheels in same location and
position as before removal. To lessen the chance of imbalance, each wheel hub is equipped with a guide stud to ensure
that a removed wheel can be reinstalled in its original position (as when changing over to winter tires/wheels).
CAUTION:
The car must not be driven with wheels of different dimensions or with a spare tire other than the one that came
with the car. The use of different size wheels can seriously damage your car's transmission.
Correct tightening torque on wheel bolts must be observed. The wheel bolts must be observed. The wheel bolts
should never be greased or lubricated. The extended, chromed wheel bolts must not be used with steel rims, as they
make it impossible to fit the hub caps.
WARNING!
The jack (see the following page) must engage the bar in the jack attachment (A). The car's weight must not rest on
the jack's attachment (B).
Be sure the jack is on a firm, level, non-slippery surface.
Never allow any part of your body to be extended under a car supported by a jack.
Use the jack intended for the car when replacing a wheel. For any other job, use stands to support the end of the
car being worked on.
Apply the parking brake, select position P (automatic transmission) or Reverse gear (manual transmission).
Block the wheels standing on the ground, use rigid wooden blocks or large stones.
The jack should be kept well-greased.
pg. 93 Wheel changing (cont.)
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Jack attachment - front wheel drive models
Attaching the jack
There is a jack attachment located in the center on each side of the car. Position the jack on the bar in the attachment
(A in illustration above) and crank while simultaneously guiding the base of the jack to the ground. The base of the
jack must be flat on a level, firm, non-slippery surface. Before raising the car check that the jack is still correctly
positioned in the attachment .Raise the vehicle until both wheels on the side of the car where the jack is attached are
lifted off the ground. Unscrew the wheel bolts completely and carefully remove the wheel so as not to damage the
thread on the studs.
Additional rear jack attachment on All Wheel Drive cars
Attaching the jack on cars with All Wheel Drive (AWD)
Due to the greater weight of AWD-equipped cars, these models have an additional jack attachment point located
directly in front of the rear axle. When using a workshop floor jack, make sure that the correct attachment is used and
that the jack does not damage the fuel tank.
The attachment is, of course, also intended for use with the standard jack supplied with the car.
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Proper Jack attachment on AWD cars.
Installing the wheel
Clean the contact surfaces on the wheel and hub. Lift the wheel and place it on the hub. Make sure that you align the
wheel with the guide stud on the wheel hub prior to installation. Install the wheel bolts crosswise (see illustration) and
tighten by turning lightly clockwise. Lower the vehicle to the ground and alternately tighten the nuts to 81 ft. lbs. (110
Nm). Install the wheel cap (where applicable).

Correct tightening order for wheel bolts
pg. 94 Spare tire
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