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VOLVO
S & V 40
Chapter 5 - Wheels and tires
pg. 75 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. General information, Wear indicator, Tire economy, Flat spots
76
Snow chains, Winter tires77
Inflation pressure78
Uniform tire quality grading79
"Special spare" tire80
pg. 76 Wheels and tires
General information
Your vehicle is equipped with tires according to the tire information label located on the inside of the fuel filler
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 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/icefree surfaces. 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 from the same manufacturer, on all four
wheels. Otherwise there is a risk of altering the car's roadholding 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
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tire damage.
Wear indicator
The tires have a socalled "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 become visible 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 filler door.
· 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 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.
pg. 77 Wheels and tires
Snow chains
Snow chains can be used on your Volvo with the following restrictions:
· Snow chains should be installed on front wheels only. Use only Volvo approved snow chains.
· Snow chains may only be mounted on approved snow tires 195/55 R15. Consult your Volvo retailer.
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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. Sufficient clearances between chains and brakes, suspension and
body components must be maintained.
· Some strapon type chains will interfere with brake components and therefore CANNOT be used.
Consult your Volvo retailer for additional snow chain information.
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 195/55 R15 winter tires
on 15" steel rims on all S/V 40 models.
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 runin 300600 miles (5001000 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
direction throughout their entire 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.
CAUTION:
· Check local regulations regarding the use of snow chains before installing.
· Always follow the chain manufacturer's installation instructions carefully. Install chains as tightly as possible and
retighten periodically.
· Never exceed the chain manufacturer'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.
* Where permitted.
pg. 78 Wheels and tires
Checking and correcting tire pressure
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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.
pg. 80 Spare tire
Special Spare
The spare tire in your car is called a "Special Spare". It has the following designation: 124/90 R15 96M.
Recommended tire pressure (see decal on the inside of the fuel filler door) should be maintained irrespective of which
position on the car the Special Spare tire is used on.
In the event of damage to this tire, a new one can be purchased from your Volvo retailer.WARNING!
Current legislation prohibits the use of the "Special Spare" tire other than as a temporary replacement for a punctured
tire. In other words, it must be replaced as soon as possible by a standard tire. Roadholding, etc., may be affected
with the "Special Spare" in use. Do not, therefore, exceed 50 mph (80 km/h).
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.
CAUTION: We recomend that you switch the DSA system off whenever you use the "Special Spare" tire that does
not match the diameter of your other tires. See page 28
.
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The screwdriver is combined with the socket wrench. The tools can be alternated by pulling the shaft out of the handle
and reinserting the opposite end of the shaft into the handle.
Removing the jack
Take the spare wheel out.
Tighten the jack slightly by turning the axle (1) and remove it from the retaining clip.
Replacing the jack
Put the jack in the clip and turn axle (1) until the jack is securely in place.
Replace the tools in the same place.
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 should never be greased or lubricated.
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 pages) must be correctly placed in the jack attachment.
· 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 side of the
car being worked on.
· Apply the parking brake and put the gear selector in position P.
· Block the wheels standing on the ground, use rigid wooden blocks or large stones.
· The jack should be kept well-greased.
· Use gloves
pg. 83 Wheel changing
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