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Tire specifications – terminologyThe following is a glossary of tire-related terms.
The tire suppliers may have additional markings, notes or warnings such as standard load, radialtubeless, etc.
• Tire information placard
: A placard show-
ing the OE (Original Equipment) tire sizes,recommended inflation pressure, and themaximum weight the vehicle can carry.
• Tire Identification Number (TIN)
: A number
on the sidewall of each tire providing infor-mation about the tire brand and manufactur-ing plant, tire size and date of manufacturer.
• Inflation pressure
: A measure of the
amount of air in a tire.
• Standard load
: A class of P-metric or Metric
tires designed to carry a maximum load at35 psi [37 psi (2.5 bar) for Metric tires].Increasing the inflation pressure beyond thispressure will not increase the tires load car-rying capability.
• Extra load
: A class of P-metric or Metric
tires designed to carry a heavier maximumload at 41 psi [43 psi (2.9 bar) for Metrictires]. Increasing the inflation pressurebeyond this pressure will not increase thetire's load carrying capability.
• kPa
: Kilopascal, a metric unit of air pressure.
• PSI
: Pounds per square inch, a standard unit
of air pressure. •
B-pillar
: The structural member at the side
of the vehicle behind the front door.
• Bead area of the tire
: Area of the tire next
to the rim.
• Sidewall of the tire
: Area between the bead
area and the tread.
• Tread area of the tire
: Area of the perime-
ter of the tire that contacts the road whenmounted on the vehicle.
• Rim
: The metal support (wheel) for a tire or a
tire and tube assembly upon which the tirebeads are seated.
• Maximum load rating
: a figure indicating
the maximum load in pounds and kilogramsthat can be carried by the tire. This rating isestablished by the tire manufacturer.
• Maximum permissible inflation pressure
:
the greatest amount of air pressure thatshould ever be put in the tire. This limit is setby the tire manufacturer.
• Recommended tire inflation pressure
:
inflation pressure, established by Volvo,which is based on the type of tires that aremounted on a vehicle at the factory. Thisinformation can be found on the tire inflationplacard(s) located on the driver's side B-pillarand in the tire inflation table in this chapter.
• Cold tires
: The tires are considered to be
cold when they have the same temperatureas the surrounding (ambient) air. This tem- perature is normally reached after the vehiclehas been parked for at least 3 hours.
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Tire specifications – Uniform Tire Quality Grading ALL PASSENGER VEHICLE TIRES MUST CONFORM TO FEDERAL SAFETY REQUIRE-MENTS IN ADDITION TO THESE GRADES.
Quality grades can be found, where applica- ble, on the tire sidewall between the treadshoulder and maximum section width. Forexample: Treadwear 200 Traction AA Temperature A
TREADWEARThe treadwear grade is a comparative rating based on the wear rate of the tire when testedunder controlled conditions on a specified gov-ernment test course. For example, a tire graded150 would wear one and one half (1 ½) times aswell on the government course as a tire graded100. The relative performance of tires dependsupon the actual conditions of their use, however,and many depart significantly from the norm dueto variation in driving habits, maintenance practi-ces and differences in road characteristics andclimate.
TRACTIONThe traction grades, from highest to lowest, areAA, A, B, and C, as measured under controlledconditions on specified government test surfacesof asphalt and concrete. A tire marked C mayhave poor traction performance. The traction grade assigned to this tire is based on braking(straight-ahead) traction tests and is not a meas-ure of cornering (turning) traction.
WARNING
The traction grade assigned to this tire is based on braking (straight-ahead) tractiontests and is not a measure of cornering (turn-ing) traction.
TEMPERATUREThe temperature grades are A (the highest), B, and C, representing the tire's resistance to thegeneration of heat and its ability to dissipate heatwhen tested under controlled conditions on aspecified indoor laboratory test wheel. Sustainedhigh temperature can cause the material of thetire to degenerate and reduce tire life, and exces-sive temperature can lead to sudden tire failure.The grade C corresponds to a minimum level ofperformance that all passenger vehicle tires mustmeet under the Federal Motor Safety StandardNo. 109. Grades B and A represent higher levelsof performance on the laboratory test wheel thanthe minimum required by law.
WARNING
The temperature grade for this tire is estab- lished for a tire that is properly inflated andnot overloaded. Excessive speed, under-infla-tion, or excessive loading, either separately orin combination, can cause heat buildup andtire failure.
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prevent the tire pressure monitoring system from functioning properly. Always check the system's malfunction telltale after replacing one or more tires or wheels onyour vehicle to ensure that the replacement oralternate tires and wheels allow the system tocontinue to function properly.
NOTE
The system indicates low tire pressure but does not replace normal tire maintenance. Forinformation on correct tire pressure, pleaserefer to the tire inflation decal on the driver'sdoor opening or consult your Volvo retailer.
WARNING
Incorrect inflation pressure could lead to tire failure, resulting in a loss of control of thevehicle.
Related information
•
Tire Monitor - introduction (p. 305)
• Tire Pressure Monitoring System (TPMS) – general information (p. 308)
Tire Monitor - introduction Tire Monitor uses the rotational speed of the tires in combination with signal analysis of theABS sensor signals to determine if they areproperly inflated.
When a tire is under-inflated, its diameter (and consequently also its rotational speed) changes.By comparing the individual tires with each otherit is possible to determine if one or more tires areunder inflated. When low inflation pressure is detected or if the system is not functioning properly, Tire Monitorwill light up the tire pressure warning light (
) (also referred to as a telltale) in the
instrument panel and will display one of several messages in the text window, for example:
Tire
pressure low Check tires. Adjust the inflation
pressure and recalibrate if necessary.
NOTE
If a malfunction occurs in the system, the tire pressure warning light will flash for approxi-mately 1 minute and then remain illuminated.
Tire press. syst Service required will be
displayed.
NOTE
The system indicates low tire pressure but does not replace normal tire maintenance. Forinformation on correct tire pressure, pleaserefer to the tire inflation decal on the driver'sdoor opening or consult your Volvo retailer.
Related information
• Tire pressure monitoring - overview (p. 304)
• Calibrating Tire Monitor (p. 306)
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307
ment panel (
) is illuminated
: the sys-
tem is temporarily unavailable. It should become operational again shortly.
Related information
• Tire Monitor – messages (p. 307)
Tire Monitor – messages
When low tire pressure has been detected, a message will be displayed and the tire pressure warning telltale in the instrument panel (
)
will illuminate.
MessagesIf the telltale illuminates, one of the following message will also be displayed: •
Tire pressure low/Check, adjust and
calibrate
•Tire pressure system/Service required
•Tire pressure system/Currently
unavailable
Erasing warning messagesTo erase a low tire pressure message and turn off the telltale:
1. Use a tire pressure gauge to check the infla- tion pressure of all four tires.
2. Re-inflate the tires to the correct pressure (consult the tire pressure decal on the driv- er's door opening.
3. Recalibrate Tire Monitor, see Calibrating Tire Monitor (p. 306).
NOTE
To help avoid incorrect tire inflation pressure, only inflate the tires when they are cold. Thetires are considered to be cold when theyhave the same temperature as the surround-ing (ambient) air. This temperature is normallyreached after the vehicle has been parked forat least 3 hours. After driving a distance ofapproximately 1 mile (1.6 km), the tires areconsidered to be hot.
CAUTION
• After inflating the tires, always reinstall the valve cap to help avoid damage to thevalve from dirt, gravel, etc.
• Use plastic valve caps only. Metal capscould corrode and become difficult toremove.
WARNING
•
Incorrect inflation pressure could lead to tire failure, resulting in a loss of control ofthe vehicle.
• Tire monitoring systems cannot indicatesudden tire damage caused by externalfactors (e.g., a blowout) in advance.
Related information
•Tire inflation – checking pressure (p. 297)
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Tire Pressure Monitoring System (TPMS) – general information TPMS uses sensors mounted in the tire valves to check inflation pressure levels. When thevehicle is moving at a speed of approximately20 mph (30 km/h) or faster, these sensorstransmit inflation pressure data to a receiverlocated in the vehicle.
NOTE
USA – FCC ID: KR5S180052050 This device complies with part 15 of the FCC rules. Operation is subject to the followingconditions: (1) This device may not causeharmful interference, and (2) this device mustaccept any interference received, includinginterference that may cause undesired opera-tion.
When low inflation pressure is detected or if a sensor is not functioning properly, TPMS will light up the tire pressure warning light (
) (also
referred to as a telltale) in the instrument panel and will display one of the following messages:
Tire pressure low, Tire needs air now or Tire
press. syst Service required.
NOTE
If a malfunction occurs in the system, the tire pressure warning light will flash for approxi-mately 1 minute and then remain illuminated.
Tire press. syst Service required will be
displayed.
Related information
• Tire Pressure Monitoring System (TPMS) – recalibrating (p. 309)
• Tire Pressure Monitoring System (TPMS) –messages (p. 310)
• Tire Pressure Monitoring System (TPMS) –activating/deactivating (p. 310)
• Tire Pressure Monitoring System (TPMS) –changing wheels (p. 308)
Tire Pressure Monitoring System (TPMS) – changing wheels
Please keep the following in mind when chang- ing or replacing the factory installed TPMSwheels/tires on the vehicle:
• Not all aftermarket wheels are equipped withTPMS sensors in the valves.
• If the vehicle is equipped with a temporaryspare tire, this tire does not have a TPMSsensor.
• If wheels without TPMS sensors are moun-ted on the vehicle, a text message will dis-played in the instrument panel each time thevehicle is driven above 20 mph (30 km/h) for10 minutes or more.
• Once TPMS sensors are properly installed,the warning message should not reappear. Ifthe message is still displayed, drive the vehi-cle for several minutes at a speed of 20 mph(30 km/h) or faster to erase the message.
• Volvo recommends that TPMS sensors befitted on all wheels used on the vehicle,including winter tires. Volvo does not recom-mend moving sensors back and forthbetween sets of wheels.
||
WHEELS AND TIRES
310After adjusting inflation pressure, repeat steps 1-5 above.
Related information
•
Tire Pressure Monitoring System (TPMS) –general information (p. 308)
• Tire Pressure Monitoring System (TPMS) –messages (p. 310)
• Tire Pressure Monitoring System (TPMS) –activating/deactivating (p. 310)
• Tire Pressure Monitoring System (TPMS) –changing wheels (p. 308)
• My Car – introduction (p. 77)
Tire Pressure Monitoring System (TPMS) – activating/deactivating
Activating/deactivating TPMS
(Canadian models only)
1. Switch off the engine. 2. Put the ignition in mode I or II (see Ignition
modes (p. 80) for additional information).
3. Press the MY CAR key in the center console
control panel and select
SettingsCar
settings
Tire pressure
4. Select Tire monitoring and press OK/
MENU to turn the system on or off.
Related information
•Tire Pressure Monitoring System (TPMS) – general information (p. 308)
Tire Pressure Monitoring System (TPMS) – messages
Erasing warning messagesWhen a low tire pressure warning message has been displayed and the tire pressure warning light in the instrument panell (
) has come
on:
1. Use a tire pressure gauge to check the infla- tion pressure of all four tires.
2. Re-inflate the tire(s) to the correct pressure (consult the tire pressure decal on the driv- er's door opening).
3. In certain cases, it may be necessary to drive the vehicle for several minutes at a speed of20 mph (30 km/h) or faster. This will erasethe warning text and the telltale will go out.
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}}
311
NOTE
•The tire monitoring systems use a tem- perature compensated pressure value.This pressure value is dependent on tiretemperature and ambient temperature,which can differ from the recommendedcold tire pressure in the tire inflation tableand on the tire pressure placard locatedon the driver's side B-pillar (the structuralmember at the side of the vehicle, at therear of the driver's door opening). Thismeans that it may sometimes be neces-sary to inflate them slightly above therecommended cold pressure value(approx. 3-4 psi or 0.2-0.3 bar) in orderto reset a low tire pressure warning.
• To help avoid incorrect tire inflation pres-sure, if possible only inflate the tireswhen they are cold. The tires are consid-ered to be cold when they have the sametemperature as the surrounding (ambi-ent) air. This temperature is normallyreached after the vehicle has beenparked for at least 3 hours. After driving adistance of approximately 1 mile (1.6 km),the tires are considered to be hot.
CAUTION
•
After inflating the tires, always reinstall the valve cap to help avoid damage to thevalve from dirt, gravel, etc.
• Use plastic valve caps only. Metal capscould corrode and become difficult toremove.
WARNING
•Incorrect inflation pressure could lead to tire failure, resulting in a loss of control ofthe vehicle.
• Tire monitoring systems cannot indicatesudden tire damage caused by externalfactors (e.g., a blowout) in advance.
Related information
•Tire Pressure Monitoring System (TPMS) – general information (p. 308)
• Tire Pressure Monitoring System (TPMS) –recalibrating (p. 309)
• Tire Pressure Monitoring System (TPMS) –activating/deactivating (p. 310)
• Tire Pressure Monitoring System (TPMS) –changing wheels (p. 308)
• Tire pressure monitoring - overview (p. 304)
Self-supporting run flat tires (SST)
Self-supporting run flat tires are available as optional equipment on certain models.
The vehicle must be equipped with one of the tire pressure monitoring systems if tires of this typeare installed. Tires of this type have specially reinforced side- walls that make it possible to continue driving toa limited extent even though the tire has lostsome or all of its inflation pressure. These tiresare mounted on special rims (normal tires canalso be mounted on these rims). If an SST tire loses inflation pressure, the yellow TPMS symbol illuminates in the instrument paneland a text message is also displayed. If this hap-pens, reduce speed to not more than 50 mph(80 km/h). The tire should be replaced as soonas possible.
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* Option/accessory, for more information, see Introduction.
312
WARNING
• SST tires should only be mounted by service technicians who are familiar withtires of this type.
• SST tires may only be mounted on vehi-cles equipped with a tire pressure moni-toring system.
• Do not drive faster than 50 mph(80 km/h) if the monitoring system indi-cates that a tire has lost inflation pres-sure.
• Do not drive farther than 50 miles(80 km) before replacing a damaged SSTtire.
• Drive carefully and avoid e.g., hard brakingor fast turns.
• SST tires must be replaced if they aredamaged. A tire of this type cannot berepaired.
Related information
• Tire pressure monitoring - overview (p. 304)
Tire sealing system
* – general
information
Certain models are equipped with a tire seal- ing system * that enables you to temporarily seal
a hole in the tread surface and re-inflate a flat tire, or to adjust a tire