flat tire VOLVO S90 T8 2018 Owner´s Manual

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PRACTICAL INFORMATION
96
WARNING
•Exceeding the permissible axle weight, gross vehicle weight, or any other weightrating limits can cause tire overheatingresulting in permanent deformation orcatastrophic failure.
• Do not use replacement tires with lowerload carrying capacities than the tires thatwere original equipment on the vehiclebecause this will lower the vehicle's GVWrating. Use only tires with the correct loadcarrying capacity. Consult your Volvoretailer for information.
Related information
• Label information (p. 144)
• Weights (p. 149)
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 tractiongrade 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.

PRACTICAL INFORMATION
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97
Snow tires and chains
The use of snow chains and/or winter tires can help improve traction in winter driving conditions.
Snow chains can be used on your Volvo with the following restrictions:
• Snow chains should be installed on frontwheels only. Use only Volvo approved snowchains.
• If accessory, aftermarket or "custom" tiresand wheels are installed and are of a size dif-ferent than the original tires and wheels,chains in some cases CANNOT be used.Sufficient clearances between chains andbrakes, suspension and body componentsmust be maintained.
• Some strap-on type chains will interfere withbrake components and therefore CANNOTbe used.
• All Wheel Drive models
: Snow chains
should only be installed on the front wheels.
• Certain size tires may not allow the assemblyof snow chains/traction devices.
Consult your Volvo retailer for additional snowchain information.
CAUTION
• Snow chains should not be used on wheels larger than 18".
• Always follow the chain manufacturer'sinstallation instructions carefully. Installchains as tightly as possible andretighten periodically.
• Check local regulations regarding the useof snow chains before installing.
• Use single-sided snow chains only.
• Never exceed the chain manufacturer'sspecified maximum speed limit. (Underno circumstances should you exceed31 mph (50 km/h).
• Avoid bumps, holes or sharp turns whendriving with snow chains.
• The handling of the vehicle can beadversely affected when driving withchains. Avoid fast or sharp turns as wellas locked wheel braking.
Checking tire inflation pressure
Correct tire inflation pressure helps improve driv- ing stability, save fuel and increase the servicelife of the tires.
WARNING
• Under-inflation is the most common cause of tire failure and may result insevere tire cracking, tread separation, or"blow-out," with unexpected loss of vehi-cle control and increased risk of injury.
• Under-inflated tires reduce the load car-rying capacity of your vehicle.
Cold tiresInflation pressure should be checked when thetires 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 vehicle 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 youhave to drive farther than this distance to pumpyour tire(s), check and record the tire pressurefirst and add the appropriate air pressure whenyou get to the pump. When weather temperature changes occur, tire inflation pressures also change. A 10-degree

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PRACTICAL INFORMATION
98temperature drop causes a corresponding drop of 1 psi (7 kPa) in inflation pressure. Check yourtire pressures frequently and adjust them to theproper pressure, which can be found on the vehi-cle's tire information placard or certification label. If checking tire pressure when the tire is hot, never "bleed" or reduce air pressure. The tiresare hot from driving and it is normal for pressuresto increase above recommended cold pressures.A hot tire at or below recommended cold inflationpressure could be significantly under-inflated.
Recommended inflation pressures
Tire inflation placard
A tire inflation pressure placard is located on the driver's side B-pillar (the structural member at theside of the vehicle, at the rear of the driver's dooropening). This placard indicates the designation
of the factory-mounted tires on your vehicle, aswell as load limits and inflation pressure.
NOTE
•
The placard shown indicates inflation pressure for the tires installed on thevehicle at the factory only.
• A certain amount of air seepage from thetires occurs naturally and tire pressurefluctuates with seasonal changes in tem-perature. Always check tire pressure reg-ularly.
•Use a tire gauge to check the tire inflation pressure, including the spare 6
, at least once
a month and before long trips. You are strongly urged to buy a reliable tire pressuregauge, as automatic service station gaugesmay be inaccurate.
• Use the recommended cold inflation pres-sure for optimum tire performance and wear.
• Under-inflation or over-inflation may causeuneven treadwear patterns.
Checking tire pressure1. Remove the cap from the valve on one tire,
then firmly press the tire gauge onto thevalve. 2. Add air to reach the recommended air pres-
sure.
3. Replace the valve cap.
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.
4. 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.
5. Check the sidewalls to make sure there are no gouges, cuts, bulges or other irregulari-ties.
6. Repeat this procedure for each tire, including the spare.
6Not available in all models.

PRACTICAL INFORMATION
* Option/accessory.99
NOTE
•If you overfill the tire, release air by push- ing on the metal stem in the center of thevalve. Then recheck the pressure withyour tire gauge.
• Some spare tires require higher inflationpressure than the other tires. Consult thetire inflation pressure table or the inflationpressure placard.
Changing tires
When changing wheels to another dimension, always follow Volvo's instructions.
When changing to tires of another
dimension
If you mount tires with a dimension other thanthe factory-installed tires, contact an authorizedVolvo retailer to update the vehicle's software.This may also be necessary when changing fromsummer to winter tires, or vice versa.
Related information
• Snow tires and chains (p. 97)
• Installing a wheel (p. 102)
• Removing a wheel (p. 101)
Tools
Tools for e.g., changing wheels, etc., are located under the floor of the trunk.
Generic illustration - the appearance and location of the foam block may vary from model to model
The foam block under the floor of the trunk con- tains the towing eyelet, the tool for removing plastic wheel bolt covers, the jack * and the lug
wrench *. There is also a storage space for the
tool used to remove locking wheel bolts.
Related information
• Jack (p. 100)
• Changing tires (p. 99)

PRACTICAL INFORMATION
* Option/accessory.
100
Jack
The jack is used to raise the vehicle, for example when mounting winter wheels, etc.
WARNING
• The jack must correctly engage the jack attachment.
• Be sure the jack is on a firm, level, non-slippery surface.
• Never allow any part of your body to beextended under a vehicle supported by ajack.
• Use the jack intended for the vehiclewhen changing a tire. For any other job,use stands to support the vehicle.
• Apply the parking brake and put the gear selector in the Park (
P) position.
• Block the wheels standing on the ground, use rigid wooden blocks or large stones.
• The jack should be kept well-greased andclean, and should not be damaged.
• No objects should be placed between thebase of jack and the ground, or betweenthe jack and the attachment bar on thevehicle.
CAUTION
•
When not in use, the jack
* should be kept
in its storage compartment under the cargo compartment floor.
• The jack provided with your vehicle isintended to be used only in temporary sit-uations such as changing wheels in theevent of a flat tire. Only the jack thatcame with your particular model shouldbe used to lift the vehicle. If the vehicleneeds to be lifted more frequently or for aprolonged period, using a garage jack orhoist is recommended. Always follow thisdevice

PRACTICAL INFORMATION
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* Option/accessory.101
Removing a wheel
Wheel changes should always be carried out correctly.
1. Turn on the hazard warning flashers if the wheel change has to be done near passing traffic.
2. Apply the parking brake and put the gear selector in P.
CAUTION
Models with suspension and level con- trol *:
Turn this function off before raising the vehi- cle. To do so, go to
SettingsVehicleDisable Leveling Control in the center dis-
play's Top view.
WARNING
• The jack must correctly engage the jack attachment.
• Be sure the jack is on a firm, level, non-slippery surface.
• Never allow any part of your body to beextended under a vehicle supported by ajack.
• Use the jack intended for the vehicle whenchanging a tire. For any other job, usestands to support the vehicle.
• Apply the parking brake and put the gear selector in the Park (
P) position.
• Block the wheels standing on the ground, use rigid wooden blocks or large stones.
• The jack should be kept well-greased andclean, and should not be damaged.
• No objects should be placed between thebase of jack and the ground, or betweenthe jack and the attachment bar on thevehicle.
NOTE
The jack provided with your vehicle is intended to be used only in temporary situa-tions such as changing wheels in the event ofa flat tire. Only the jack that came with yourparticular model should be used to lift thevehicle. If the vehicle needs to be lifted morefrequently or for a prolonged period, using agarage jack or hoist is recommended. Alwaysfollow this device

PRACTICAL INFORMATION
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103
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.
Related information
• Wheel bolts (p. 100)
• Jack (p. 100)
Tire Pressure Monitoring System (TPMS) TPMS provides a warning if inflation pressure in one or more tires is too low. It also uses a sym-bol (called a telltale) that will flash for60 seconds and then glow steadily if there is asystem malfunction.
TPMS uses the rotational speed of the tires in combination with signal analysis of the ABS sen-sor signals to determine if they are properly infla-ted. When a tire is under-inflated, its diameter(and consequently also its rotational speed)changes. By comparing the individual tires witheach other it is possible to determine if one ormore tires are under inflated. If inflation pressureis too low, an indicator symbol will illuminate inthe instrument panel and a text message will bedisplayed.
Symbol
Explanation
The symbol illuminates to indicate low tire inflation pressure. If a malfunction occurs in the sys- tem, the tire pressure warning sym-bol will flash for approximately1 minute and then remain illumi-nated.
Each tire, including the spare (if provided), should be checked monthly when cold and inflated to the inflation pressure recommended by the vehi-cle manufacturer on the vehicle placard or tireinflation pressure label. (If your vehicle has tiresof a different size than the size indicated on thevehicle placard or tire inflation pressure label, youshould determine the proper tire inflation pres-sure for those tires.) As an added safety feature, your vehicle has been equipped with a tire pressure monitoringsystem (TPMS) that illuminates a low tire pres-sure telltale when one or more of your tires issignificantly under-inflated. Accordingly, when thelow tire pressure telltale illuminates, you shouldstop and check your tires as soon as possible,and inflate them to the proper pressure. Driving on a significantly under-inflated tire cau- ses the tire to overheat and can lead to tire fail-ure. Under-inflation also reduces fuel efficiencyand tire tread life, and may affect the vehicle'shandling and stopping ability. Please note thatthe TPMS is not a substitute for proper tire main-tenance, and it is the driver's responsibility tomaintain correct tire pressure, even if under-infla-tion has not reached the level to trigger illumina-tion of the TPMS low tire pressure telltale. Your vehicle has also been equipped with a TPMS malfunction indicator to indicate when thesystem is not operating properly. The TPMS mal-function indicator is combined with the low tirepressure telltale.

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PRACTICAL INFORMATION
104When the system detects a malfunction, the tell- tale will flash for approximately one minute andthen remain continuously illuminated. Thissequence will continue upon subsequent vehiclestart-ups as long as the malfunction exists. Whenthe malfunction indicator is illuminated, the sys-tem may not be able to detect or signal low tirepressure as intended. TPMS malfunctions may occur for a variety of reasons, including the installation of replacementor alternate tires or wheels on the vehicle thatprevent the TPMS from functioning properly.Always check the TPMS malfunction telltale afterreplacing one or more tires or wheels on yourvehicle to ensure that the replacement or alter-nate tires and wheels allow the TPMS to con-tinue to function properly.
Messages in the instrument panel
When the TPMS symbol illuminates, the following text messages may also be displayed:
•
Tire pressure low Check tires, calibrate
after fill
•Tire pressure system Temporarily
unavailable
•Tire pressure system Service required
If TPMS cannot determine which tire(s) have low inflation pressure:
• All four tires will be shown as affected in thecenter display After changing wheels, always calibrate the sys-tem to avoid false warnings. TPMS does not replace the need for regular tire inspection and maintenance.
NOTE
If you change to tires with a different dimen- sion than the factory-installed ones, theTPMS system must be calibrated for thesetires. TPMS cannot be turned off.
WARNING
Incorrect inflation pressure could lead to tire failure, resulting in a loss of control of thevehicle.
Related information
•
Checking tire inflation pressure (p. 104)
• Reinflating tires equipped with the Tire Pressure Monitoring System (TPMS)(p. 105)
Checking tire inflation pressure
The Tire Pressure Monitoring System (TPMS) makes it possible to view the current inflationpressure status of all four tires.
Checking inflation pressure
1. Open the Car status app in the center dis-
play's Application view.
2. Tap
TPMS to see the tires' current inflation
pressure status.
The on-screen graphic displays the inflation pres- sure status.

PRACTICAL INFORMATION
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105
Status view. The illustration is generic and may vary from model to model or after a software update
Color indications: Green: tire pressure is above the threshold for a
low inflation pressure warning. Yellow : low tire pressure.
• One yellow wheel: the tire indicated is under- inflated.
• All wheels yellow: two or more tires areunder-inflated.
Stop safely and check/re-inflate the tire(s) assoon as possible. Calibrate TPMS after re-inflat-ing the tire(s). All wheels gray:
• Calibration is underway
• Inflation pressure status is not known It might be necessary to drive at a speed of at least 22 mph (35 km/h) for several minutes forthe system to become operational. All wheels gray combined with the message
Tire pressure system Temporarily
unavailable and the TPMS symbol in the
instrument panel (
) remains illuminated
after flashing for 1 minute : the system is tem-
porarily unavailable. It should become operational again shortly. All wheels gray combined with the message
Tire pressure system Service required and
the TPMS symbol in the instrument panel (
) remains illuminated after flashing for
1 minute : the system is not functioning correctly.
Have it checked by a trained and qualified Volvo service technician.
Related information
• Calibrating the Tire Pressure MonitoringSystem (TPMS) (p. 106)
• Reinflating tires equipped with the TirePressure Monitoring System (TPMS)(p. 105)
• Tire Pressure Monitoring System (TPMS)(p. 103)
Reinflating tires equipped with the Tire Pressure Monitoring System(TPMS) When low tire pressure has been detected, a message will be displayed in the instrumentpanel and the Tire Pressure Monitoring Systemsymbol will illuminate.
Symbol
Explanation
When the TPMS symbol illuminates and a message is displayed, check,reinflate the tire(s) and calibrateTPMS.
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 located on the driver's side B-pillar (the structural mem-ber at the side of the vehicle, at the rear ofthe driver's door opening) or the inflationpressure table in your printed owner's man-ual supplement.
3. Calibrate the Tire Pressure Monitoring System, see the article "Calibrating the TirePressure Monitoring System".

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PRACTICAL INFORMATION
1064. Drive the vehicle at a speed of at least
22 mph (35 km/h). Please be aware that the TPMS telltale warning will not go out untilthe low tire pressure has been corrected andcalibration has been carried out.
NOTE
To help avoid incorrect tire inflation pressure, if possible only inflate the tires when they arecold. The tires are considered to be coldwhen they have the same temperature as thesurrounding (ambient) air. This temperature isnormally reached after the vehicle has beenparked for at least 3 hours. After driving a dis-tance of approximately 1 mile (1.6 km), thetires are considered to be warm.
CAUTION
When inflating tires, press the pump's mouth- piece straight onto the valve to help avoidbending or otherwise damaging the valve.
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)(p. 103)
• Checking tire inflation pressure (p. 104)
• Calibrating the Tire Pressure MonitoringSystem (TPMS) (p. 106)
Calibrating the Tire Pressure Monitoring System (TPMS)
In order for the Tire Pressure Monitoring System to work properly, tire pressure reference valuesmust be set correctly. This must be done eachtime wheels are changed or tire inflation pres-sures are modified.
Calibrating TPMSTo calibrate the system:
1. Switch off the engine. The vehicle must be at a standstill when calibration is started.