2017 VOLVO XC90 TWIN ENGINE HYBRID warning

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10.Maximum Load: Indicates the maximumload in pounds and kilograms that can becarried by the tire. Refer to the vehicle's tireinformation placard located on the B-Pillarfor the correct tire pressure for your vehicle.
11.Treadwear, Traction, and Temperaturegrades.
12.Maximum permissible inflationpressure: the greatest amount of air pres-sure that should ever be put in the tire. Thislimit is set by the tire manufacturer.

Speed Symbol
A tire's Speed Symbol (SS) indicates the maxi-mum speed for which the tire has been certifiedand should be at least equivalent to the vehicle'stop speed.
Winter tires, with our without studs, are excep-tions and may use a lower SS. When winter tiresare installed, the vehicle may not be driven fasterthan the tires' SS.
The vehicle's speed should always be determinedby the posted speed limit and traffic and roadconditions, not the tire's SS.
The following table indicates the maximum per-missible speed for each SS.
Speed Symbol
M81 mph (130 km/h)
Q100 mph (160 km/h)
T118 mph (190 km/h)
H130 mph (210 km/h)
V149 mph (240 km/h)
W168 mph (270 km/h)
Y186 mph (300 km/h)

WARNING
•The wheel and tire sizes for your Volvoare specified to meet stringent stabilityand handling requirements. Unapprovedwheel/tire size combinations can nega-tively affect your vehicle's stability andhandling.
•Any damage caused by installation ofunapproved wheel/tire size combinationswill not be covered by your new vehiclewarranty. Volvo assumes no responsibilityfor death, injury, or expenses that mayresult from such installations.
Wheel (rim) designations
Wheel and rim dimensions are shown in the fol-lowing table.
The vehicle has been certified with certain combi-nations of wheels and tires.
The following table shows an example of wheeldimensions: 8Jx18x42.5. This particular wheelmay not be available on your vehicle.
8Wheel width in inches
JRim flange profile
18Wheel diameter in inches
42.5Offset in mm (distance from the centerof the wheel to the wheel's contact sur-face on the hub)

Related information
•Tire sidewall designations (p. 480)

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Tire terminology
The 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 numberon 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 theamount of air in a tire.
•Standard load: A class of P-metric or Metrictires 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 Metrictires 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 unitof air pressure.
•B-pillar: The structural member at the sideof the vehicle behind the front door.
•Bead area of the tire: Area of the tire nextto the rim.
•Sidewall of the tire: Area between the beadarea 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 atire and tube assembly upon which the tirebeads are seated.
•Maximum load rating: a figure indicatingthe 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 becold 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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Loading specifications
Properly loading your vehicle will provide maxi-mum return of vehicle design performance.

Weight designations
Before loading your vehicle, familiarize yourselfwith the following terms for determining yourvehicle's weight ratings, with or without a trailer,from the vehicle's Federal/Canadian Motor Vehi-cle Safety Standards (FMVSS/CMVSS) label, andthe vehicle's tire information placard:

Curb weight
The weight of the vehicle including a full tank offuel and all standard equipment. It does notinclude passengers, cargo, or optional equipment.

Capacity weight
All weight added to the curb weight, includingcargo and optional equipment. When towing,trailer hitch tongue load is also part of cargoweight.

Permissible axle weight
The maximum allowable weight that can be car-ried by a single axle (front or rear). These num-bers are shown on the Federal/Canadian MotorVehicle Safety Standards (FMVSS/CMVSS) label.The total load on each axle must never exceed itsmaximum permissible weight.

Gross vehicle weight (GVW)
The vehicle's curb weight + cargo + passengers.
Steps for Determining Correct Load
Limit
1. Locate the statement "the combined weightof occupants and cargo should never exceedXXX kg or XXX lbs." on your vehicle's plac-ard.
2. Determine the combined weight of the driverand passengers that will be riding in yourvehicle.
3. Subtract the combined weight of the driverand passengers from XXX kg or XXX lbs.
4. The resulting figure equals the availableamount of cargo and luggage load capacity.For example, if the "XXX" amount equals1400 lbs. and there will be five 150 lb. pas-sengers in your vehicle, the amount of availa-ble cargo and luggage load capacity is650 lbs. (1400 – 750 (5 × 150) = 650 lbs.)
5. Determine the combined weight of luggageand cargo being loaded on the vehicle. Thatweight may not safely exceed the availablecargo and luggage load capacity calculatedin Step 4.
6. If your vehicle will be towing a trailer, loadfrom your trailer will be transferred to yourvehicle. Consult this manual to determinehow this reduces the available cargo and lug-gage load capacity of your vehicle.
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. 558)
•Weights (p. 563)

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Uniform Tire Quality Grading
ALL PASSENGER VEHICLE TIRES MUSTCONFORM 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

TREADWEAR
The treadwear grade is a comparative ratingbased 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.

TRACTION
The 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 isbased on braking (straight-ahead) tractiontests and is not a measure of cornering (turn-ing) traction.

TEMPERATURE
The 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.
Snow tires and chains
The use of snow chains and/or winter tires canhelp improve traction in winter driving conditions.
Snow chains can be used on your Volvo with thefollowing 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 chainsshould 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.

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CAUTION
•Snow chains should not be used onwheels larger than 19".
•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 commoncause 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 tires
Inflation pressure should be checked when thetires are cold.
The tires are considered to be cold whenthey have the same temperature as the sur-rounding (ambient) air.
This temperature is normally reached after thevehicle 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, tireinflation pressures also change. A 10-degree
temperature drop causes a corresponding dropof 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 thedriver'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

WHEELS AND TIRES
* Option/accessory, for more information, see Introduction.488
Tools
Tools for e.g., changing wheels, etc. are locatedunder the cargo compartment floor.
The foam block under the cargo compartmentfloor contains the towing eyelet, the tool forremoving plastic wheel bolt covers, the jack* andthe lug wrench*. There is also a storage space forthe tool used to remove locking wheel bolts.

Related information
•Jack (p. 488)
•Changing tires (p. 487)
Jack
The jack is used to raise the vehicle, for examplewhen mounting winter wheels, etc.
WARNING
•The jack must correctly engage the jackattachment.
•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 gearselector 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 keptin its storage compartment under thecargo 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

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* Option/accessory, for more information, see Introduction.489
Wheel bolts
The wheel bolts hold the wheel in place.

CAUTION
Wheel bolts should be tightened to 103 ft.lbs. (140 Nm). Over-tightening could damagethe threads.
Only use wheels/rims that have been tested andapproved by Volvo and are included in Volvo'sproduct range.
Use a torque wrench to check that the wheelbolts are tightened correctly.
Never lubricate the wheel bolts' threads.

Locking wheel bolts *
A tool for removing locking wheel bolts can befound in the foam block under the cargo com-partment floor.

Related information
•Changing tires (p. 487)
•Installing a wheel (p. 491)
Removing a wheel
Wheel changes should always be carried outcorrectly.
1. Turn on the hazard warning flashers if thewheel change has to be done near passingtraffic.
2.Apply the parking brake and put the gearselector in P.
CAUTION
Models with suspension and level con-trol*:
Turn this function off before raising the vehi-cle.
To do so, go to SettingsVehicleDeactivate Suspension & Leveling Controlin the center display's Top view.
WARNING
•The jack must correctly engage the jackattachment.
•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 gearselector 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.

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Installing a wheel
It is important to install wheels properly.
1. Clean the contact surfaces on the wheel andhub.
2.Lift the wheel and place it on the hub.
3. Install the wheel bolts and tighten hand-tight.Using the lug wrench, tighten crosswise untilall bolts are snug.
4.Lower the vehicle to the ground and alter-nately tighten the bolts crosswise to103 ft. lbs. (140 Nm).
5. Press the plastic covers onto the wheel bolts.

CAUTION
•After inflating the tires, always reinstallthe 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. 489)
•Jack (p. 488)
Tire Pressure Monitoring System(TPMS)
TPMS provides a warning if inflation pressure inone 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 incombination 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.
SymbolExplanation
The symbol illuminates to indicatelow 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), shouldbe checked monthly when cold and inflated to