2020 VOLVO XC90 TWIN ENGINE tire type

WHEELS AND TIRES
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549
Tread wear indicatorThe tread wear indicator shows the status of the tire's tread.
The tread wear indicator is a narrow elevated strip running across the tire's longitudinaltread grooves. The letters TWI (Tread WearIndicator) are visible on the side of the tire.When approximately 1.6 mm (1/16 inch) is lefton the tread, the tread will be at the sameheight as the tread wear indicator. Replace thetire as soon as possible. Tires with low treadoffer very poor traction in rain or snow.
Related information
Tires (p. 546)
Tire terminology
The following is a glossary of tire-related terms.
The tire suppliers may have additional mark- ings, notes or warnings such as standard load,radial tubeless, etc.
Tire information placard
: A placard
showing the OE (Original Equipment) tiresizes, recommended inflation pressure,and the maximum weight the vehicle cancarry.
Tire Identification Number (TIN)
: A num-
ber on the sidewall of each tire providinginformation about the tire brand and man-ufacturing plant, tire size and date of man-ufacture.
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 maximumload at 35 psi [37 psi (2.5 bar) for Metrictires]. Increasing the inflation pressurebeyond this pressure will not increase thetires load carrying 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 pres-
sure.
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 whichthe tire beads are seated.
Maximum load rating
: a figure indicating
the maximum load in pounds and kilo-grams that can be carried by the tire. Thisrating is established by the tire manufac-turer.
Maximum permissible inflationpressure
: the greatest amount of air pres-
sure that should ever be put in the tire.This limit is set by 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 infla-

WHEELS AND TIRES
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567
Snow tires
Snow tires are designed for winter driving conditions.
Volvo recommends snow tires with specific dimensions. The tire dimensions vary depend-ing on engine type. When driving with snowtires, the correct type of tires must be moun-ted on all four wheels.
NOTE
Contact a Volvo dealer for advice on the best choice of rims and tires.
Tips for changing snow tiresWhen switching between regular tires and snow tires, mark the tires according to whichside they were mounted on, e.g. L for left and
R for right.
Studded tiresStudded tires should be broken in by driving500–1000 km (300–600 miles) slowly andgently to help the studs settle properly in thetires. This gives the tire, and especially thestuds, a longer service life.
NOTE
Regulations regarding the use of studded tires vary from country to country.
Tread depthRoad conditions with ice, slush and low tem- peratures place considerably higher demandson tires than summer conditions. Volvo there-fore recommends not driving on snow tiresthat have a tread depth of less than 4 mm(0.15 inch).
Related information
When changing wheels (p. 560)
Winter driving (p. 450)
Tread wear indicator (p. 549)
Snow chains
Using snow chains and/or snow tires can help improve traction in winter driving condi-tions.
Volvo does not recommend use of snow chains on wheel dimensions larger than19 inches.
WARNING
Use Volvo genuine snow chains or equiva- lent snow chains that are suitable for thevehicle model and the tire and wheel sizes.Only one-sided snow chains are permit-
ted. If uncertain about snow chains, Volvo rec- ommends contacting an authorized Volvoworkshop. Use of the wrong snow chainscould cause serious damage to the vehicleand result in an accident.

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WHEELS AND TIRES
568
CAUTION
Snow chains can be used on the vehicle, with the following restrictions:
Always follow the manufacturer'sinstallation instructions carefully. Installchains as tightly as possible andretighten periodically.
Only put snow chains on the frontwheels (also applies to all-wheel drivevehicles).
If accessory, aftermarket or "custom"tires and wheels with different dimen-sions than the original tires and wheelsare used, snow chains in some casesmay NOT be used. Sufficient distancebetween the chains and brakes, sus-pension and body components mustbe maintained.
Check local regulations regarding theuse of snow chains before installing.
Never exceed the snow chain manu-facturer's specified maximum speedlimit. Under no circumstances shouldyou exceed 50 km/h (30 mph).
Avoid bumps, holes or sharp turnswhen driving with snow chains.
Avoid driving on surfaces withoutsnow as this wears out both the snowchains and the tires.
The handling of the vehicle can be adversely affected when driving withchains. Avoid fast or sharp turns aswell as locked wheel braking.
Some types of strap-on chains affectbrake components and therefore mustNOT be used.
Consult a Volvo retailer for more information about snow chains.
Related information
Winter driving (p. 450)
Tire sealing system 15
The temporary tire sealing system can be used to seal a puncture in a tire or to checkand adjust the pressure in the tire. Models equipped with a spare wheel 16
do not
have the tire sealing system.
WARNING
California Proposition 65 Operating, servicing and maintaining a pas- senger vehicle can expose you to chemi-cals including engine exhaust, carbon mon-oxide, phthalates, and lead, which areknown to the State of California to causecancer and birth defects or other reproduc-tive harm. To minimize exposure, avoidbreathing exhaust, do not idle the engineexcept as necessary, service your vehicle ina well ventilated area and wear gloves orwash your hands frequently when servicingyour vehicle. For more information go towww.P65Warnings.ca.gov/passenger-vehicle.
The tire sealing system consists of a compres- sor and a bottle containing sealing compound.The sealing functions as a temporary repair.

SPECIFICATIONS
* Option/accessory.
672
Approved tire pressure The following tire pressures are recom- mended by Volvo for your vehicle. Refer to the tire inflation placard for information spe-cific to the tires installed on your vehicle atthe factory.
Tire dimensions Cold tire pressure for up to seven people (depending on number of seats)
Front
psi (kPa) Rear
psi (kPa)
235/55 R19 275/45 R20 275/40 R21 275/35 R22 42 (290)
42 (290)
Temporary spare tire *
T125/80 R18 60 (420)
60 (420)
Related information
Type designations (p. 660)
Checking tire pressure (p. 553)
Recommended tire pressure (p. 555)

INDEX
679
HomeLink
® 471
programming 472
type approval 474
use 474
HomeLink ® remote control
programmable 471
Home safe lighting, Homesafe Lighting,Follow me home lighting, follow-me-
home lighting 165
Honk 205
Hood, opening 605
Horn 205
Hybrid battery 617 Charging 395
Hybrid battery gauge 90
Hybrid gauge 89
Hybrid mode 433, 439
I
IAQS (Interior Air Quality System) 212
IC (Inflatable Curtain) 63
ID, Volvo 28
Identification number 40
Ignition mode 415, 416
Immobilizer 259 Electronic immobilizer 259
Indicator symbols 97
Individual drive mode 433
Infant seats 69
Inflatable curtain 63
Inflatable Curtain 63
Inflating tires 573Inflation pressure adjusting 554
Checking 553
decal with recommended pressure 555
Inflation pressure monitoring 555 action 559
save new inflation pressure 557
Status 558
Inflation pressure table 672
Information display 86, 88
Infotainment (Audio and media) 478
Instrument cluster 86 settings 88
Instrument illumination 167
Instrument lighting 167
Instrument panel 86 App menu 107, 108hybrid-related symbols and mes-
sages 408
messages 109
settings 88
Instruments and controls 84 Instruments overview left-hand drive vehicle 84
Integrated booster cushion 79 folding down 81
folding up 80
IntelliSafe driver support 31
Interior Air Quality System 212
Intermittent wiping 181 Internet, see Internet-connected vehi- cle 524
Internet-connected vehicle 524 book service and repair 601
No connection or poor connection 529
send car data 602
system updates 600
iPod ®, connecting 506
ISOFIX/LATCH anchors 77

INDEX
685
Speed Limiter
change speed 311
Speed symbols, tires 550 Spin control 281
Stability and traction control system 281 sport mode 282, 283
Symbols and messages 284
Stains 639, 641, 642, 643
Start and lock system type designations 260
Start battery 459, 613 overload 459
Start engine 412 Starting the engine after a collision 64
Start the vehicle 412
Steel cargo grid 591
Steering assistance at risk of collision 364 Steering power level, see Steering wheel
resistance 280
Steering wheel 205, 206 heating 223
keypad 205
paddle 205
steering wheel adjustment 206
Steering wheel keypad 205
Steering wheel paddles 429 Steering wheel resistance, speed-
dependent 280
Stone chips and scratches 651, 652
Storage compartments 578 center console 579
glove compartment 583
sun visor 584
Sunroof pinch protection 170
Sun shade panoramic roof 176, 180
pinch protection 170
rear door 173
Sun visor 584 mirror lighting 166
Switching target vehicles with Adaptive Cruise Control 310
with Pilot Assist 310
Symbols dynamic 86
indicator symbols 97
warning symbols 100
Symbols and messages center display's status bar 127
hybrid-related 408
parking climate 239
system updates 600T
Tailgate locking/unlocking 250, 264
open/close with foot movement 272
power 269
unlocking from inside 266
Technician certification 40 Temperature adjusting 229, 230, 231
perceived 209
Temperature monitoring 400
Temporary Spare 565
Temporary tire sealing system 568 execution, checking 569
Inflating tires 573
Terms and conditions services 37
users 530
Tire dimensions 550 when changing wheels 560
Tires 546 direction of rotation 548
glossary of terms 549
inflation pressure table 672
mounting 564
pressure 672
removal 562

INDEX
686rotation when changing 546
specifications 550, 672
storage 546
tread wear indicator 549
winter tires 567
Tire sealing system Inflating tires 573
use 569
Tire tread 549
Tools 560 Top tether anchors (child restraint sys-
tems) 75
Top view 135
Total airing function 246
Towbar 463 removable, attaching, installing,
mounting 463
removable, removing, detaching 463
retractable 461
Towing 469
Towing capacity and towball load 667
Towing eyelet 469 TPMS - Tire Pressure Monitoring Sys-
tem 555
Traction control 281
Traffic information 486
Trailer driving with a trailer 465
Lamps 468
swaying 467
Trailer Stability Assist 282 trailer 467
Trailer stabilizer 282, 467 Trailer towing trailer hitch 463
Transmission 426 automatic 427, 428
Transmission fluid grade 670
Travel Link 494 Fuel 497
Notifications 496
Sports 498
weather 495
Tread depth 549 winter tires 567
Tread wear indicator 549
Trip computer 91 display in instrument panel 93
Trip odometer 91
Trip odometer resetting 94
Trip statistics 94 settings 95TroubleshootingAdaptive Cruise Control 296
Camera unit 322
City Safety 337
Radar unit 322
TSA - Trailer Stability Assist 467
Tunnel detection 159
Turn off engine 414
Turn signals 162Twin Engine general 394
Type approval HomeLink ® 474
radar system 319
U
Uniform Tire Quality Grading 552
Units 135 Unlocking settings 249
with key blade 258
USB socket for connecting media 506