WHEELS AND TYRES
574
Dimension designation for tyre
Designations for tyre dimension, load index
and speed rating.
The car has an approval for the complete vehi-
cle with certain combinations of wheel rims
and tyres.
Designation of dimensions
All tyres have a dimension designation, such
as: 235/60 R18 103 V.
235 Tyre width (mm)
60
Ratio between tyre wall height and
tyre width (%)
R
Radial ply
18
Rim diameter in inches
103
Codes for the maximum permitted
tyre load, tyre load index (LI)
V
Speed rating for maximum permitted
speed, speed rating (SS). (In this
case 240 km/h (149 mph).)
Load index
Each tyre has a certain capacity to carry a
load, a load index (LI). The car's weight deter-
mines the load capacity required of the tyres.
Speed rating
Each tyre can withstand a certain maximum
speed. Tyre speed rating, SS (Speed Symbol),
must at least correspond with the car's top
speed. The table below shows the maximum
permitted speed for each speed rating (SS).
The only exception to these regulations is win-
ter tyres
2
, where a lower speed rating may be
used. If such a tyre is selected, the car must
not be driven more quickly than the tyre is
rated for. For example, cars with Q rating tyres
must be driven at speeds not exceeding
160 km/h (100 mph). The road conditions and
applicable road traffic rules determine how
quickly the car can be driven, not the speed
rating of the tyres.
The maximum permitted speed is specified
in the table.
Q
160 km/h (100 mph) (used only on
winter tyres)
T
190 km/h (118 mph)
H
210 km/h (130 mph)
V
240 km/h (149 mph)
W 270 km/h (168 mph)
Y
300 km/h (186 mph)
WARNING
The lowest permitted load index (LI) and
speed rating (SS) for the tyres for each
respective engine variant are shown in the
car's registration document. If a tyre with
too low a load index or speed rating is
used, it may overheat and be damaged.
Related information
•
•
Dimension designation for wheel rim
(p. 575)
2
Both those with metal studs and those without.
Summary of Contents for XC60 Twin Engine 2020
Page 1: ...XC60 T W I N E N G I N E OWNER S MANUAL...
Page 2: ......
Page 18: ......
Page 19: ...OWNER S INFORMATION...
Page 28: ......
Page 29: ...YOUR VOLVO...
Page 45: ...SAFETY...
Page 77: ...DISPLAYS AND VOICE CONTROL...
Page 149: ...LIGHTING...
Page 164: ......
Page 165: ...WINDOWS GLASS AND MIRRORS...
Page 183: ...SEATS AND STEERING WHEEL...
Page 200: ......
Page 201: ...CLIMATE...
Page 238: ......
Page 239: ...KEY LOCKS AND ALARM...
Page 259: ...KEY LOCKS AND ALARM 257 Country Area Type approval Oman Serbia...
Page 262: ...KEY LOCKS AND ALARM 260 Country Area Type approval Oman Serbia...
Page 284: ......
Page 285: ...DRIVER SUPPORT...
Page 416: ......
Page 417: ...HYBRID INFORMATION...
Page 444: ......
Page 445: ...STARTING AND DRIVING...
Page 514: ......
Page 515: ...SOUND MEDIA AND INTERNET...
Page 570: ......
Page 571: ...VOLVO ON CALL...
Page 573: ...WHEELS AND TYRES...
Page 600: ......
Page 601: ...LOADING STORAGE AND PASSENGER COMPARTMENT...
Page 621: ...MAINTENANCE AND SERVICE...
Page 644: ...MAINTENANCE AND SERVICE 642 Fuses in engine compartment p 643 Fuses under glovebox p 650...
Page 679: ...SPECIFICATIONS...
Page 713: ......
Page 714: ...TP 28778 English Int AT 1917 MY20 Copyright 2000 2019 Volvo Car Corporation...