tire size LEXUS RX450h 2015 Owner's Manual

5
When trouble arises
7715-2. Steps to take in an emergency
Installing the spare tire
Remove any dirt or foreign matter
from the wheel contact surface. If foreign matter is on the wheel
contact surface, the wheel nuts
may loosen while the vehicle is in
motion, causing the tire to come
off.
Install the spare tire and loosel y tighten each wheel nut by hand
by approximately the same amount.
Vehicles with a compact spare tire
Tighten the nuts until the tapered
portion comes into loose contact
with the disc wheel seat.
Vehicles with a full-size spare tire
Turn the nuts until the washers
come into contact with the wheel.STEP 1
STEP 2
Disc wheel
seatTapered portion
Wheel nut
Disc wheelWa s h e r

8076-1. Specifications
6
Vehicle specifications Tires and wheels
Type A
Type BTi r e s i z e P235/60R18 102V, T165/90D18 107M (spare)
Tire inflation pressure
(recommended cold tire
inflation pressure) Front: 33 psi (230 kPa, 2.3 kgf/cm 2
or bar)
Rear: 33 psi (230 kPa, 2.3 kgf/cm 2
or bar)
Spare: 60 psi (420 kPa, 4.2 kgf/cm 2
or bar)
Wheel size 18  7 1 /2J, 18  4T (spare)
Wheel nut torque 76 ft•lbf (103 N•m, 10.5 kgf•m)
Ti r e s i z e P235/60R18 102V
Tire inflation pressure
(recommended cold tire
inflation pressure) Front: 33 psi (230 kPa, 2.3 kgf/cm 2
or bar)
Rear: 33 psi (230 kPa, 2.3 kgf/cm 2
or bar)
Spare: 33 psi (230 kPa, 2.3 kgf/cm 2
or bar)
Wheel size 18  7 1 /2J
Wheel nut torque 76 ft•lbf (103 N•m, 10.5 kgf•m)

8086-1. Specifications
Ty p e C
Ty p e DTi r e s i z e P235/55R19 101V, T165/90D18 107M (spare)
Tire inflation pressure
(recommended cold tire
inflation pressure) Driving under normal conditions
Front: 33 psi (230 kPa, 2.3 kgf/cm 2
or bar)*
Rear: 33 psi (230 kPa, 2.3 kgf/cm 2
or bar)*
Spare: 60 psi (420 kPa, 4.2 kgf/cm 2
or bar)*: When driving at high speeds above 100 mph (160
km/h), in countries where such speeds are permitted by
law, add 3 psi (20 kPa, 0.2 kgf/cm 2
or bar) to the tires.
Never exceed the maximum cold tire inflation pressure
indicated on the tire sidewall.
Wheel size 19  7 1 /2J, 18  4T (spare)
Wheel nut torque 76 ft•lbf (103 N•m, 10.5 kgf•m)
Ti r e s i z e P235/55R19 101V
Tire inflation pressure
(recommended cold tire
inflation pressure) Driving under normal conditions
Front: 33 psi (230 kPa, 2.3 kgf/cm 2
or bar)
Rear: 33 psi (230 kPa, 2.3 kgf/cm 2
or bar)
Spare: 33 psi (230 kPa, 2.3 kgf/cm 2
or bar)
When driving at high speeds above 100 mph (160 km/h),
in countries where such speeds are permitted by law,
add 3 psi (20 kPa, 0.2 kgf/cm 2
or bar) to the front tires
and rear tires. Never exceed the maximum cold tire
inflation pressure indicated on the tire sidewall.
Wheel size 19  7 1 /2J
Wheel nut torque 76 ft•lbf (103 N•m, 10.5 kgf•m)

8146-1. Specifications
Tire size (  P. 815)
DOT and Tire Identification Number (TIN) (  P. 815)
Location of treadwear indicators (  P. 670)
Tire ply composition and materials Plies are layers of rubber-coated parallel cords. Cords are the strands
which form the plies in a tire.
Radial tires or bias-ply tires A radial tire has “RADIAL” on the sidewall. A tire not marked “RADIAL” is
a bias-ply tire.
TUBELESS or TUBE TYPE A tubeless tire does not have a tube and air is directly put into the tire. A
tube type tire has a tube inside the ti re and the tube maintains the air pres-
sure.
Load limit at maximum cold tire inflation pressure (  P. 6 74 )
Maximum cold tire inflation pressure (  P. 8 0 7 )This means the pressure to which a tire may be inflated.
Uniform tire quality grading For details, see “Uniform tire quality grading” that follows.
Summer tire or all season tire (  P. 6 74 )An all season tire has “M+S” on the sidewall. A tire not marked “M+S” is a
summer tire.
“TEMPORARY USE ONLY” (  P. 772)A compact spare tire is identified by the phrase “TEMPORARY USE
ONLY” molded on its sidewall. This ti re is designed for temporary emer-
gency use only.

8156-1. Specifications
6
Vehicle specifications Typical DOT and tire identification number (TIN)
DOT symbol
*Tire Identificat ion Number (TIN)
Tire manufacturer's identifica-
tion mark
Tire size code
Manufacturer's optional tire
type code (3 or 4 letters)
Manufacturing week
Manufacturing year
* : The DOT symbol certifies that
the tire conforms to applicable
Federal Motor Vehicle Safety
Standards.
Tire size
■ Typical tire size information
The illustration indicates typical
tire size.
Ti r e u s e
(P = Passenger car,
T = Temporary use)
Section width (millimeters)
Aspect ratio
(tire height to section width)
Tire construction code
(R = Radial, D = Diagonal)
Wheel diameter (inches)
Load index (2 digits or 3 digits)
Speed symbol
(alphabet with one letter)

8206-1. Specifications
Tire related term Meaning
Occupant distribution Distribution of occupants in a vehicle as specified in
the third column of Table 1
* below
Production options
weight The combined weight of installed regular production
options weighing over 5 lb. (2.3 kg) in excess of the
standard items which they replace, not previously
considered in curb weight or accessory weight,
including heavy duty brakes, ride levelers, roof rack,
heavy duty 12-volt battery, and special trim
Rim A metal support for a tire or a tire and tube assembly
upon which the tire beads are seated
Rim diameter
(Wheel diameter) Nominal diameter of the bead seat
Rim size designation Rim diameter and width
Rim type designation The industry manufacturer's designation for a rim by
style or code
Rim width Nominal distance between rim flanges
Vehicle capacity weight
(Total load capacity) The rated cargo and luggage load plus 150 lb. (68
kg) times the vehicle's designated seating capacity
Vehicle maximum load on
the tire The load on an individual tire that is determined by
distributing to each axle its share of the maximum
loaded vehicle weight, and dividing by two
Vehicle normal load on
the tire The load on an individual tire that is determined by
distributing to each axle its share of curb weight,
accessory weight, and normal occupant weight (dis-
tributed in accordance with Table 1
* below), and
dividing by two
We a t h e r s i d e The surface area of the rim not covered by the
inflated tire

8376
Vehicle specifications 6-3. Initialization
Items to initialize Item When to initialize Reference
Power back door • After reconnecting or changing the
12-volt battery
• After changing a fuse P. 7 5
Maintenance data
(U.S.A. only) After the maintenance is performed P. 6 4 1
Tire pressure warning
system • When rotating the tires
• When changing tire pressure (such
as when changing traveling speed,
load weight, etc.)
• When changing the tire size P. 6 7 1The following items must be initialized for normal system operation in cases
such as after the 12-volt battery is reconnected, or maintenance is per-
formed on the vehicle.

871Alphabetical index
Tachometer .............................................. 197
Tail lights
Replacing light bulbs ....................... 708
Switch ........................................................ 217
Wattage ................................................ 809
Talk switch*.................................. 429, 553
Telephone* .................................. 429, 552
Telephone switch* .................... 429, 553
Theft deterrent system
Alarm ......................................................... 126
Immobilizer system ............................ 124
Theft prevention labels ........................ 129
Tire inflation pressure..........................679
Tire information
Glossary ..................................................819
Size ............................................................ 815
Tire identification number .............. 815
Uniform tire quality grading........... 817
Tires
Chains ..................................................... 302
Checking ............................................... 670
If you have a flat tire.......................... 764
Inflation pressure ............................... 679
Inflation pressure sensor.................. 671
Information..............................................813
Replacing............................................... 764
Rotating tires ........................................ 670
Size ........................................................... 807
Snow tires.............................................. 302
Spare tire ............................................... 764
Tire pressure warning
system...................................... 670, 736 Tools ........................................................... 764
Total load capacity ................................ 301
Towing
Dinghy towing ..................................... 324
Emergency towing............................ 725
Trailer towing ...................................... 306
TRAC...........................................................271
Traction control .......................................271
Trailer towing ............................. 306, 323
Trip information display......................206
Trip meter ..................................................197
Turn signal lights
Replacing light bulbs ....................... 708
Switch........................................................ 193
Wattage ................................................. 809T
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.