tire size LEXUS RX450H 2020 Owner's Manual

7059-1. Specifications
9
Vehicle specifications
RX350/RX350L_U
Type B
A: Wedge base bulbs (amber)B: Wedge base bulbs (clear)
*1: Vehicles with single-beam headlights
*2: Vehicles without door trim ornament lights
Tire size235/55R20 102V, T165/90D18 107M (spare)
Tire inflation pressure
(Recommended cold tire
inflation pressure)
Front tire
33 psi (230 kPa, 2.3 kgf/cm2 or bar)
Rear tire
33 psi (230 kPa, 2.3 kgf/cm2 or bar)
Spare tire
60 psi (420 kPa, 4.2 kgf/cm2 or bar)
Driving at high speeds (above 100 mph [160 km/h])
(in countries where such speeds are permitted by
law)
Add 11 psi (70 kPa, 0.7 kgf/cm2 or bar) to the
front and rear tires. Never exceed the maximum
cold tire inflation pressu re indicated on the tire
sidewall.
Wheel size20  8 J, 18  4 T (spare)
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)
Light bulbs
Light bulbsBulb No.WType
Exterior
Front side marker lights*15B
Front turn signal lights*17444NA28/8A
Rear turn signal lights*121A
Back-up lights921 16B
Interior
Door courtesy lights*25B
Vanity lights8B
Luggage compartment light5B

7099-1. Specifications
9
Vehicle specifications
RX350/RX350L_U
Full-size tire
Compact spare tire
Tire information
Typical tire symbols

7109-1. Specifications
RX350/RX350L_U
Tire size ( P. 712)
DOT and Tire Identification Number (TIN) ( P. 711)
Location of treadwear indicators (P. 604)
Tire ply composition and materials
Plies are layers of rubber-c oated 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 tire and the tube maintains the air pressure.
Load limit at maximum cold tire inflation pressure ( P. 608)
Maximum cold tire inflation pressure ( P. 704)
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 tires or all season tires ( P. 608)
An all season tire has “M+S” on the side wall. A tire not marked “M+S” is a summer
tire.
“TEMPORARY USE ONLY”
A compact spare tire is identified by the phrase “TEMPORARY USE ONLY” molded
on its sidewall. This tire is designed for temporary emergency use only.
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2
3
4
5
6
7
8
9
10
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7119-1. Specifications
9
Vehicle specifications
RX350/RX350L_U
DOT symbol*
Tire Identification Number (TIN)
Tire manufacturer’s identification mark
Tire size code
Manufacturer’s optional tire type code (3 or 4 letters)
Manufacturing week
Manufacturing year
Manufacturer's code
*: The DOT symbol certifies that the tire conforms to applicable Federal Motor Vehicle
Safety Standards.
Typical DOT and Tire Identification Number (TIN)
Type AType B
1
2
3
4
5
6
7
8

7129-1. Specifications
RX350/RX350L_U
■Typical tire size information
The illustration indicates typical tire size. Tire use
(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)
■Tire dimensionsSection width
Tire height
Wheel diameter
Tire size
1
2
3
4
5
6
7
1
2
3

7179-1. Specifications
9
Vehicle specifications
RX350/RX350L_U
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 re place, not previously con-
sidered in curb weight or accessory weight, including
heavy duty brakes, ride levelers, roof rack, heavy duty
battery, and special trim
RimA 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 designationRim diameter and width
Rim type designationThe industry manufacturer’s designation for a rim by
style or code
Rim widthNominal 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 desi gnated seating capacity
Vehicle maximum load on
the tireThe load on an individual tire that is determined by dis-
tributing 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 dis-
tributing to each axle its sh are of curb weight, accessory
weight, and normal occupant weight (distributed in
accordance with Table 1
* below), and dividing by two
Weather sideThe surface area of the rim not covered by the inflated
tire
BeadThe part of the tire that is made of steel wires, wrapped
or reinforced by ply cords an d that is shaped to fit the
rim
Tire related termMeaning

735
RX350/RX350L_U
9
Vehicle specifications
9-3. Initialization
*:If equipped
Items to initialize
The following items must be initialized for normal system operation after such
cases as the battery being reconnected, or maintenance being performed on
the vehicle.
ItemWhen to initializeReference
Message indicating mainte-
nance is required (U.S.A. only)• After the maintenance is per- formedP. 585
Tire pressure warning system
• When changing the tire inflationpressure by changing traveling
speed
• When changing the tire size
• When rotating the tires
P. 606
Oil maintenance• After the maintenance is per- formedP. 597
Intelligent Clearance Sonar
(ICS)
*
• After reconnecting or changingthe batteryP. 347
Power back door• After reconnecting or changingthe batteryP. 138

773Alphabetical index
RX350/RX350L_U
Tachometer ............................................... 86
Tail lightsLight switch ........................................... 252
Replacing light bulbs ....................... 630
Talk switch ....................................465, 487
Telephone switch.................................. 465
Theft deterrent system Alarm........................................................... 77
Engine immobilizer system.............. 74
Tire inflation pressure Maintenance data ..............................704
Warning light ...................................... 656
Tire information ..................................... 709 Glossary ...................................................716
Size .............................................................. 712
Tire identification number................. 711
Uniform Tire Quality Grading.................................................714
Tire pressure warning system Initializing............................................... 605
Installing tire pressure warning valves and transmitters ............... 605
Registering ID codes ...................... 606
Warning light ...................................... 656 Tires ........................................................... 604
Chains .....................................................385
Checking ...............................................604
Glossary................................................... 716
If you have a flat tire ..........................666
Inflation pressure......................613, 704
Replacing ...............................................666
Rotating tires ........................................604
Size ........................................................... 704
Snow tires ..............................................386
Spare tire....................................666, 704
Tire identification number ................. 711
Tire pressure warning system .... 605
Uniform Tire Quality Grading ................................................ 714
Warning light .......................................656
Tools ........................................................... 667
Top tether strap ........................................70
Total load capacity............................... 698
Touchless power back door .............. 132
Towing Dinghy towing ..................................... 230
Emergency towing ........................... 646
Towing eyelet ...................................... 649
Trailer Sway Control ....................... 378
Trailer towing............................. 215, 229
TRAC (Traction Control)................. 378
Traction Control (TRAC)................. 378
Trailer Sway Control .......................... 378
Trailer towing ................................215, 229
T