tire LEXUS RX450H 2020 Manual Online

697
9Vehicle specifications
RX350/RX350L_U
9-1. SpecificationsMaintenance data (fuel, oil level, etc.) ..................698
Fuel information.......................... 706
Tire information .......................... 709
9-2. Customization Customizable features ............ 722
9-3. Initialization Items to initialize ......................... 735

7049-1. Specifications
RX350/RX350L_U
*: Minimum pedal clearance when depressed wi th a force of 110 lbf (490 N, 50.0 kgf)
while the engine is running.
Type A
Brakes
Pedal clearance*3.4 in. (86 mm) Min.
Brake pad wear limit0.04 in. (1.0 mm)
Pedal free play0.04 — 0.24 in. (1.0 — 6.0 mm)
Fluid typeFMVSS No. 116 DOT 3 or SAE J1703
Steering
Free playLess than 1.2 in. (30 mm)
Tires and wheels
Tire size235/65R18 106V, 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 5 psi (30 kPa, 0.3 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 size18  8 J, 18  4 T (spare)
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)

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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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
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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
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7139-1. Specifications
9
Vehicle specifications
RX350/RX350L_U
Bead
Sidewall
Shoulder
Tread
Belt
Inner liner
Reinforcing rubber
Carcass
Rim lines
Bead wires
Chafer
Tire section names
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7149-1. Specifications
RX350/RX350L_U
This information has been prepared in acco rdance with regulations issued by the
National Highway Traffic Safety Administra tion of the U.S. Department of Trans-
portation.
It provides the purchasers and/or prospe ctive purchasers of Lexus vehicles with
information on uniform tire quality grading.
Your Lexus dealer will help answer any ques tions you may have as you read this infor-
mation.
■DOT quality grades
All passenger vehicle tires must conform to Federal Safety Requirements in
addition to these grades. Quality grades can be found where applicable on
the tire sidewall between tread shoulder and maximum section width.
For example: Treadwear 200 Traction AA Temperature A
■Treadwear
The treadwear grade is a comparative rati ng based on the wear rate of the tire
when tested under controlled conditio ns on a specified government test
course.
For example, a tire graded 150 would wear one and a half (1 - 1/2) times as well on
the government course as a tire graded 100.
The relative performance of tires depends upon the actua l conditions of their use.
Performance may differ significantly from the norm due to variations in driving
habits, service practices and difference s in road characteristics and climate.
■Traction AA, A, B, C
The traction grades, from highest to lowest, are AA, A, B and C, and they rep-
resent the tire’s ability to stop on wet pavement as measured under controlled
conditions on specified government test surfaces of asphalt and concrete.
A tire marked C may have poor traction performance.
Warning: The traction grade assigned to this tire is based on braking (straight
ahead) traction tests and does not include cornering (turning) traction.
Uniform Tire Quality Grading

7159-1. Specifications
9
Vehicle specifications
RX350/RX350L_U
■Temperature A, B, C
The temperature grades are A (the highest), B, and C, representing the tire’s
resistance to the generation of heat and its ability to dissipate heat when
tested under controlled conditions on a specified indoor laboratory test
wheel.
Sustained high temperature can cause the ma terial of the tire to degenerate and
reduce tire life, and excessive temperature can lead to sudden tire failure.
Grade C corresponds to a level of perfor mance which all passenger car tires must
meet under the Federal Motor Vehicle Safety Standard No. 109.
Grades B and A represent higher levels of performance on the laboratory test
wheel than the minimum required by law.
Warning: The temperature grades of a tire assume that it is properly inflated and
not overloaded.
Excessive speed, underi nflation, or excessive loading, either separately or in com-
bination, can cause heat buildup and possible tire failure.