tires LEXUS RX350 2016 Workshop Manual

6819-1. Specifications
9
Vehicle specifications
RX350_U_OM48E90U 
Ty p e B Ti r e s i z e 235/55R20 102V, T165/90D18 107M (spare)
Tire inflation pressure
(Recommended cold tire
inflation pressure) 
Front tire
33 psi (230 kPa, 2.3 kgf/cm 2
or bar) 
Rear tire
33 psi (230 kPa, 2.3 kgf/cm 2
or bar) 
Spare tire
60 psi (420 kPa, 4.2 kgf/cm 2
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/cm 2
or bar) to the
front and rear tires. Never exceed the maximum
cold tire inflation pressure indicated on the tire
sidewall.
Wheel size 20  8 J, 18  4 T (spare)
Wheel nut torque 76 ft•lbf (103 N•m, 10.5 kgf•m)

6879-1. Specifications
9
Vehicle specifications
RX350_U_OM48E90U Ti r e s i z e (  P. 6 8 9 )
DOT and Tire Identification Number (TIN) (  P. 6 8 8 )
Location of treadwear indicators (  P. 5 8 4 )
Tire ply composition and materials Plies are layers of rubber-coated parallel co rds. 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. 5 8 7 )
Maximum cold tire inflation pressure (  P. 6 8 0 )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. 5 8 8 )An all season tire has “M+S” on the sidewall. 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 desi gned for temporary emergency use only.1
2
3
4
5
6
7
8
9
10
11

6919-1. Specifications
9
Vehicle specifications
RX350_U_OM48E90U This information has been prepared in acco rdance with regulations issued by the
National Highway Traffic Safety Administration of the U.S. Department of Trans-
portation.
It provides the purchasers and/or prospective purchasers of Lexus vehicles with
information on uniform tire quality grading.Your Lexus dealer will help answer any questions 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 grad es can be found where applicable on
the tire sidewall between tread shoulder and maximum section width. For example: Treadwear 200 Traction AA Temperature A■
Tr e a d w e a r
The treadwear grade is a comparative rati ng based on the wear rate of the tire
when tested under controlled conditions 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 actual conditions of their use.
Performance may differ significantly from the norm due to variations in driving
habits, service practices and differences in road characteristics and climate.■
Tr a c t i o n A A , 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 we t pavement as measured under controlled
conditions on specified government te st surfaces of asphalt and concrete.A tire marked C may have poor traction performance.
Warning: The traction grade assigned to th is tire is based on braking (straight
ahead) traction tests and does not include cornering (turning) traction.Uniform Tire Quality Grading

692 9-1. Specifications
RX350_U_OM48E90U ■
Temperature A, B, C
The temperature grades are A (the highes t), 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 material 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, underinflation, or excessiv e loading, either separately or in com-
bination, can cause heat buildup and possible tire failure.

712
RX350_U_OM48E90U 9-3. Initialization
Items to initialize The following items must be initialized for normal system operation after such
cases as the battery being reconnecte d, or maintenance being performed on
the vehicle. Item When to initialize Reference
Message indicating mainte-
nance is required (U.S.A. only) • After the maintenance is per-
formed P. 5 6 5
Tire pressure warning system • When changing the tire inflation
pressure by changing traveling
speed
• When changing the tire size
• When rotating the tires P. 5 8 6
Oil maintenance • After the maintenance is per-
formed P. 5 7 7
Power back door • After reconnecting or changing
the battery P. 1 3 8

742 Alphabetical index
RX350_U_OM48E90U Rear side marker lights
Light switch .............................................241
Replacing light bulbs ......................... 610
Rear turn signal lights
Replacing light bulbs ......................... 610
Turn signal lever ................................. 234
Wattage ................................................. 682
Rear view mirror
Inside rear view mirror ....................... 171
Outside rear view mirrors ...............173
Rear window defogger ......................500
Rear window wiper.............................. 256
Refueling .................................................. 258
Capacity .................................................676
Fuel types ...............................................676
Opening the fuel tank cap............ 258
When the fuel filler door
cannot be opened ........................ 260
Remote Touch
* ....................................488
Replacing
Electronic key battery ..................... 603
Fuses........................................................ 605
Light bulbs .............................................. 610
Tires ......................................................... 646
Windshield wiper inserts ................ 601
Reporting safety defects for
U.S. owners............................................ 714
Resetting the message indicating
maintenance is required ................ 565
Rev indicator ............................................. 87
Rev peak ..................................................... 87 S-FLOW mode......................................496
Seat belts .................................................... 30
Automatic Locking Retractor .........32
Child restraint system
installation ............................................. 57
Cleaning and maintaining the
seat belt ............................................... 562
Emergency Locking Retractor .......32
How to wear your seat belt............. 30
How your child should
wear the seat belt ...............................32
Pregnant women, proper seat
belt use ................................................... 33
Reminder light and buzzer ........... 636
Seat belt extender .................................32
Seat belt instructions for
Canadian owners ............................ 715
Seat belt pretensioners ........................ 31
SRS warning light .............................. 634
Seat position memory .......................... 162
Seat ventilators...................................... 507
Seating capacity ................................... 204 S

743Alphabetical index
RX350_U_OM48E90U Seats
Adjustment ............................................. 152
Adjustment precautions .................. 152
Child seats/child restraint
system installation.............................. 57
Cleaning .................................................. 561
Driving position memory ................ 162
Folding down the rear
seatbacks ............................................. 153
Front seat heaters ............................. 506
Head restraint ........................................167
Power easy access system ............ 162
Properly sitting in the seat ................ 28
Rear seat heaters .............................. 507
Seat position memory....................... 162
Seat ventilators ................................... 507
Sensor
Automatic headlight system ......... 243
Camera sensor ................................... 264
Inside rear view mirror ...................... 172
Intuitive parking assist ..................... 330
Radar sensor ........................................264
Rain-sensing windshield
wipers ................................................... 252
Touchless sensor .................................132 Service reminder indicators ............... 80
Shift lever ...................................... 225, 229
Side airbags ................................................ 37
Side doors ................................................. 124
Side marker lights
Light switch............................................. 241
Replacing light bulbs ........................ 610
Side mirrors .............................................. 173
Adjusting and folding ........................ 173
BSM (Blind Spot Monitor) ...........355
Side turn signal lights
Replacing light bulbs ........................ 610
Turn signal lever ................................. 234
Smart access system with
push-button start................................. 146
Antenna location..................................146
Entry functions ........................... 124, 130
Starting the engine ............................ 220
Snow tires ................................................ 382
Spare tire
Inflation pressure............................... 680
Storage location ................................. 647
* : Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.

746 Alphabetical index
RX350_U_OM48E90U Tires............................................................ 584
Chains....................................................... 381
Checking............................................... 584
Glossary ................................................ 693
If you have a flat tire ......................... 646
Inflation pressure .................. 593, 680
Replacing .............................................. 646
Rotating tires ....................................... 584
Size ........................................................... 680
Snow tires ............................................. 382
Spare tire ...................................646, 680
Tire identification number............. 688
Tire pressure warning system .... 585
Uniform Tire Quality
Grading................................................ 691
Warning light ...................................... 636
Tools........................................................... 647
Top tether strap.......................................... 71
Total load capacity ............................... 674
Touchless power back door ..............132
Towing
Dinghy towing ...................................... 219
Emergency towing ............................626
Towing eyelet.......................................629
Trailer Sway Control ........................375
Trailer towing ............................205, 218
TRAC (Traction Control) ................. 374
Traction Control (TRAC) ................. 374
Trailer Sway Control........................... 375
Trailer towing ...............................205, 218 Transmission
Automatic transmission ...... 225, 229
Driving mode select switch .......... 369
If the shift lever cannot be
shifted from P .................................. 660
M mode .................................................... 231
Paddle shift switches..............230, 231
S mode.................................................... 226
Trip meters ................................................103
Turn signal lights
Replacing light bulbs ........................ 610
Turn signal lever ................................. 234
Wattage ................................................. 682
USB memory ......................................... 433
USB port .................................................. 399
Vanity lights ............................................ 523
Wattage ................................................. 682
Vanity mirrors........................................ 523
Vanity lights .......................................... 523
VDIM (Vehicle Dynamics
Integrated Manag ement)...............375
Vehicle data recordings...........................9
Vehicle Dynamics Integrated
Management (VDIM)......................375
Vehicle identification number .........675
Vehicle Stability Control (VSC) .....374
Voice command system......................481
VSC (Vehicle Stability Control) ..... 374 U
V