2018 LEXUS RX450h wheel size

718 9-1. Specifications
RX450h_RX450hL _U_OM48F85U 
Type B Tire size 235/55R20 102V, T165/90D18 107M (spare)
Tire inflation pressure
(Recommended cold tire
inflation pressure) RX450h:
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 pressu re indicated on the tire
sidewall.
RX450hL:
Front tire
35 psi (240 kPa, 2.4 kgf/cm 2
or bar)
Rear tire
35 psi (240 kPa, 2.4 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 9 psi (62 kPa, 0.6 kgf/cm 2
or bar) to the
front and rear tires. Never exceed the maximum
cold tire inflation pressu re 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)

726 9-1. Specifications
RX450h_RX450hL _U_OM48F85U■
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 dimensions
Section width
Tire height
Wheel diameterTire size 1
2
3
4
5
6
7
1
2
3

7319-1. Specifications
9
Vehicle specifications
RX450h_RX450hL _U_OM48F85UProduction options weight The combined weight of in stalled 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 leve lers, 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 desi gnated seating capacity
Vehicle maximum load on
the tire The 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 side The surface area of the rim not covered by the inflated
tire
Bead The part of the tire that is made of steel wires, wrapped
or reinforced by ply cords an d that is shaped to fit the
rimTire related term Meaning

790 Alphabetical index
RX450h_RX450hL _U_OM48F85UWarning buzzers
Approach warning ............................. 314
Downshifting ........................................249
Intuitive parking assist ......................336
Lane departure alert function ..... 298
Light reminder .................................... 260
Open door ............................................. 140
Pre-collision warning .......................287
Seat belt reminder .............................662
Vehicle sway warning .....................299
Warning lights
ABS............................................................ 661
Brake hold operated
indicator ............................................... 661
Brake system....................................... 660
Charging system............................... 660
Electric power st eering.................... 661
ICS OFF indicator.............................662
LKA indicator........................................ 661
Low fuel level .......................................662
Malfunction indicator lamp .......... 660
Master warning light........................ 663
Parking brake indicator ................... 661
PCS warning light .............................662
Seat belt reminder light...................662
Slip indicator .......................................... 661
SRS ........................................................... 660
Tire pressure ........................................662 Warning messages............................... 667
Washer
Checking ...............................................604
Low washer fluid
warning message...............604, 667
Preparing and checking
before winter ....................................390
Switch ........................................... 267, 272
Washing and waxing .......................... 580
Weights
Cargo capacity.........................220, 710
Load limits ................................... 223, 710
Weights ....................................................710
Wheels ......................................................623
Replacing wheels .............................. 623
Size ............................................................. 717
Window glasses...................................... 196
Window lock switch.............................. 196
Windows
Power windows....................................196
Rear window defogger ....................516
Washer ........................................ 267, 272
Windshield wiper de-icer ................... 516
Windshield wiper inserts .................. 628
Windshield wipers ................................ 267
Rain-sensing windshield
wipers................................................... 267
Replacing a windshield wiper
insert ..................................................... 628W