tire size Lexus IS F 2009 User Guide

411
6-1. Specifications
6
Vehicle specifications
08_IS F_U_(L/O_0808)
Steering
Tires and wheels
Free playLess than 1.2 in. (30 mm)
Ti r e s i z e
Front: 225/40R19 93Y
Rear: 255/ 35R19 96Y
Spare: T135/70R18 103M
Front and rear tire inflation pres-
sure
(Recommended cold tire inflation
pressure)
Front:
36 psi (250 kPa, 2.5 kgf/cm2 or bar)*
Rear:
36 psi (250 kPa, 2.5 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 9.0 psi (60 kPa, 0.6 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
Front wheels: 19 × 8J
Rear wheels: 19 × 9J
Spare wheel: 18 × 4T
Wheel nut torque76 ft•lbf (103 N•m, 10.5 kgf•m)

416
6-1. Specifications
08_IS F_U_(L/O_0808)
Tire information
Ty p i c a l t i r e s y m b o l s
Standard tire
Compact spare tire
Tire size (→P. 4 1 8 )
DOT and Tire Identification Number (TIN) (→ P. 4 1 8 )
Location of treadwear indicators (→ P. 300)
Tire ply composition and materials
Plies are layers of rubber-coated parallel cords. Cords are the strands
which form the plies in a tire.

418
6-1. Specifications
08_IS F_U_(L/O_0808)
Typical DOT and tire iden tification number (TIN)
DOT symbol
*
Tire Identification 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 thatthe 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)

422
6-1. Specifications
08_IS F_U_(L/O_0808)
Curb weight
The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil and
coolant, and if so equipped, air conditioning and
additional weight optional engine
Maximum loaded vehicle
weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight150 lb. (68 kg) times the number of occupants speci-
fied in the second column of Table 1
* that follows
Occupant distributionDistribution 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 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 designated seating capacity
Tire related termMeaning

450
Alphabetical index
08_IS F_U_(L/O_0808)
Tachometer....................................................131
Tail lights
Switch ........................................................ 142
Talk switch*
Telephone switch*
Theft deterrent system
Alarm ...........................................................73
Engine immobilizer system ............... 71
Theft prevention labels .......................... 75
Tire inflation pressure ............................311
Tire information Glossary................................................... 421
Size ............................................................ 418
Tire identification number .............. 418
Uniform tire quality grading ...........419
Tires
Chains ...................................................... 184
Checking .............................................. 300
If you have a flat tire.......................... 379
Inflation pressure....................................311
Inflation pressure sensor............... 300
Information..............................................416
Replacing............................................... 379
Rotating tires ........................................305
Size ...............................................................411
Snow tires ............................................... 184
Tools ........................................................... 379
Total load capacity ................................ 183
Towing Dinghy towing .......................................187
Emergency towing ........................... 345
Trailer towing........................................ 186 TRAC ..........................................................169
Traction control.......................................169
Transmission shift switches....... 122, 124
Trip meter ................................................... 131
Trunk
Extending a space .............................249
Opener ........................................................41
Trunk light
Trunk light ................................................. 42
Wattage ................................................... 412
Turn signal lights Replacing light bulbs ....................... 338
Switch........................................................ 128
Wattage ................................................... 412
Vanity lights Vanity lights.......................................... 238
Wattage ................................................... 412
Vanity mirrors ........................................ 238
VDIM...........................................................169
Vehicle dynamics integrated management .........................................169
Vehicle identification number ......... 403
Vehicle stability control .......................169
VSC .............................................................169T
V