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502 6−1. Specifications
Tires and wheels
Tire sizeP285/60R18 114V
Tire inflation pressure
(Recommended cold tire
inflation pressure)Normal driving
Front tires:
33 psi (230 kPa, 2.3 kgf/cm
2 or bar)
Rear tires:
33 psi (230 kPa, 2.3 kgf/cm
2 or bar)
Spare tire:
33 psi (230 kPa, 2.3 kgf/cm
2 or bar)
Trailer towing
Front tires:
33 psi (230 kPa, 2.3 kgf/cm
2 or bar)
Rear tires:
33 psi (230 kPa, 2.3 kgf/cm
2 or bar)
Spare tire:
33 psi (230 kPa, 2.3 kgf/cm
2 or bar)
Wheel size 18
8 J
Wheel nut torque
97 ftlbf (131 Nm, 13.4 kgfm)
Page 502 of 531
509
6−1. Specifications
6
Vehicle specifications
Tire size
nTypical 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 or 3 digits)
Speed symbol
(alphabet with one letter)
nTire dimensions
Section width
Tire height
Wheel diameter
P285/60R18 11 4V
ITY61C011
ITY61C012
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513
6−1. Specifications
6
Vehicle specifications
Tire related term Meaning
Normal occupant
weight150 lb. (68 kg) times the number of occupants
specified in the second column of Table 1
* that
follows
Occupant distributionDistribution of occupants in a vehicle as speci−
fied in the third column of Table 1
* below
Production options
weightThe combined weight of installed regular pro−
duction 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 designation Rim diameter and width
Rim type designationThe 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 designated seating
capacity
Vehicle maximum load
on the tire
The load on an individual tire that is determined
by distributing to each axle its share of the
maximum loaded vehicle weight, and dividing
by two