Lexus IS250 2006 Owner's Manual page 416

6-1. Specifications
Tire related term
Production options
weight
Vehicle capacity weight
(Total load capacity)
Intended outboard side-
wall
Occupant distribution
Recommended inflation
pressure
Rim
Rim diameter
(Wheel diameter)
Rim size designation
Rim type designation
Rim width
398
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
The rated cargo and luggage load plus 150 lb. (68
kg) times the vehicle's designated seating capacity
(a) The sidewall that contains a whitewall, bears
white lettering, or bears manufacturer, brand,
and/or model name molding that is higher or
deeper than the same molding on the other side-
wall of the tire, or
(b) The outward facing sidewall of asymmetrical tire
that has a particular side that must always face
outward when mounted on a vehicle
Distribution of occupants in a vehicle as specified in
the third column of Table 1
Cold tire inflation pressure recommended by a man-
ufacturer.
A metal support for a tire or a tire and tube assembly
upon which the tire beads are seated
Nominal diameter of the bead seat
Rim diameter and width
The industry manufacturer's designation for a rim by
style or code
Nominal distance between rim flanges
Meaning
*
below