2013 Lexus GS 450h Owners Manual - Page 777

8-1. Specifications Tire related term Test rim Tread Tread rib Tread separation Treadwear indicators (TWI) Wheel-holding fixture Meaning The rim on which a tire is fitted for testing, and may be any rim listed as appropriate for use with that tire That portion of a tire that comes into contact with the road A tread section running circumferentially around a tire Pulling away of the tread from the tire carcass The projections within the principal grooves designed to give a visual indication of the degrees of wear of the tread The fixture used to hold the wheel and tire assembly securely during testing *: Table 1 ⎯ Occupant loading and distribution for vehicle normal load for various designated seating capacities Designated seating capacity, Number of occupants 2 through 4 5 through 10 11 through 15 Vehicle normal load, Number of occupants 2 3 5 Occupant distribution in a normally loaded vehicle 2 in front 2 in front, 1 in second seat 2 in front, 1 in second seat, 1 in third seat, 1 in fourth seat 2 in front, 2 in second seat, 2 in third seat, 1 in fourth seat 16 through 20 7 GS450h_U (OM30D01U)