Tire related term Meaning
Tread separation Pulling away of the tread from the tire car-
cass
Treadwear indicators (TWI) The projections within the principal grooves
designed to give a visual indication of the
degrees of wear of the tread
Wheel-holding fixture The fixture used to hold the wheel and tire
assembly securely during testing
(1)
Table 1—Occupant loading and distribution for vehicle normal load for various desig-
nated seating capacities
Designated seating capaci-
ty, Number of occupants
Vehicle normal load, Num-
ber of occupants
Occupant distribution in a
normally loaded vehicle
2 through 4 2 2 in front
5 through 10 3 2 in front, 1 in second seat
11 through 15 5 2 in front, 1 in second seat, 1
in third seat, 1 in fourth seat
16 through 20 7 2 in front, 2 in second seat,
2 in third seat, 1 in fourth
seat
10-1. Specifications
700
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