Toyota 2012 Highlander Owner's Manual page 564

Tire ply composition and materials
Plies are layers of rubber-coated parallel cords. Cords are the
strands which form the plies in a tire.
Radial tires or bias-ply tires
A radial tire has "RADIAL" on the sidewall. A tire not marked
"RADIAL" is a bias-ply tire.
TUBELESS or TUBE TYPE
A tubeless tire does not have a tube and air is directly filled in the
tire. A tube type tire has a tube inside the tire and the tube main-
tains the air pressure.
Load limit at maximum cold tire inflation pressure
Maximum cold tire inflation pressure
This means the pressure to which a tire may be inflated.
Summer tire or all season tire
An all season tire has "M+S" on the sidewall. A tire not marked
"M+S" is a summer tire.
6-1. Specifications
(→P. 482)
(→P. 584)
(→P. 483)
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