6-1. Specifications
Typ ic al t ire sy m bo ls
Tire size (P. 383)
DOT and Tire Identification Number (TIN) (P. 382)
Location of tread wear indicators (P. 384)
Tire ply composition and materials
Plies are layers of rubber-coated parallel cords. Cords are the strands
which form the plies in a tire.
Summer tire or all season tire (P. 297)
An all season tire has “M+S” on the sidewall. A tire not marked “M+S” is a
summer 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 maintains the air pres-
sure.
Load limit at maximum cold tire inflation pressure (P. 386)
Maximum cold tire inflation pressure (P. 386)
This means the pressure to which a tire may be inflated.