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Radial tires or bias-ply tires
A radial tire has RADIAL on the sidewall. A tire not marked RADIAL
is a bias-ply tire.
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.
Typical DOT and tire identification number (TIN)
6-1. Specifications
*
DOT symbol
Tire
Identification
(TIN)
Tire manufacturer's identifica-
tion mark
Tire size code
Manufacturer's optional tire
type code (3 or 4 letters)
Manufacturing week
Manufacturing year
*
: The DOT symbol certifies
that the tire conforms to
applicable
Federal
Vehicle Safety Standards.
(P. 419)
Number
Motor
529
6
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