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Tread Codes Explained

Until tire manufacturers invent the magic "do-it-all" tire, it is of utmost importance to select the ideal tire for a given application. At best, an incorrect tire will simply wear at an excessive rate. At worst, the wrong tire will render the equipment completely useless.

Fortunately, tire manufacturers build tires according to categories that have been designated by the Tire and Rim Industry. These categories provide a great basic understanding of the conditions and applications that a tire is best suited. Below we will give a breakdown of the codes, general descriptions, and a sample pictures to help you better understand these categories. 


R-1

DRIVE POSITION

REGULAR TREAD

GENERAL FARMING

R-1W

DRIVE POSITION

WET TRACTION TREAD

WET OR MOIST SOIL

R-2

DRIVE POSITION

RICE & CANE, DEEP TREAD

WET OR MOIST SOIL

R-3

DRIVE POSITION

SHALLOW TREAD

MOWING, HIGHWAYS, ORCHARDS

R-4

DRIVE POSITION

BAR TREAD

INDUSTRIAL SERVICE

F-1

AGRICULTURAL STEER

SINGLE RIB TREAD

RICE FARMING

F-2

AGRICULTURAL STEER

THREE RIB TREAD

GENERAL FARMING

F-2M

AGRICULTURAL STEER

FOUR RIB TREAD

GENERAL FARMING

F-3

AGRICULTURAL STEER

MULTI RIB TREAD

LIGHT INDUSTRIAL SERVICE

I-1

FREE ROLLING

MULTI RIB TREAD

IMPLEMENT

I-3

DRIVE WHEEL

TRACTION TREAD

IMPLEMENT

FI

FREE ROLLING

MULTI RIB TREAD

HIGHWAY RATED IMPLEMENT

E-2

EARTHMOVER

TRACTION TREAD

100% TREAD DEPTH

E-3

EARTHMOVER

ROCK TREAD

100% TREAD DEPTH

E-4

EARTHMOVER

DEEP ROCK TREAD

150% TREAD DEPTH

E-7

PAVER

FLOTATION TREAD

80% TREAD DEPTH

L-2

LOADER & DOZER

TRACTION TREAD

100% TREAD DEPTH

L-3

LOADER & DOZER

ROCK TREAD

100% TREAD DEPTH

L-4

LOADER & DOZER

ROCK DEEP TREAD

150% TREAD DEPTH

L-5

LOADER & DOZER

ROCK EXTRA DEEP TREAD

250% TREAD DEPTH

L-5S

LOADER & DOZER

SMOOTH EXTRA DEEP TREAD

250% TREAD DEPTH

G-2

GRADER

TRACTION TREAD

100% TREAD DEPTH

G-3

GRADER

ROCK TREAD

100% TREAD DEPTH