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TECH TIP — HOW TO MEASURE A TIRE Basic Tire Dimensions
Section Height
A Overall Diameter C
Rim Width D Rim Diameter
Section Width
B
Tire Sizes
Size designations consist of 2 or 3 numbers separated by X, - or / The designations for tires sold by Oregon® are explained below. All dimensions are for inflated tires.
Industrial Sizes C
B D
410/350-4 4.1"
3½" 4" OEP 778 Tires, Tubes, and Tire Chains