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480/80R38 tire size

Tractor drive tire, about 68.7 in (1,744 mm) tall.

What 480/80R38 means

480 mm nominal section width, 80 aspect ratio, R radial, for a 38-inch rim.

Dimensions

Overall diameter
68.7 in (1,744 mm)
Static loaded radius
30.9 in (786 mm)
Rolling circumference
205.0 in (5,207 mm)
RCI group
45 (about 70 in tall, rolling circumference ≈ 207 in)

Continental Agricultural Tires Technical Databook (measured values) and the Firestone Rolling Circumference Index chart.

Equivalent sizes

Same height and width, same 38" rim: 460/85R38, 18.4R38.

600 mm (24.5")
600/65R38
520 mm (20.8")
520/70R38

Same height, other width — keeps front axle lead/lag about the same; needs the right rim width.

Full conversion →

Sources: Continental Agricultural Tires Technical Databook, Firestone Ag RCI chart, Firestone hydroinflation tables. Checked October 2026. How we source data.

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