Section Width115 mm (4.5")
Aspect Ratio409%
Rim Diameter38"
Overall Diameter1906 mm (75.0")
Sidewall Height470 mm
Circumference5988 mm
115/409R38 — Buy Tires

Everything to know about the 115/409R38 tire size

Size geometry

A 115/409R38 tire has a 115mm section width and a 409% aspect ratio, mounted on a 38-inch rim. Sidewall height works out to 470.4mm (18.52") and overall outside diameter is 1905.9mm (75.04"). At highway speed the tire completes about 167 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 115/409R38 is unavailable, the closest same-diameter substitutes on the same rim are 105/448R38 and 125/376R38. Both keep your speedometer reading within 1% — safe for daily use, ABS, and stability control. Always verify load and speed ratings before swapping.

Plus / minus sizing options

For a 115/409R38 you can upsize to 125/366R39 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 105/460R37 (minus-one) for a softer ride or winter setup. Both stay inside the Âą3% diameter tolerance that ABS and TPMS systems expect.

Vehicle compatibility

0 vehicles in our database run the 115/409R38 tire size from the factory. Aftermarket fitment depends on rim width, offset, and clearance — match these specs to your wheel before purchasing tires.

Vehicles Using 115/409R38

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