Section Width275 mm (10.8")
Aspect Ratio174%
Rim Diameter38"
Overall Diameter1922 mm (75.7")
Sidewall Height479 mm
Circumference6039 mm
275/174R38 — Buy Tires

Everything to know about the 275/174R38 tire size

Size geometry

A 275/174R38 tire has a 275mm section width and a 174% aspect ratio, mounted on a 38-inch rim. Sidewall height works out to 478.5mm (18.84") and overall outside diameter is 1922.2mm (75.68"). At highway speed the tire completes about 166 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 275/174R38 is unavailable, the closest same-diameter substitutes on the same rim are 265/181R38 and 285/168R38. 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 275/174R38 you can upsize to 285/163R39 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 265/185R37 (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 275/174R38 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 275/174R38

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