Section Width315 mm (12.4")
Aspect Ratio38%
Rim Diameter25"
Overall Diameter874 mm (34.4")
Sidewall Height120 mm
Circumference2747 mm
315/38R25 — Buy Tires

Everything to know about the 315/38R25 tire size

Size geometry

A 315/38R25 tire has a 315mm section width and a 38% aspect ratio, mounted on a 25-inch rim. Sidewall height works out to 119.7mm (4.71") and overall outside diameter is 874.4mm (34.43"). At highway speed the tire completes about 364 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 315/38R25 is unavailable, the closest same-diameter substitutes on the same rim are 305/39R25 and 325/37R25. 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 315/38R25 you can upsize to 325/33R26 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 305/43R24 (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 315/38R25 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 315/38R25

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