Section Width915 mm (36.0")
Aspect Ratio13%
Rim Diameter31"
Overall Diameter1025 mm (40.4")
Sidewall Height119 mm
Circumference3221 mm
915/13R31 — Buy Tires

Everything to know about the 915/13R31 tire size

Size geometry

A 915/13R31 tire has a 915mm section width and a 13% aspect ratio, mounted on a 31-inch rim. Sidewall height works out to 119.0mm (4.68") and overall outside diameter is 1025.3mm (40.37"). At highway speed the tire completes about 310 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 915/13R31 is unavailable, the closest same-diameter substitutes on the same rim are 905/13R31 and 925/13R31. 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 915/13R31 you can upsize to 925/11R32 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 905/15R30 (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 915/13R31 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 915/13R31

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