Section Width625 mm (24.6")
Aspect Ratio10%
Rim Diameter31"
Overall Diameter912 mm (35.9")
Sidewall Height63 mm
Circumference2866 mm
625/10R31 — Buy Tires

Everything to know about the 625/10R31 tire size

Size geometry

A 625/10R31 tire has a 625mm section width and a 10% aspect ratio, mounted on a 31-inch rim. Sidewall height works out to 62.5mm (2.46") and overall outside diameter is 912.4mm (35.92"). At highway speed the tire completes about 349 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 625/10R31 is unavailable, the closest same-diameter substitutes on the same rim are 615/10R31 and 635/10R31. 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 625/10R31 you can upsize to 635/8R32 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 615/12R30 (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 625/10R31 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 625/10R31

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