Section Width925 mm (36.4")
Aspect Ratio39%
Rim Diameter13"
Overall Diameter1052 mm (41.4")
Sidewall Height361 mm
Circumference3304 mm
925/39R13 — Buy Tires

Everything to know about the 925/39R13 tire size

Size geometry

A 925/39R13 tire has a 925mm section width and a 39% aspect ratio, mounted on a 13-inch rim. Sidewall height works out to 360.8mm (14.20") and overall outside diameter is 1051.7mm (41.41"). At highway speed the tire completes about 303 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 925/39R13 is unavailable, the closest same-diameter substitutes on the same rim are 915/39R13 and 935/39R13. 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 925/39R13 you can upsize to 935/37R14 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 915/41R12 (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 925/39R13 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 925/39R13

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