Section Width825 mm (32.5")
Aspect Ratio43%
Rim Diameter12"
Overall Diameter1014 mm (39.9")
Sidewall Height355 mm
Circumference3187 mm
825/43R12 — Buy Tires

Everything to know about the 825/43R12 tire size

Size geometry

A 825/43R12 tire has a 825mm section width and a 43% aspect ratio, mounted on a 12-inch rim. Sidewall height works out to 354.8mm (13.97") and overall outside diameter is 1014.3mm (39.93"). At highway speed the tire completes about 314 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 825/43R12 is unavailable, the closest same-diameter substitutes on the same rim are 815/44R12 and 835/42R12. 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 825/43R12 you can upsize to 835/41R13 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 815/45R11 (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 825/43R12 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 825/43R12

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