Section Width325 mm (12.8")
Aspect Ratio245%
Rim Diameter12"
Overall Diameter1897 mm (74.7")
Sidewall Height796 mm
Circumference5961 mm
325/245R12 — Buy Tires

Everything to know about the 325/245R12 tire size

Size geometry

A 325/245R12 tire has a 325mm section width and a 245% aspect ratio, mounted on a 12-inch rim. Sidewall height works out to 796.3mm (31.35") and overall outside diameter is 1897.3mm (74.70"). At highway speed the tire completes about 168 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 325/245R12 is unavailable, the closest same-diameter substitutes on the same rim are 315/253R12 and 335/238R12. 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 325/245R12 you can upsize to 335/234R13 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 315/257R11 (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 325/245R12 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 325/245R12

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