Section Width325 mm (12.8")
Aspect Ratio18%
Rim Diameter25"
Overall Diameter752 mm (29.6")
Sidewall Height59 mm
Circumference2362 mm
325/18R25 — Buy Tires

Everything to know about the 325/18R25 tire size

Size geometry

A 325/18R25 tire has a 325mm section width and a 18% aspect ratio, mounted on a 25-inch rim. Sidewall height works out to 58.5mm (2.30") and overall outside diameter is 752.0mm (29.61"). At highway speed the tire completes about 423 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 325/18R25 is unavailable, the closest same-diameter substitutes on the same rim are 315/19R25 and 335/17R25. 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 325/18R25 you can upsize to 335/14R26 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 315/23R24 (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 325/18R25 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 325/18R25

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