Section Width345 mm (13.6")
Aspect Ratio20%
Rim Diameter25"
Overall Diameter773 mm (30.4")
Sidewall Height69 mm
Circumference2428 mm
345/20R25 — Buy Tires

Everything to know about the 345/20R25 tire size

Size geometry

A 345/20R25 tire has a 345mm section width and a 20% aspect ratio, mounted on a 25-inch rim. Sidewall height works out to 69.0mm (2.72") and overall outside diameter is 773.0mm (30.43"). At highway speed the tire completes about 412 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 345/20R25 is unavailable, the closest same-diameter substitutes on the same rim are 335/21R25 and 355/19R25. 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 345/20R25 you can upsize to 355/16R26 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 335/24R24 (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 345/20R25 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 345/20R25

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