Section Width225 mm (8.9")
Aspect Ratio55%
Rim Diameter30"
Overall Diameter1010 mm (39.7")
Sidewall Height124 mm
Circumference3171 mm
225/55R30 — Buy Tires

Everything to know about the 225/55R30 tire size

Size geometry

A 225/55R30 tire has a 225mm section width and a 55% aspect ratio, mounted on a 30-inch rim. Sidewall height works out to 123.8mm (4.87") and overall outside diameter is 1009.5mm (39.74"). At highway speed the tire completes about 315 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 225/55R30 is unavailable, the closest same-diameter substitutes on the same rim are 215/58R30 and 235/53R30. 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 225/55R30 you can upsize to 235/47R31 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 215/63R29 (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 225/55R30 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 225/55R30

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