Section Width555 mm (21.9")
Aspect Ratio12%
Rim Diameter27"
Overall Diameter819 mm (32.2")
Sidewall Height67 mm
Circumference2573 mm
555/12R27 — Buy Tires

Everything to know about the 555/12R27 tire size

Size geometry

A 555/12R27 tire has a 555mm section width and a 12% aspect ratio, mounted on a 27-inch rim. Sidewall height works out to 66.6mm (2.62") and overall outside diameter is 819.0mm (32.24"). At highway speed the tire completes about 389 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 555/12R27 is unavailable, the closest same-diameter substitutes on the same rim are 545/12R27 and 565/12R27. 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 555/12R27 you can upsize to 565/10R28 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 545/15R26 (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 555/12R27 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 555/12R27

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