Section Width125 mm (4.9")
Aspect Ratio437%
Rim Diameter27"
Overall Diameter1778 mm (70.0")
Sidewall Height546 mm
Circumference5587 mm
125/437R27 — Buy Tires

Everything to know about the 125/437R27 tire size

Size geometry

A 125/437R27 tire has a 125mm section width and a 437% aspect ratio, mounted on a 27-inch rim. Sidewall height works out to 546.3mm (21.51") and overall outside diameter is 1778.3mm (70.01"). At highway speed the tire completes about 179 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 125/437R27 is unavailable, the closest same-diameter substitutes on the same rim are 115/475R27 and 135/405R27. 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 125/437R27 you can upsize to 135/395R28 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 115/486R26 (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 125/437R27 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 125/437R27

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