Section Width505 mm (19.9")
Aspect Ratio120%
Rim Diameter27"
Overall Diameter1898 mm (74.7")
Sidewall Height606 mm
Circumference5962 mm
505/120R27 — Buy Tires

Everything to know about the 505/120R27 tire size

Size geometry

A 505/120R27 tire has a 505mm section width and a 120% aspect ratio, mounted on a 27-inch rim. Sidewall height works out to 606.0mm (23.86") and overall outside diameter is 1897.8mm (74.72"). At highway speed the tire completes about 168 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 505/120R27 is unavailable, the closest same-diameter substitutes on the same rim are 495/122R27 and 515/118R27. 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 505/120R27 you can upsize to 515/115R28 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 495/125R26 (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 505/120R27 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 505/120R27

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