Section Width545 mm (21.5")
Aspect Ratio27%
Rim Diameter27"
Overall Diameter980 mm (38.6")
Sidewall Height147 mm
Circumference3079 mm
545/27R27 — Buy Tires

Everything to know about the 545/27R27 tire size

Size geometry

A 545/27R27 tire has a 545mm section width and a 27% aspect ratio, mounted on a 27-inch rim. Sidewall height works out to 147.2mm (5.79") and overall outside diameter is 980.1mm (38.59"). At highway speed the tire completes about 325 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 545/27R27 is unavailable, the closest same-diameter substitutes on the same rim are 535/28R27 and 555/27R27. 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 545/27R27 you can upsize to 555/24R28 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 535/30R26 (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 545/27R27 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 545/27R27

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