Section Width925 mm (36.4")
Aspect Ratio21%
Rim Diameter27"
Overall Diameter1074 mm (42.3")
Sidewall Height194 mm
Circumference3375 mm
925/21R27 — Buy Tires

Everything to know about the 925/21R27 tire size

Size geometry

A 925/21R27 tire has a 925mm section width and a 21% aspect ratio, mounted on a 27-inch rim. Sidewall height works out to 194.3mm (7.65") and overall outside diameter is 1074.3mm (42.30"). At highway speed the tire completes about 296 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 925/21R27 is unavailable, the closest same-diameter substitutes on the same rim are 915/21R27 and 935/21R27. 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 925/21R27 you can upsize to 935/19R28 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 915/23R26 (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 925/21R27 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 925/21R27

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