Section Width305 mm (12.0")
Aspect Ratio11%
Rim Diameter27"
Overall Diameter753 mm (29.6")
Sidewall Height34 mm
Circumference2365 mm
305/11R27 — Buy Tires

Everything to know about the 305/11R27 tire size

Size geometry

A 305/11R27 tire has a 305mm section width and a 11% aspect ratio, mounted on a 27-inch rim. Sidewall height works out to 33.5mm (1.32") and overall outside diameter is 752.9mm (29.64"). At highway speed the tire completes about 423 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 305/11R27 is unavailable, the closest same-diameter substitutes on the same rim are 295/11R27 and 315/11R27. 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 305/11R27 you can upsize to 315/7R28 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 295/16R26 (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 305/11R27 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 305/11R27

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