Section Width115 mm (4.5")
Aspect Ratio255%
Rim Diameter12"
Overall Diameter891 mm (35.1")
Sidewall Height293 mm
Circumference2800 mm
115/255R12 — Buy Tires

Everything to know about the 115/255R12 tire size

Size geometry

A 115/255R12 tire has a 115mm section width and a 255% aspect ratio, mounted on a 12-inch rim. Sidewall height works out to 293.3mm (11.55") and overall outside diameter is 891.3mm (35.09"). At highway speed the tire completes about 357 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 115/255R12 is unavailable, the closest same-diameter substitutes on the same rim are 105/279R12 and 125/235R12. 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 115/255R12 you can upsize to 125/224R13 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 105/291R11 (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 115/255R12 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 115/255R12

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