Section Width255 mm (10.0")
Aspect Ratio104%
Rim Diameter12"
Overall Diameter835 mm (32.9")
Sidewall Height265 mm
Circumference2624 mm
255/104R12 — Buy Tires

Everything to know about the 255/104R12 tire size

Size geometry

A 255/104R12 tire has a 255mm section width and a 104% aspect ratio, mounted on a 12-inch rim. Sidewall height works out to 265.2mm (10.44") and overall outside diameter is 835.2mm (32.88"). At highway speed the tire completes about 381 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 255/104R12 is unavailable, the closest same-diameter substitutes on the same rim are 245/108R12 and 265/100R12. 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 255/104R12 you can upsize to 265/95R13 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 245/113R11 (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 255/104R12 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 255/104R12

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