Section Width285 mm (11.2")
Aspect Ratio104%
Rim Diameter12"
Overall Diameter898 mm (35.3")
Sidewall Height296 mm
Circumference2820 mm
285/104R12 — Buy Tires

Everything to know about the 285/104R12 tire size

Size geometry

A 285/104R12 tire has a 285mm section width and a 104% aspect ratio, mounted on a 12-inch rim. Sidewall height works out to 296.4mm (11.67") and overall outside diameter is 897.6mm (35.34"). At highway speed the tire completes about 355 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 285/104R12 is unavailable, the closest same-diameter substitutes on the same rim are 275/108R12 and 295/100R12. 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 285/104R12 you can upsize to 295/96R13 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 275/112R11 (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 285/104R12 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 285/104R12

tire_size.no_vehicles_found