Section Width105 mm (4.1")
Aspect Ratio143%
Rim Diameter12"
Overall Diameter605 mm (23.8")
Sidewall Height150 mm
Circumference1901 mm
105/143R12 — Buy Tires

Everything to know about the 105/143R12 tire size

Size geometry

A 105/143R12 tire has a 105mm section width and a 143% aspect ratio, mounted on a 12-inch rim. Sidewall height works out to 150.2mm (5.91") and overall outside diameter is 605.1mm (23.82"). At highway speed the tire completes about 526 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 105/143R12 is unavailable, the closest same-diameter substitutes on the same rim are 95/158R12 and 115/131R12. 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 105/143R12 you can upsize to 115/120R13 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 95/171R11 (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 105/143R12 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 105/143R12

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