Section Width105 mm (4.1")
Aspect Ratio149%
Rim Diameter12"
Overall Diameter618 mm (24.3")
Sidewall Height156 mm
Circumference1941 mm
105/149R12 — Buy Tires

Everything to know about the 105/149R12 tire size

Size geometry

A 105/149R12 tire has a 105mm section width and a 149% aspect ratio, mounted on a 12-inch rim. Sidewall height works out to 156.4mm (6.16") and overall outside diameter is 617.7mm (24.32"). At highway speed the tire completes about 515 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 105/149R12 is unavailable, the closest same-diameter substitutes on the same rim are 95/165R12 and 115/136R12. 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 105/149R12 you can upsize to 115/125R13 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 95/178R11 (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 105/149R12 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 105/149R12

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