Section Width155 mm (6.1")
Aspect Ratio161%
Rim Diameter12"
Overall Diameter804 mm (31.6")
Sidewall Height250 mm
Circumference2526 mm
155/161R12 — Buy Tires

Everything to know about the 155/161R12 tire size

Size geometry

A 155/161R12 tire has a 155mm section width and a 161% aspect ratio, mounted on a 12-inch rim. Sidewall height works out to 249.6mm (9.82") and overall outside diameter is 803.9mm (31.65"). At highway speed the tire completes about 396 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 155/161R12 is unavailable, the closest same-diameter substitutes on the same rim are 145/172R12 and 165/151R12. 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 155/161R12 you can upsize to 165/144R13 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 145/181R11 (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 155/161R12 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 155/161R12

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