Section Width155 mm (6.1")
Aspect Ratio143%
Rim Diameter12"
Overall Diameter748 mm (29.4")
Sidewall Height222 mm
Circumference2350 mm
155/143R12 — Buy Tires

Everything to know about the 155/143R12 tire size

Size geometry

A 155/143R12 tire has a 155mm section width and a 143% aspect ratio, mounted on a 12-inch rim. Sidewall height works out to 221.7mm (8.73") and overall outside diameter is 748.1mm (29.45"). At highway speed the tire completes about 425 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 155/143R12 is unavailable, the closest same-diameter substitutes on the same rim are 145/153R12 and 165/134R12. 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 155/143R12 you can upsize to 165/127R13 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 145/162R11 (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 155/143R12 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 155/143R12

tire_size.no_vehicles_found