Section Width345 mm (13.6")
Aspect Ratio19%
Rim Diameter12"
Overall Diameter436 mm (17.2")
Sidewall Height66 mm
Circumference1369 mm
345/19R12 — Buy Tires

Everything to know about the 345/19R12 tire size

Size geometry

A 345/19R12 tire has a 345mm section width and a 19% aspect ratio, mounted on a 12-inch rim. Sidewall height works out to 65.5mm (2.58") and overall outside diameter is 435.9mm (17.16"). At highway speed the tire completes about 730 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 345/19R12 is unavailable, the closest same-diameter substitutes on the same rim are 335/20R12 and 355/18R12. 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 345/19R12 you can upsize to 355/15R13 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 335/23R11 (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 345/19R12 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 345/19R12

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