Section Width125 mm (4.9")
Aspect Ratio322%
Rim Diameter42"
Overall Diameter1872 mm (73.7")
Sidewall Height403 mm
Circumference5880 mm
125/322R42 — Buy Tires

Everything to know about the 125/322R42 tire size

Size geometry

A 125/322R42 tire has a 125mm section width and a 322% aspect ratio, mounted on a 42-inch rim. Sidewall height works out to 402.5mm (15.85") and overall outside diameter is 1871.8mm (73.69"). At highway speed the tire completes about 170 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 125/322R42 is unavailable, the closest same-diameter substitutes on the same rim are 115/350R42 and 135/298R42. 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 125/322R42 you can upsize to 135/289R43 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 115/361R41 (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 125/322R42 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 125/322R42

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