Section Width125 mm (4.9")
Aspect Ratio391%
Rim Diameter32"
Overall Diameter1790 mm (70.5")
Sidewall Height489 mm
Circumference5624 mm
125/391R32 — Buy Tires

Everything to know about the 125/391R32 tire size

Size geometry

A 125/391R32 tire has a 125mm section width and a 391% aspect ratio, mounted on a 32-inch rim. Sidewall height works out to 488.8mm (19.24") and overall outside diameter is 1790.3mm (70.48"). At highway speed the tire completes about 178 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 125/391R32 is unavailable, the closest same-diameter substitutes on the same rim are 115/425R32 and 135/362R32. 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 125/391R32 you can upsize to 135/353R33 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 115/436R31 (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 125/391R32 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 125/391R32

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