Section Width125 mm (4.9")
Aspect Ratio382%
Rim Diameter37"
Overall Diameter1895 mm (74.6")
Sidewall Height478 mm
Circumference5953 mm
125/382R37 — Buy Tires

Everything to know about the 125/382R37 tire size

Size geometry

A 125/382R37 tire has a 125mm section width and a 382% aspect ratio, mounted on a 37-inch rim. Sidewall height works out to 477.5mm (18.80") and overall outside diameter is 1894.8mm (74.60"). At highway speed the tire completes about 168 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 125/382R37 is unavailable, the closest same-diameter substitutes on the same rim are 115/415R37 and 135/354R37. 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 125/382R37 you can upsize to 135/344R38 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 115/426R36 (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 125/382R37 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 125/382R37

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