Section Width375 mm (14.8")
Aspect Ratio128%
Rim Diameter37"
Overall Diameter1900 mm (74.8")
Sidewall Height480 mm
Circumference5968 mm
375/128R37 — Buy Tires

Everything to know about the 375/128R37 tire size

Size geometry

A 375/128R37 tire has a 375mm section width and a 128% aspect ratio, mounted on a 37-inch rim. Sidewall height works out to 480.0mm (18.90") and overall outside diameter is 1899.8mm (74.80"). At highway speed the tire completes about 168 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 375/128R37 is unavailable, the closest same-diameter substitutes on the same rim are 365/132R37 and 385/125R37. 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 375/128R37 you can upsize to 385/121R38 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 365/135R36 (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 375/128R37 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 375/128R37

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