Section Width245 mm (9.7")
Aspect Ratio194%
Rim Diameter38"
Overall Diameter1916 mm (75.4")
Sidewall Height475 mm
Circumference6019 mm
245/194R38 — Buy Tires

Everything to know about the 245/194R38 tire size

Size geometry

A 245/194R38 tire has a 245mm section width and a 194% aspect ratio, mounted on a 38-inch rim. Sidewall height works out to 475.3mm (18.71") and overall outside diameter is 1915.8mm (75.43"). At highway speed the tire completes about 166 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 245/194R38 is unavailable, the closest same-diameter substitutes on the same rim are 235/202R38 and 255/186R38. 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 245/194R38 you can upsize to 255/181R39 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 235/208R37 (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 245/194R38 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 245/194R38

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