Section Width175 mm (6.9")
Aspect Ratio138%
Rim Diameter10"
Overall Diameter737 mm (29.0")
Sidewall Height242 mm
Circumference2315 mm
175/138R10 — Buy Tires

Everything to know about the 175/138R10 tire size

Size geometry

A 175/138R10 tire has a 175mm section width and a 138% aspect ratio, mounted on a 10-inch rim. Sidewall height works out to 241.5mm (9.51") and overall outside diameter is 737.0mm (29.02"). At highway speed the tire completes about 432 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 175/138R10 is unavailable, the closest same-diameter substitutes on the same rim are 165/146R10 and 185/131R10. 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 175/138R10 you can upsize to 185/124R11 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 165/154R9 (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 175/138R10 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 175/138R10

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