Section Width115 mm (4.5")
Aspect Ratio339%
Rim Diameter42"
Overall Diameter1847 mm (72.7")
Sidewall Height390 mm
Circumference5801 mm
115/339R42 — Buy Tires

Everything to know about the 115/339R42 tire size

Size geometry

A 115/339R42 tire has a 115mm section width and a 339% aspect ratio, mounted on a 42-inch rim. Sidewall height works out to 389.9mm (15.35") and overall outside diameter is 1846.5mm (72.70"). At highway speed the tire completes about 172 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 115/339R42 is unavailable, the closest same-diameter substitutes on the same rim are 105/371R42 and 125/312R42. 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 115/339R42 you can upsize to 125/302R43 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 105/383R41 (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 115/339R42 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 115/339R42

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