Section Width115 mm (4.5")
Aspect Ratio364%
Rim Diameter40"
Overall Diameter1853 mm (73.0")
Sidewall Height419 mm
Circumference5822 mm
115/364R40 — Buy Tires

Everything to know about the 115/364R40 tire size

Size geometry

A 115/364R40 tire has a 115mm section width and a 364% aspect ratio, mounted on a 40-inch rim. Sidewall height works out to 418.6mm (16.48") and overall outside diameter is 1853.2mm (72.96"). At highway speed the tire completes about 172 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 115/364R40 is unavailable, the closest same-diameter substitutes on the same rim are 105/399R40 and 125/335R40. 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 115/364R40 you can upsize to 125/325R41 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 105/411R39 (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 115/364R40 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 115/364R40

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