Section Width115 mm (4.5")
Aspect Ratio32%
Rim Diameter20"
Overall Diameter582 mm (22.9")
Sidewall Height37 mm
Circumference1827 mm
115/32R20 — Buy Tires

Everything to know about the 115/32R20 tire size

Size geometry

A 115/32R20 tire has a 115mm section width and a 32% aspect ratio, mounted on a 20-inch rim. Sidewall height works out to 36.8mm (1.45") and overall outside diameter is 581.6mm (22.90"). At highway speed the tire completes about 547 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 115/32R20 is unavailable, the closest same-diameter substitutes on the same rim are 105/35R20 and 125/29R20. 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 115/32R20 you can upsize to 125/19R21 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 105/47R19 (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 115/32R20 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 115/32R20

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