Section Width235 mm (9.3")
Aspect Ratio80%
Rim Diameter20"
Overall Diameter884 mm (34.8")
Sidewall Height188 mm
Circumference2777 mm
235/80R20 — Buy Tires

Everything to know about the 235/80R20 tire size

Size geometry

A 235/80R20 tire has a 235mm section width and a 80% aspect ratio, mounted on a 20-inch rim. Sidewall height works out to 188.0mm (7.40") and overall outside diameter is 884.0mm (34.80"). At highway speed the tire completes about 360 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 235/80R20 is unavailable, the closest same-diameter substitutes on the same rim are 225/84R20 and 245/77R20. 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 235/80R20 you can upsize to 245/72R21 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 225/89R19 (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 235/80R20 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 235/80R20

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