Section Width485 mm (19.1")
Aspect Ratio18%
Rim Diameter28"
Overall Diameter886 mm (34.9")
Sidewall Height87 mm
Circumference2783 mm
485/18R28 — Buy Tires

Everything to know about the 485/18R28 tire size

Size geometry

A 485/18R28 tire has a 485mm section width and a 18% aspect ratio, mounted on a 28-inch rim. Sidewall height works out to 87.3mm (3.44") and overall outside diameter is 885.8mm (34.87"). At highway speed the tire completes about 359 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 485/18R28 is unavailable, the closest same-diameter substitutes on the same rim are 475/18R28 and 495/18R28. 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 485/18R28 you can upsize to 495/15R29 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 475/21R27 (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 485/18R28 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 485/18R28

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