Section Width485 mm (19.1")
Aspect Ratio20%
Rim Diameter29"
Overall Diameter931 mm (36.6")
Sidewall Height97 mm
Circumference2924 mm
485/20R29 — Buy Tires

Everything to know about the 485/20R29 tire size

Size geometry

A 485/20R29 tire has a 485mm section width and a 20% aspect ratio, mounted on a 29-inch rim. Sidewall height works out to 97.0mm (3.82") and overall outside diameter is 930.6mm (36.64"). At highway speed the tire completes about 342 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 485/20R29 is unavailable, the closest same-diameter substitutes on the same rim are 475/20R29 and 495/20R29. 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 485/20R29 you can upsize to 495/17R30 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 475/23R28 (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 485/20R29 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 485/20R29

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