Section Width485 mm (19.1")
Aspect Ratio34%
Rim Diameter20"
Overall Diameter838 mm (33.0")
Sidewall Height165 mm
Circumference2632 mm
485/34R20 — Buy Tires

Everything to know about the 485/34R20 tire size

Size geometry

A 485/34R20 tire has a 485mm section width and a 34% aspect ratio, mounted on a 20-inch rim. Sidewall height works out to 164.9mm (6.49") and overall outside diameter is 837.8mm (32.98"). At highway speed the tire completes about 380 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 485/34R20 is unavailable, the closest same-diameter substitutes on the same rim are 475/35R20 and 495/33R20. 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 485/34R20 you can upsize to 495/31R21 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 475/37R19 (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 485/34R20 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 485/34R20

tire_size.no_vehicles_found