Section Width395 mm (15.6")
Aspect Ratio63%
Rim Diameter20"
Overall Diameter1006 mm (39.6")
Sidewall Height249 mm
Circumference3160 mm
395/63R20 — Buy Tires

Everything to know about the 395/63R20 tire size

Size geometry

A 395/63R20 tire has a 395mm section width and a 63% aspect ratio, mounted on a 20-inch rim. Sidewall height works out to 248.8mm (9.80") and overall outside diameter is 1005.7mm (39.59"). At highway speed the tire completes about 317 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 395/63R20 is unavailable, the closest same-diameter substitutes on the same rim are 385/65R20 and 405/61R20. 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 395/63R20 you can upsize to 405/58R21 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 385/68R19 (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 395/63R20 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 395/63R20

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