Section Width325 mm (12.8")
Aspect Ratio17%
Rim Diameter20"
Overall Diameter619 mm (24.4")
Sidewall Height55 mm
Circumference1943 mm
325/17R20 — Buy Tires

Everything to know about the 325/17R20 tire size

Size geometry

A 325/17R20 tire has a 325mm section width and a 17% aspect ratio, mounted on a 20-inch rim. Sidewall height works out to 55.3mm (2.18") and overall outside diameter is 618.5mm (24.35"). At highway speed the tire completes about 515 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 325/17R20 is unavailable, the closest same-diameter substitutes on the same rim are 315/18R20 and 335/16R20. 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 325/17R20 you can upsize to 335/13R21 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 315/22R19 (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 325/17R20 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 325/17R20

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