Section Width325 mm (12.8")
Aspect Ratio197%
Rim Diameter20"
Overall Diameter1789 mm (70.4")
Sidewall Height640 mm
Circumference5619 mm
325/197R20 — Buy Tires

Everything to know about the 325/197R20 tire size

Size geometry

A 325/197R20 tire has a 325mm section width and a 197% aspect ratio, mounted on a 20-inch rim. Sidewall height works out to 640.3mm (25.21") and overall outside diameter is 1788.5mm (70.41"). At highway speed the tire completes about 178 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 325/197R20 is unavailable, the closest same-diameter substitutes on the same rim are 315/203R20 and 335/191R20. 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 325/197R20 you can upsize to 335/187R21 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 315/207R19 (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 325/197R20 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 325/197R20

tire_size.no_vehicles_found