Section Width325 mm (12.8")
Aspect Ratio21%
Rim Diameter24"
Overall Diameter746 mm (29.4")
Sidewall Height68 mm
Circumference2344 mm
325/21R24 — Buy Tires

Everything to know about the 325/21R24 tire size

Size geometry

A 325/21R24 tire has a 325mm section width and a 21% aspect ratio, mounted on a 24-inch rim. Sidewall height works out to 68.3mm (2.69") and overall outside diameter is 746.1mm (29.37"). At highway speed the tire completes about 427 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 325/21R24 is unavailable, the closest same-diameter substitutes on the same rim are 315/22R24 and 335/20R24. 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 325/21R24 you can upsize to 335/17R25 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 315/26R23 (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 325/21R24 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 325/21R24

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