Section Width325 mm (12.8")
Aspect Ratio188%
Rim Diameter28"
Overall Diameter1933 mm (76.1")
Sidewall Height611 mm
Circumference6073 mm
325/188R28 — Buy Tires

Everything to know about the 325/188R28 tire size

Size geometry

A 325/188R28 tire has a 325mm section width and a 188% aspect ratio, mounted on a 28-inch rim. Sidewall height works out to 611.0mm (24.06") and overall outside diameter is 1933.2mm (76.11"). At highway speed the tire completes about 165 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 325/188R28 is unavailable, the closest same-diameter substitutes on the same rim are 315/194R28 and 335/182R28. 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 325/188R28 you can upsize to 335/179R29 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 315/198R27 (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 325/188R28 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 325/188R28

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