Section Width185 mm (7.3")
Aspect Ratio42%
Rim Diameter28"
Overall Diameter867 mm (34.1")
Sidewall Height78 mm
Circumference2723 mm
185/42R28 — Buy Tires

Everything to know about the 185/42R28 tire size

Size geometry

A 185/42R28 tire has a 185mm section width and a 42% aspect ratio, mounted on a 28-inch rim. Sidewall height works out to 77.7mm (3.06") and overall outside diameter is 866.6mm (34.12"). At highway speed the tire completes about 367 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 185/42R28 is unavailable, the closest same-diameter substitutes on the same rim are 175/44R28 and 195/40R28. 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 185/42R28 you can upsize to 195/33R29 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 175/52R27 (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 185/42R28 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 185/42R28

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