Section Width205 mm (8.1")
Aspect Ratio251%
Rim Diameter30"
Overall Diameter1791 mm (70.5")
Sidewall Height515 mm
Circumference5627 mm
205/251R30 — Buy Tires

Everything to know about the 205/251R30 tire size

Size geometry

A 205/251R30 tire has a 205mm section width and a 251% aspect ratio, mounted on a 30-inch rim. Sidewall height works out to 514.5mm (20.26") and overall outside diameter is 1791.1mm (70.52"). At highway speed the tire completes about 178 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 205/251R30 is unavailable, the closest same-diameter substitutes on the same rim are 195/264R30 and 215/239R30. 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 205/251R30 you can upsize to 215/233R31 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 195/270R29 (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 205/251R30 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 205/251R30

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