Section Width275 mm (10.8")
Aspect Ratio258%
Rim Diameter18"
Overall Diameter1876 mm (73.9")
Sidewall Height710 mm
Circumference5894 mm
275/258R18 — Buy Tires

Everything to know about the 275/258R18 tire size

Size geometry

A 275/258R18 tire has a 275mm section width and a 258% aspect ratio, mounted on a 18-inch rim. Sidewall height works out to 709.5mm (27.93") and overall outside diameter is 1876.2mm (73.87"). At highway speed the tire completes about 170 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 275/258R18 is unavailable, the closest same-diameter substitutes on the same rim are 265/268R18 and 285/249R18. 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 275/258R18 you can upsize to 285/244R19 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 265/273R17 (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 275/258R18 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 275/258R18

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