Section Width275 mm (10.8")
Aspect Ratio248%
Rim Diameter18"
Overall Diameter1821 mm (71.7")
Sidewall Height682 mm
Circumference5721 mm
275/248R18 — Buy Tires

Everything to know about the 275/248R18 tire size

Size geometry

A 275/248R18 tire has a 275mm section width and a 248% aspect ratio, mounted on a 18-inch rim. Sidewall height works out to 682.0mm (26.85") and overall outside diameter is 1821.2mm (71.70"). At highway speed the tire completes about 175 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 275/248R18 is unavailable, the closest same-diameter substitutes on the same rim are 265/257R18 and 285/239R18. 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 275/248R18 you can upsize to 285/235R19 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 265/262R17 (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 275/248R18 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 275/248R18

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