Section Width275 mm (10.8")
Aspect Ratio20%
Rim Diameter68"
Overall Diameter1837 mm (72.3")
Sidewall Height55 mm
Circumference5772 mm
275/20R68 — Buy Tires

Everything to know about the 275/20R68 tire size

Size geometry

A 275/20R68 tire has a 275mm section width and a 20% aspect ratio, mounted on a 68-inch rim. Sidewall height works out to 55.0mm (2.17") and overall outside diameter is 1837.2mm (72.33"). At highway speed the tire completes about 173 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 275/20R68 is unavailable, the closest same-diameter substitutes on the same rim are 265/21R68 and 285/19R68. 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 275/20R68 you can upsize to 285/15R69 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 265/26R67 (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 275/20R68 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 275/20R68

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