Section Width285 mm (11.2")
Aspect Ratio44%
Rim Diameter18"
Overall Diameter708 mm (27.9")
Sidewall Height125 mm
Circumference2224 mm
285/44R18 — Buy Tires

Everything to know about the 285/44R18 tire size

Size geometry

A 285/44R18 tire has a 285mm section width and a 44% aspect ratio, mounted on a 18-inch rim. Sidewall height works out to 125.4mm (4.94") and overall outside diameter is 708.0mm (27.87"). At highway speed the tire completes about 450 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 285/44R18 is unavailable, the closest same-diameter substitutes on the same rim are 275/46R18 and 295/43R18. 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 285/44R18 you can upsize to 295/38R19 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 275/50R17 (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 285/44R18 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 285/44R18

tire_size.no_vehicles_found