Section Width605 mm (23.8")
Aspect Ratio47%
Rim Diameter18"
Overall Diameter1026 mm (40.4")
Sidewall Height284 mm
Circumference3223 mm
605/47R18 — Buy Tires

Everything to know about the 605/47R18 tire size

Size geometry

A 605/47R18 tire has a 605mm section width and a 47% aspect ratio, mounted on a 18-inch rim. Sidewall height works out to 284.4mm (11.19") and overall outside diameter is 1025.9mm (40.39"). At highway speed the tire completes about 310 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 605/47R18 is unavailable, the closest same-diameter substitutes on the same rim are 595/48R18 and 615/46R18. 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 605/47R18 you can upsize to 615/44R19 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 595/50R17 (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 605/47R18 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 605/47R18

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