Section Width565 mm (22.2")
Aspect Ratio42%
Rim Diameter18"
Overall Diameter932 mm (36.7")
Sidewall Height237 mm
Circumference2927 mm
565/42R18 — Buy Tires

Everything to know about the 565/42R18 tire size

Size geometry

A 565/42R18 tire has a 565mm section width and a 42% aspect ratio, mounted on a 18-inch rim. Sidewall height works out to 237.3mm (9.34") and overall outside diameter is 931.8mm (36.69"). At highway speed the tire completes about 342 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 565/42R18 is unavailable, the closest same-diameter substitutes on the same rim are 555/43R18 and 575/41R18. 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 565/42R18 you can upsize to 575/39R19 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 555/45R17 (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 565/42R18 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 565/42R18

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