Section Width625 mm (24.6")
Aspect Ratio22%
Rim Diameter18"
Overall Diameter732 mm (28.8")
Sidewall Height138 mm
Circumference2300 mm
625/22R18 — Buy Tires

Everything to know about the 625/22R18 tire size

Size geometry

A 625/22R18 tire has a 625mm section width and a 22% aspect ratio, mounted on a 18-inch rim. Sidewall height works out to 137.5mm (5.41") and overall outside diameter is 732.2mm (28.83"). At highway speed the tire completes about 435 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 625/22R18 is unavailable, the closest same-diameter substitutes on the same rim are 615/22R18 and 635/22R18. 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 625/22R18 you can upsize to 635/20R19 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 615/24R17 (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 625/22R18 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 625/22R18

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