Section Width435 mm (17.1")
Aspect Ratio49%
Rim Diameter18"
Overall Diameter884 mm (34.8")
Sidewall Height213 mm
Circumference2776 mm
435/49R18 — Buy Tires

Everything to know about the 435/49R18 tire size

Size geometry

A 435/49R18 tire has a 435mm section width and a 49% aspect ratio, mounted on a 18-inch rim. Sidewall height works out to 213.2mm (8.39") and overall outside diameter is 883.5mm (34.78"). At highway speed the tire completes about 360 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 435/49R18 is unavailable, the closest same-diameter substitutes on the same rim are 425/50R18 and 445/48R18. 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 435/49R18 you can upsize to 445/45R19 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 425/53R17 (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 435/49R18 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 435/49R18

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