Section Width385 mm (15.2")
Aspect Ratio190%
Rim Diameter18"
Overall Diameter1920 mm (75.6")
Sidewall Height732 mm
Circumference6032 mm
385/190R18 — Buy Tires

Everything to know about the 385/190R18 tire size

Size geometry

A 385/190R18 tire has a 385mm section width and a 190% aspect ratio, mounted on a 18-inch rim. Sidewall height works out to 731.5mm (28.80") and overall outside diameter is 1920.2mm (75.60"). At highway speed the tire completes about 166 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 385/190R18 is unavailable, the closest same-diameter substitutes on the same rim are 375/195R18 and 395/185R18. 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 385/190R18 you can upsize to 395/182R19 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 375/198R17 (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 385/190R18 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 385/190R18

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