Section Width665 mm (26.2")
Aspect Ratio39%
Rim Diameter19"
Overall Diameter1001 mm (39.4")
Sidewall Height259 mm
Circumference3146 mm
665/39R19 — Buy Tires

Everything to know about the 665/39R19 tire size

Size geometry

A 665/39R19 tire has a 665mm section width and a 39% aspect ratio, mounted on a 19-inch rim. Sidewall height works out to 259.4mm (10.21") and overall outside diameter is 1001.3mm (39.42"). At highway speed the tire completes about 318 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 665/39R19 is unavailable, the closest same-diameter substitutes on the same rim are 655/40R19 and 675/38R19. 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 665/39R19 you can upsize to 675/37R20 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 655/42R18 (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 665/39R19 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 665/39R19

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