Section Width205 mm (8.1")
Aspect Ratio399%
Rim Diameter10"
Overall Diameter1890 mm (74.4")
Sidewall Height818 mm
Circumference5937 mm
205/399R10 — Buy Tires

Everything to know about the 205/399R10 tire size

Size geometry

A 205/399R10 tire has a 205mm section width and a 399% aspect ratio, mounted on a 10-inch rim. Sidewall height works out to 818.0mm (32.20") and overall outside diameter is 1889.9mm (74.41"). At highway speed the tire completes about 168 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 205/399R10 is unavailable, the closest same-diameter substitutes on the same rim are 195/419R10 and 215/380R10. 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 205/399R10 you can upsize to 215/375R11 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 195/426R9 (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 205/399R10 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 205/399R10

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