Section Width685 mm (27.0")
Aspect Ratio50%
Rim Diameter10"
Overall Diameter939 mm (37.0")
Sidewall Height343 mm
Circumference2950 mm
685/50R10 — Buy Tires

Everything to know about the 685/50R10 tire size

Size geometry

A 685/50R10 tire has a 685mm section width and a 50% aspect ratio, mounted on a 10-inch rim. Sidewall height works out to 342.5mm (13.48") and overall outside diameter is 939.0mm (36.97"). At highway speed the tire completes about 339 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 685/50R10 is unavailable, the closest same-diameter substitutes on the same rim are 675/51R10 and 695/49R10. 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 685/50R10 you can upsize to 695/47R11 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 675/53R9 (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 685/50R10 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 685/50R10

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