Section Width185 mm (7.3")
Aspect Ratio68%
Rim Diameter10"
Overall Diameter506 mm (19.9")
Sidewall Height126 mm
Circumference1588 mm
185/68R10 — Buy Tires

Everything to know about the 185/68R10 tire size

Size geometry

A 185/68R10 tire has a 185mm section width and a 68% aspect ratio, mounted on a 10-inch rim. Sidewall height works out to 125.8mm (4.95") and overall outside diameter is 505.6mm (19.91"). At highway speed the tire completes about 630 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 185/68R10 is unavailable, the closest same-diameter substitutes on the same rim are 175/72R10 and 195/65R10. 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 185/68R10 you can upsize to 195/58R11 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 175/79R9 (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 185/68R10 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 185/68R10

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