Section Width645 mm (25.4")
Aspect Ratio60%
Rim Diameter10"
Overall Diameter1028 mm (40.5")
Sidewall Height387 mm
Circumference3230 mm
645/60R10 — Buy Tires

Everything to know about the 645/60R10 tire size

Size geometry

A 645/60R10 tire has a 645mm section width and a 60% aspect ratio, mounted on a 10-inch rim. Sidewall height works out to 387.0mm (15.24") and overall outside diameter is 1028.0mm (40.47"). At highway speed the tire completes about 310 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 645/60R10 is unavailable, the closest same-diameter substitutes on the same rim are 635/61R10 and 655/59R10. 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 645/60R10 you can upsize to 655/57R11 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 635/63R9 (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 645/60R10 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 645/60R10

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