Section Width635 mm (25.0")
Aspect Ratio61%
Rim Diameter10"
Overall Diameter1029 mm (40.5")
Sidewall Height387 mm
Circumference3232 mm
635/61R10 — Buy Tires

Everything to know about the 635/61R10 tire size

Size geometry

A 635/61R10 tire has a 635mm section width and a 61% aspect ratio, mounted on a 10-inch rim. Sidewall height works out to 387.4mm (15.25") and overall outside diameter is 1028.7mm (40.50"). At highway speed the tire completes about 309 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 635/61R10 is unavailable, the closest same-diameter substitutes on the same rim are 625/62R10 and 645/60R10. 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 635/61R10 you can upsize to 645/58R11 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 625/64R9 (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 635/61R10 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 635/61R10

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