Section Width305 mm (12.0")
Aspect Ratio103%
Rim Diameter10"
Overall Diameter882 mm (34.7")
Sidewall Height314 mm
Circumference2772 mm
305/103R10 — Buy Tires

Everything to know about the 305/103R10 tire size

Size geometry

A 305/103R10 tire has a 305mm section width and a 103% aspect ratio, mounted on a 10-inch rim. Sidewall height works out to 314.1mm (12.37") and overall outside diameter is 882.3mm (34.74"). At highway speed the tire completes about 361 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 305/103R10 is unavailable, the closest same-diameter substitutes on the same rim are 295/106R10 and 315/100R10. 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 305/103R10 you can upsize to 315/96R11 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 295/111R9 (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 305/103R10 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 305/103R10

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