Section Width505 mm (19.9")
Aspect Ratio68%
Rim Diameter11"
Overall Diameter966 mm (38.0")
Sidewall Height343 mm
Circumference3035 mm
505/68R11 — Buy Tires

Everything to know about the 505/68R11 tire size

Size geometry

A 505/68R11 tire has a 505mm section width and a 68% aspect ratio, mounted on a 11-inch rim. Sidewall height works out to 343.4mm (13.52") and overall outside diameter is 966.2mm (38.04"). At highway speed the tire completes about 329 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 505/68R11 is unavailable, the closest same-diameter substitutes on the same rim are 495/69R11 and 515/67R11. 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 505/68R11 you can upsize to 515/64R12 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 495/72R10 (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 505/68R11 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 505/68R11

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