Section Width105 mm (4.1")
Aspect Ratio48%
Rim Diameter66"
Overall Diameter1777 mm (70.0")
Sidewall Height50 mm
Circumference5583 mm
105/48R66 — Buy Tires

Everything to know about the 105/48R66 tire size

Size geometry

A 105/48R66 tire has a 105mm section width and a 48% aspect ratio, mounted on a 66-inch rim. Sidewall height works out to 50.4mm (1.98") and overall outside diameter is 1777.2mm (69.97"). At highway speed the tire completes about 179 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 105/48R66 is unavailable, the closest same-diameter substitutes on the same rim are 95/53R66 and 115/44R66. 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 105/48R66 you can upsize to 115/33R67 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 95/66R65 (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 105/48R66 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 105/48R66

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