Section Width135 mm (5.3")
Aspect Ratio66%
Rim Diameter15"
Overall Diameter559 mm (22.0")
Sidewall Height89 mm
Circumference1757 mm
135/66R15 — Buy Tires

Everything to know about the 135/66R15 tire size

Size geometry

A 135/66R15 tire has a 135mm section width and a 66% aspect ratio, mounted on a 15-inch rim. Sidewall height works out to 89.1mm (3.51") and overall outside diameter is 559.2mm (22.02"). At highway speed the tire completes about 569 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 135/66R15 is unavailable, the closest same-diameter substitutes on the same rim are 125/71R15 and 145/61R15. 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 135/66R15 you can upsize to 145/53R16 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 125/81R14 (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 135/66R15 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 135/66R15

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