Section Width155 mm (6.1")
Aspect Ratio56%
Rim Diameter15"
Overall Diameter555 mm (21.8")
Sidewall Height87 mm
Circumference1742 mm
155/56R15 — Buy Tires

Everything to know about the 155/56R15 tire size

Size geometry

A 155/56R15 tire has a 155mm section width and a 56% aspect ratio, mounted on a 15-inch rim. Sidewall height works out to 86.8mm (3.42") and overall outside diameter is 554.6mm (21.83"). At highway speed the tire completes about 574 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 155/56R15 is unavailable, the closest same-diameter substitutes on the same rim are 145/60R15 and 165/53R15. 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 155/56R15 you can upsize to 165/45R16 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 145/69R14 (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 155/56R15 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 155/56R15

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