Section Width355 mm (14.0")
Aspect Ratio178%
Rim Diameter26"
Overall Diameter1924 mm (75.8")
Sidewall Height632 mm
Circumference6045 mm
355/178R26 — Buy Tires

Everything to know about the 355/178R26 tire size

Size geometry

A 355/178R26 tire has a 355mm section width and a 178% aspect ratio, mounted on a 26-inch rim. Sidewall height works out to 631.9mm (24.88") and overall outside diameter is 1924.2mm (75.76"). At highway speed the tire completes about 165 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 355/178R26 is unavailable, the closest same-diameter substitutes on the same rim are 345/183R26 and 365/173R26. 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 355/178R26 you can upsize to 365/170R27 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 345/187R25 (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 355/178R26 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 355/178R26

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