Section Width155 mm (6.1")
Aspect Ratio23%
Rim Diameter30"
Overall Diameter833 mm (32.8")
Sidewall Height36 mm
Circumference2618 mm
155/23R30 — Buy Tires

Everything to know about the 155/23R30 tire size

Size geometry

A 155/23R30 tire has a 155mm section width and a 23% aspect ratio, mounted on a 30-inch rim. Sidewall height works out to 35.6mm (1.40") and overall outside diameter is 833.3mm (32.81"). At highway speed the tire completes about 382 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 155/23R30 is unavailable, the closest same-diameter substitutes on the same rim are 145/25R30 and 165/22R30. 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 155/23R30 you can upsize to 165/14R31 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 145/33R29 (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 155/23R30 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 155/23R30

tire_size.no_vehicles_found