Section Width155 mm (6.1")
Aspect Ratio20%
Rim Diameter23"
Overall Diameter646 mm (25.4")
Sidewall Height31 mm
Circumference2030 mm
155/20R23 — Buy Tires

Everything to know about the 155/20R23 tire size

Size geometry

A 155/20R23 tire has a 155mm section width and a 20% aspect ratio, mounted on a 23-inch rim. Sidewall height works out to 31.0mm (1.22") and overall outside diameter is 646.2mm (25.44"). At highway speed the tire completes about 493 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 155/20R23 is unavailable, the closest same-diameter substitutes on the same rim are 145/21R23 and 165/19R23. 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 155/20R23 you can upsize to 165/11R24 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 145/30R22 (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 155/20R23 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 155/20R23

tire_size.no_vehicles_found