Section Width345 mm (13.6")
Aspect Ratio30%
Rim Diameter23"
Overall Diameter791 mm (31.1")
Sidewall Height104 mm
Circumference2486 mm
345/30R23 — Buy Tires

Everything to know about the 345/30R23 tire size

Size geometry

A 345/30R23 tire has a 345mm section width and a 30% aspect ratio, mounted on a 23-inch rim. Sidewall height works out to 103.5mm (4.07") and overall outside diameter is 791.2mm (31.15"). At highway speed the tire completes about 402 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 345/30R23 is unavailable, the closest same-diameter substitutes on the same rim are 335/31R23 and 355/29R23. 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 345/30R23 you can upsize to 355/26R24 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 335/35R22 (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 345/30R23 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 345/30R23

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