Section Width345 mm (13.6")
Aspect Ratio11%
Rim Diameter30"
Overall Diameter838 mm (33.0")
Sidewall Height38 mm
Circumference2632 mm
345/11R30 — Buy Tires

Everything to know about the 345/11R30 tire size

Size geometry

A 345/11R30 tire has a 345mm section width and a 11% aspect ratio, mounted on a 30-inch rim. Sidewall height works out to 38.0mm (1.49") and overall outside diameter is 837.9mm (32.99"). At highway speed the tire completes about 380 revolutions per kilometre — your speedometer and odometer were calibrated against this number.

Direct substitute sizes

If 345/11R30 is unavailable, the closest same-diameter substitutes on the same rim are 335/11R30 and 355/11R30. 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 345/11R30 you can upsize to 355/7R31 (plus-one) to fit a larger wheel without changing the speedometer reading, or downsize to 335/15R29 (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 345/11R30 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 345/11R30

tire_size.no_vehicles_found