345/25R24 tire size in inches

A 345/25R24 tire measures

30.8" tall × 13.6" wide

3.40" sidewall on a 24" wheel. 655 revolutions per mile.

345/25R24 means a tire 345 mm wide, with sidewalls 25% as tall as the tire is wide (86 mm), radial construction (R), for a 24 inch wheel.

30.8"24" rim3.4"13.6" wide
345/25R24: 30.8 inches tall, 13.6 inches wide, on a 24 inch rim, drawn to scale

345/25R24 specs

Overall diameter (height)30.79 inches (782 mm)
Section width13.58 inches (345 mm)
Sidewall height3.40 inches (86 mm)
Wheel (rim) diameter24 inches
Circumference96.7 inches (2,457 mm)
Revolutions per mile655
Revolutions per kilometer407
Approximate rim width11.5" to 13.0"
In inches (flotation style)30.8x13.6R24
Aspect ratio25%

Calculated from the size. Real tires differ by brand, model and tread depth, typically by a few tenths of an inch.

Sizes that can replace 345/25R24 on a 24" wheel

These 24" sizes are within 3% of 345/25R24's overall diameter, the range most tire shops treat as interchangeable.

SizeDiameterWidthDifferenceReal speed at 60
285/30R2430.73"11.22"−0.2%59.9 mphCompare
295/30R2430.97"11.61"+0.6%60.3 mphCompare
355/25R2430.99"13.98"+0.6%60.4 mphCompare
335/25R2430.59"13.19"−0.6%59.6 mphCompare
255/35R2431.03"10.04"+0.8%60.5 mphCompare
275/30R2430.50"10.83"−1.0%59.4 mphCompare
325/25R2430.40"12.80"−1.3%59.2 mphCompare
305/30R2431.20"12.01"+1.3%60.8 mphCompare
265/35R2431.30"10.43"+1.7%61.0 mphCompare
265/30R2430.26"10.43"−1.7%59.0 mphCompare
315/25R2430.20"12.40"−1.9%58.8 mphCompare
315/30R2431.44"12.40"+2.1%61.3 mphCompare

Same height on other wheel sizes (plus and minus sizing)

SizeWheelDiameterDifference
325/50R1818"30.80"0.0%Compare
355/35R2121"30.78"0.0%Compare
235/80R1616"30.80"0.0%Compare
295/55R1818"30.78"−0.1%Compare
305/45R2020"30.81"+0.1%Compare
275/50R2020"30.83"+0.1%Compare
225/55R2121"30.74"−0.2%Compare
275/45R2121"30.74"−0.2%Compare
235/85R1515"30.73"−0.2%Compare
345/40R2020"30.87"+0.2%Compare
335/45R1919"30.87"+0.3%Compare
285/70R1515"30.71"−0.3%Compare

One size up or down

Compare 345/25R24 with another size

With 355/25R24 tires, when your speedometer says 60 mph you are really going

60.4 mph

355/25R24 is +0.20 inches (+0.6%) in overall diameter. That is within the 3% most shops and makers allow.

345/25R24355/25R24Difference%
Overall diameter30.79"30.99"+0.20"+0.6%
Section width13.58"13.98"+0.39"+2.9%
Sidewall height3.40"3.49"+0.10"+2.9%
Circumference96.73"97.35"+0.62"+0.6%
Revolutions per mile655.0650.8−4.2−0.6%

Questions

How tall is a 345/25R24 tire?
A 345/25R24 tire is 30.8 inches tall (782 mm), calculated from the size. It is 13.6 inches wide with 3.4 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
What does 345/25R24 mean?
345/25R24 means a tire 345 mm wide, with sidewalls 25% as tall as the tire is wide (86 mm), radial construction (R), for a 24 inch wheel.
How many revolutions per mile does a 345/25R24 tire make?
About 655 revolutions per mile, based on a circumference of 96.7 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
What rim width fits a 345/25R24 tire?
Roughly 11.5" to 13.0". Check the tire maker's approved rim range for the exact model before buying wheels.
Can I use 285/30R24 instead of 345/25R24?
285/30R24 is −0.06 inches (−0.2%) in overall diameter, so at an indicated 60 mph you would be doing 59.9 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.

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