30x10.00R15 vs 30x10.00R15 tire size comparison

Change either size and everything below updates.

Start from your car make, model, year

Make Model Year

Width/AspectRRim

DiameterxWidthRRim

Width/AspectRRim

DiameterxWidthRRim

Width in mm · aspect = sidewall height as a % of width · rim in inches

Flotation (LT) sizes, all in inches: overall diameter × section width, then rim

30x10.00R15: 30.00″ (762 mm) tall, 10.00″ (254 mm) wide, sidewall 7.50″ (191 mm) — 672 revolutions per mile.

Same size

0.00% diameter

Both sizes are identical, so nothing changes. Pick a different new size to compare.

Tires in 30x10.00R15

Check price on Amazon · 30x10.00R15 Best-rated 30x10.00R15 tires

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Measurement	30x10.00R15	30x10.00R15	Diff	%
Overall diameter	30.00″762 mm	30.00″762 mm	0.00″	0.0%
Section width	254.0 mm	254.0 mm	0.0 mm	0.0%
Sidewall height	190.5 mm	190.5 mm	0.0 mm	0.0%
Rim diameter	15″	15″	0″	0.0%
Circumference	94.25″2394 mm	94.25″2394 mm	0.00″	0.0%
Revolutions per mileturns per distance; drives the odometer	672418 /km	672418 /km	0	0.0%
Ride height change	—	—	0.00″ 0.0 mm

Speedometer reading

Speedo shows

60mph

97 km/h

Actual speed

60.0mph

97 km/h

Overlay

30x10.00R1530x10.00R15

How to use the tire size calculator

Put your current tire size — width, aspect ratio and rim diameter — into the first form, then your desired size into the second. You’ll get the difference between the new and the old size, plus the speedometer reading difference and your actual speed on the new set. Both metric and flotation (LT inch) sizes are supported.

The calculator helps you decide whether a set of tires and wheels will fit your car. To compare tires by brand and model instead, use our tire comparison tool; to look up factory sizes, browse by car make.

Changing wheels too? The wheel offset and backspacing calculator shows how far a new wheel width and offset move the tire toward the suspension and the fender.