255/65R19 tire size in inches

A 255/65R19 tire measures

32.1" tall × 10.0" wide

6.53" sidewall on a 19" wheel. 629 revolutions per mile.

255/65R19 means a tire 255 mm wide, with sidewalls 65% as tall as the tire is wide (166 mm), radial construction (R), for a 19 inch wheel.

32.1"19" rim6.5"10.0" wide
255/65R19: 32.1 inches tall, 10.0 inches wide, on a 19 inch rim, drawn to scale

255/65R19 specs

Overall diameter (height)32.05 inches (814 mm)
Section width10.04 inches (255 mm)
Sidewall height6.53 inches (166 mm)
Wheel (rim) diameter19 inches
Circumference100.7 inches (2,558 mm)
Revolutions per mile629
Revolutions per kilometer391
Approximate rim width7.0" to 8.5"
In inches (flotation style)32.1x10.0R19
Aspect ratio65%

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 255/65R19 on a 19" wheel

These 19" sizes are within 3% of 255/65R19's overall diameter, the range most tire shops treat as interchangeable.

SizeDiameterWidthDifferenceReal speed at 60
275/60R1931.99"10.83"−0.2%59.9 mphCompare
335/50R1932.19"13.19"+0.4%60.3 mphCompare
305/55R1932.21"12.01"+0.5%60.3 mphCompare
325/50R1931.80"12.80"−0.8%59.5 mphCompare
295/55R1931.78"11.61"−0.9%59.5 mphCompare
285/60R1932.46"11.22"+1.3%60.8 mphCompare
355/45R1931.58"13.98"−1.5%59.1 mphCompare
265/65R1932.56"10.43"+1.6%61.0 mphCompare
245/65R1931.54"9.65"−1.6%59.0 mphCompare
265/60R1931.52"10.43"−1.7%59.0 mphCompare
345/50R1932.58"13.58"+1.7%61.0 mphCompare
315/55R1932.64"12.40"+1.8%61.1 mphCompare

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

SizeWheelDiameterDifference
255/70R1818"32.06"0.0%Compare
255/60R2020"32.05"0.0%Compare
255/75R1717"32.06"0.0%Compare
255/55R2121"32.04"0.0%Compare
255/80R1616"32.06"0.0%Compare
255/50R2222"32.04"0.0%Compare
255/85R1515"32.07"0.0%Compare
255/40R2424"32.03"−0.1%Compare
275/65R1818"32.07"+0.1%Compare
325/55R1818"32.07"+0.1%Compare
235/65R2020"32.03"−0.1%Compare
305/50R2020"32.01"−0.1%Compare

One size up or down

Compare 255/65R19 with another size

With 265/65R19 tires, when your speedometer says 60 mph you are really going

61.0 mph

265/65R19 is +0.51 inches (+1.6%) in overall diameter. That is within the 3% most shops and makers allow.

255/65R19265/65R19Difference%
Overall diameter32.05"32.56"+0.51"+1.6%
Section width10.04"10.43"+0.39"+3.9%
Sidewall height6.53"6.78"+0.26"+3.9%
Circumference100.69"102.30"+1.61"+1.6%
Revolutions per mile629.2619.4−9.9−1.6%

Questions

How tall is a 255/65R19 tire?
A 255/65R19 tire is 32.1 inches tall (814 mm), calculated from the size. It is 10.0 inches wide with 6.5 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
What does 255/65R19 mean?
255/65R19 means a tire 255 mm wide, with sidewalls 65% as tall as the tire is wide (166 mm), radial construction (R), for a 19 inch wheel.
How many revolutions per mile does a 255/65R19 tire make?
About 629 revolutions per mile, based on a circumference of 100.7 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
What rim width fits a 255/65R19 tire?
Roughly 7.0" to 8.5". Check the tire maker's approved rim range for the exact model before buying wheels.
Can I use 275/60R19 instead of 255/65R19?
275/60R19 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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