355/45R19 tire size in inches

A 355/45R19 tire measures

31.6" tall × 14.0" wide

6.29" sidewall on a 19" wheel. 639 revolutions per mile.

355/45R19 means a tire 355 mm wide, with sidewalls 45% as tall as the tire is wide (160 mm), radial construction (R), for a 19 inch wheel.

31.6"19" rim6.3"14.0" wide
355/45R19: 31.6 inches tall, 14.0 inches wide, on a 19 inch rim, drawn to scale

355/45R19 specs

Overall diameter (height)31.58 inches (802 mm)
Section width13.98 inches (355 mm)
Sidewall height6.29 inches (160 mm)
Wheel (rim) diameter19 inches
Circumference99.2 inches (2,520 mm)
Revolutions per mile639
Revolutions per kilometer397
Approximate rim width11.5" to 13.0"
In inches (flotation style)31.6x14.0R19
Aspect ratio45%

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 355/45R19 on a 19" wheel

These 19" sizes are within 3% of 355/45R19's overall diameter, the range most tire shops treat as interchangeable.

SizeDiameterWidthDifferenceReal speed at 60
245/65R1931.54"9.65"−0.1%59.9 mphCompare
265/60R1931.52"10.43"−0.2%59.9 mphCompare
315/50R1931.40"12.40"−0.6%59.7 mphCompare
295/55R1931.78"11.61"+0.6%60.4 mphCompare
325/50R1931.80"12.80"+0.7%60.4 mphCompare
285/55R1931.34"11.22"−0.7%59.6 mphCompare
345/45R1931.22"13.58"−1.1%59.3 mphCompare
275/60R1931.99"10.83"+1.3%60.8 mphCompare
255/65R1932.05"10.04"+1.5%60.9 mphCompare
255/60R1931.05"10.04"−1.7%59.0 mphCompare
235/65R1931.03"9.25"−1.7%59.0 mphCompare
305/50R1931.01"12.01"−1.8%58.9 mphCompare

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

SizeWheelDiameterDifference
275/35R2424"31.58"0.0%Compare
245/60R2020"31.57"0.0%Compare
285/65R1717"31.59"0.0%Compare
265/65R1818"31.56"0.0%Compare
335/40R2121"31.55"−0.1%Compare
265/70R1717"31.61"+0.1%Compare
305/40R2222"31.61"+0.1%Compare
245/55R2121"31.61"+0.1%Compare
295/50R2020"31.61"+0.1%Compare
225/65R2020"31.52"−0.2%Compare
325/45R2020"31.52"−0.2%Compare
315/55R1818"31.64"+0.2%Compare

One size up or down

Compare 355/45R19 with another size

With 245/65R19 tires, when your speedometer says 60 mph you are really going

59.9 mph

245/65R19 is −0.04 inches (−0.1%) in overall diameter. That is within the 3% most shops and makers allow.

355/45R19245/65R19Difference%
Overall diameter31.58"31.54"−0.04"−0.1%
Section width13.98"9.65"−4.33"−31.0%
Sidewall height6.29"6.27"−0.02"−0.3%
Circumference99.21"99.08"−0.12"−0.1%
Revolutions per mile638.7639.5+0.8+0.1%

Questions

How tall is a 355/45R19 tire?
A 355/45R19 tire is 31.6 inches tall (802 mm), calculated from the size. It is 14.0 inches wide with 6.3 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
What does 355/45R19 mean?
355/45R19 means a tire 355 mm wide, with sidewalls 45% as tall as the tire is wide (160 mm), radial construction (R), for a 19 inch wheel.
How many revolutions per mile does a 355/45R19 tire make?
About 639 revolutions per mile, based on a circumference of 99.2 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
What rim width fits a 355/45R19 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 245/65R19 instead of 355/45R19?
245/65R19 is −0.04 inches (−0.1%) 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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