285/50R17 tire size in inches

A 285/50R17 tire measures

28.2" tall × 11.2" wide

5.61" sidewall on a 17" wheel. 715 revolutions per mile.

285/50R17 means a tire 285 mm wide, with sidewalls 50% as tall as the tire is wide (143 mm), radial construction (R), for a 17 inch wheel.

28.2"17" rim5.6"11.2" wide
285/50R17: 28.2 inches tall, 11.2 inches wide, on a 17 inch rim, drawn to scale

285/50R17 specs

Overall diameter (height)28.22 inches (717 mm)
Section width11.22 inches (285 mm)
Sidewall height5.61 inches (143 mm)
Wheel (rim) diameter17 inches
Circumference88.7 inches (2,252 mm)
Revolutions per mile715
Revolutions per kilometer444
Approximate rim width8.0" to 9.5"
In inches (flotation style)28.2x11.2R17
Aspect ratio50%

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 285/50R17 on a 17" wheel

These 17" sizes are within 3% of 285/50R17's overall diameter, the range most tire shops treat as interchangeable.

SizeDiameterWidthDifferenceReal speed at 60
315/45R1728.16"12.40"−0.2%59.9 mphCompare
205/70R1728.30"8.07"+0.3%60.2 mphCompare
235/60R1728.10"9.25"−0.4%59.7 mphCompare
255/55R1728.04"10.04"−0.6%59.6 mphCompare
215/65R1728.00"8.46"−0.8%59.5 mphCompare
265/55R1728.48"10.43"+0.9%60.5 mphCompare
185/75R1727.93"7.28"−1.0%59.4 mphCompare
195/75R1728.52"7.68"+1.0%60.6 mphCompare
225/65R1728.52"8.86"+1.0%60.6 mphCompare
245/60R1728.57"9.65"+1.3%60.8 mphCompare
275/50R1727.83"10.83"−1.4%59.2 mphCompare
295/50R1728.61"11.61"+1.4%60.8 mphCompare

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

SizeWheelDiameterDifference
335/35R1919"28.23"0.0%Compare
305/30R2121"28.20"−0.1%Compare
325/40R1818"28.24"+0.1%Compare
315/25R2222"28.20"−0.1%Compare
235/50R1919"28.25"+0.1%Compare
265/30R2222"28.26"+0.1%Compare
235/55R1818"28.18"−0.2%Compare
225/80R1414"28.17"−0.2%Compare
195/80R1616"28.28"+0.2%Compare
215/60R1818"28.16"−0.2%Compare
225/75R1515"28.29"+0.2%Compare
345/30R2020"28.15"−0.3%Compare

One size up or down

Compare 285/50R17 with another size

With 295/50R17 tires, when your speedometer says 60 mph you are really going

60.8 mph

295/50R17 is +0.39 inches (+1.4%) in overall diameter. That is within the 3% most shops and makers allow.

285/50R17295/50R17Difference%
Overall diameter28.22"28.61"+0.39"+1.4%
Section width11.22"11.61"+0.39"+3.5%
Sidewall height5.61"5.81"+0.20"+3.5%
Circumference88.66"89.89"+1.24"+1.4%
Revolutions per mile714.7704.8−9.8−1.4%

Questions

How tall is a 285/50R17 tire?
A 285/50R17 tire is 28.2 inches tall (717 mm), calculated from the size. It is 11.2 inches wide with 5.6 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
What does 285/50R17 mean?
285/50R17 means a tire 285 mm wide, with sidewalls 50% as tall as the tire is wide (143 mm), radial construction (R), for a 17 inch wheel.
How many revolutions per mile does a 285/50R17 tire make?
About 715 revolutions per mile, based on a circumference of 88.7 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
What rim width fits a 285/50R17 tire?
Roughly 8.0" to 9.5". Check the tire maker's approved rim range for the exact model before buying wheels.
Can I use 315/45R17 instead of 285/50R17?
315/45R17 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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