285/55R17 tire size in inches

A 285/55R17 tire measures

29.3" tall × 11.2" wide

6.17" sidewall on a 17" wheel. 687 revolutions per mile.

285/55R17 means a tire 285 mm wide, with sidewalls 55% as tall as the tire is wide (157 mm), radial construction (R), for a 17 inch wheel.

29.3"17" rim6.2"11.2" wide
285/55R17: 29.3 inches tall, 11.2 inches wide, on a 17 inch rim, drawn to scale

285/55R17 specs

Overall diameter (height)29.34 inches (745 mm)
Section width11.22 inches (285 mm)
Sidewall height6.17 inches (157 mm)
Wheel (rim) diameter17 inches
Circumference92.2 inches (2,341 mm)
Revolutions per mile687
Revolutions per kilometer427
Approximate rim width8.0" to 9.5"
In inches (flotation style)29.3x11.2R17
Aspect ratio55%

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 285/55R17 on a 17" wheel

These 17" sizes are within 3% of 285/55R17's overall diameter, the range most tire shops treat as interchangeable.

SizeDiameterWidthDifferenceReal speed at 60
225/70R1729.40"8.86"+0.2%60.1 mphCompare
315/50R1729.40"12.40"+0.2%60.1 mphCompare
265/60R1729.52"10.43"+0.6%60.4 mphCompare
245/65R1729.54"9.65"+0.7%60.4 mphCompare
205/75R1729.11"8.07"−0.8%59.5 mphCompare
255/60R1729.05"10.04"−1.0%59.4 mphCompare
235/65R1729.03"9.25"−1.1%59.4 mphCompare
305/50R1729.01"12.01"−1.1%59.3 mphCompare
215/75R1729.70"8.46"+1.2%60.7 mphCompare
275/55R1728.91"10.83"−1.5%59.1 mphCompare
295/55R1729.78"11.61"+1.5%60.9 mphCompare
215/70R1728.85"8.46"−1.7%59.0 mphCompare

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

SizeWheelDiameterDifference
265/40R2121"29.35"0.0%Compare
235/45R2121"29.33"−0.1%Compare
215/55R2020"29.31"−0.1%Compare
265/35R2222"29.30"−0.1%Compare
205/70R1818"29.30"−0.1%Compare
355/30R2121"29.39"+0.1%Compare
215/85R1515"29.39"+0.2%Compare
265/45R2020"29.39"+0.2%Compare
295/40R2020"29.29"−0.2%Compare
225/75R1616"29.29"−0.2%Compare
245/85R1313"29.40"+0.2%Compare
235/40R2222"29.40"+0.2%Compare

One size up or down

Compare 285/55R17 with another size

With 295/55R17 tires, when your speedometer says 60 mph you are really going

60.9 mph

295/55R17 is +0.43 inches (+1.5%) in overall diameter. That is within the 3% most shops and makers allow.

285/55R17295/55R17Difference%
Overall diameter29.34"29.78"+0.43"+1.5%
Section width11.22"11.61"+0.39"+3.5%
Sidewall height6.17"6.39"+0.22"+3.5%
Circumference92.18"93.54"+1.36"+1.5%
Revolutions per mile687.3677.3−10.0−1.5%

Questions

How tall is a 285/55R17 tire?
A 285/55R17 tire is 29.3 inches tall (745 mm), calculated from the size. It is 11.2 inches wide with 6.2 inches sidewalls. Real tires vary by a few tenths of an inch between brands and tread patterns.
What does 285/55R17 mean?
285/55R17 means a tire 285 mm wide, with sidewalls 55% as tall as the tire is wide (157 mm), radial construction (R), for a 17 inch wheel.
How many revolutions per mile does a 285/55R17 tire make?
About 687 revolutions per mile, based on a circumference of 92.2 inches. Under load the tire flattens slightly, so the maker's published figure is usually a little higher.
What rim width fits a 285/55R17 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 225/70R17 instead of 285/55R17?
225/70R17 is +0.06 inches (+0.2%) in overall diameter, so at an indicated 60 mph you would be doing 60.1 mph. Differences under 3% are usually fine, but check clearance, load index and your vehicle's placard.

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