255/55R17 tire size
255/55R17 is a metric size: 28.0" tall, 10.0" wide, on a 17" rim — about a 28x10.00R17. The sidewall is 5.5" and the tire turns 719 times per mile.
255/55R17 specs
| Overall diameter (height) | 28.04" · 712 mm |
|---|---|
| Section width | 10.04" · 255 mm |
| Sidewall height | 5.52" · 140 mm (55% of width) |
| Rim diameter | 17" |
| Circumference | 88.10" · 2.238 m |
| Revolutions per mile | 719 (447 per km) |
| Inch (flotation) equivalent | 28x10.00R17 |
Equivalent sizes on a 17" rim
Sizes within ±5% of the overall diameter. Green rows are inside the usual ±3% limit for keeping the speedometer, ABS and gearing right; red rows are bigger changes that need clearance checks.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 225/55R17 common | 26.74" | -4.63% | -30 mm | 57.2 mph | calculate → |
| 225/65R17 common | 28.52" | +1.68% | -30 mm | 61.0 mph | calculate → |
| 235/65R17 common | 29.03" | +3.51% | -20 mm | 62.1 mph | calculate → |
| 235/55R17 common | 27.18" | -3.09% | -20 mm | 58.1 mph | calculate → |
| 225/60R17 common | 27.63" | -1.47% | -30 mm | 59.1 mph | calculate → |
| 235/60R17 common | 28.10" | +0.21% | -20 mm | 60.1 mph | calculate → |
| 215/65R17 common | 28.00" | -0.14% | -40 mm | 59.9 mph | calculate → |
| 215/60R17 common | 27.16" | -3.16% | -40 mm | 58.1 mph | calculate → |
| 245/50R17 | 26.65" | -4.98% | -10 mm | 57.0 mph | calculate → |
| 255/60R17 | 29.05" | +3.58% | 0 mm | 62.1 mph | calculate → |
| 275/55R17 | 28.91" | +3.09% | +20 mm | 61.9 mph | calculate → |
| 245/55R17 | 27.61" | -1.54% | -10 mm | 59.1 mph | calculate → |
| 165/90R17 | 28.69" | +2.32% | -90 mm | 61.4 mph | calculate → |
| 215/70R17 | 28.85" | +2.88% | -40 mm | 61.7 mph | calculate → |
| 155/90R17 | 27.98" | -0.21% | -100 mm | 59.9 mph | calculate → |
| 305/45R17 | 27.81" | -0.84% | +50 mm | 59.5 mph | calculate → |
| 165/80R17 | 27.39" | -2.32% | -90 mm | 58.6 mph | calculate → |
| 255/50R17 | 27.04" | -3.58% | 0 mm | 57.9 mph | calculate → |
| 155/80R17 | 26.76" | -4.56% | -100 mm | 57.3 mph | calculate → |
| 28x6.00R17 | 28.00" | -0.15% | -103 mm | 59.9 mph | calculate → |
| 275/50R17 | 27.83" | -0.77% | +20 mm | 59.5 mph | calculate → |
| 145/90R17 | 27.28" | -2.74% | -110 mm | 58.4 mph | calculate → |
| 175/90R17 | 29.40" | +4.84% | -80 mm | 62.9 mph | calculate → |
| 345/40R17 | 27.87" | -0.63% | +90 mm | 59.6 mph | calculate → |
| 245/60R17 | 28.57" | +1.90% | -10 mm | 61.1 mph | calculate → |
| 205/65R17 | 27.49" | -1.97% | -50 mm | 58.8 mph | calculate → |
| 205/60R17 | 26.69" | -4.84% | -50 mm | 57.1 mph | calculate → |
| 225/70R17 | 29.40" | +4.84% | -30 mm | 62.9 mph | calculate → |
Plus / minus sizing: 16" and 18" rims
Same overall height on a different rim. Check wheel width and clearance before switching.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 235/55R18 common | 28.18" | +0.48% | -20 mm | 60.3 mph | calculate → |
| 215/70R16 common | 27.85" | -0.69% | -40 mm | 59.6 mph | calculate → |
| 235/65R16 common | 28.03" | -0.06% | -20 mm | 60.0 mph | calculate → |
| 205/75R16 | 28.11" | +0.22% | -50 mm | 60.1 mph | calculate → |
| 255/50R18 | 28.04" | -0.01% | 0 mm | 60.0 mph | calculate → |
| 315/40R18 | 27.92" | -0.44% | +60 mm | 59.7 mph | calculate → |
| 215/60R18 | 28.16" | +0.41% | -40 mm | 60.2 mph | calculate → |
| 28x12.00R18 | 28.00" | -0.15% | +50 mm | 59.9 mph | calculate → |
| 285/45R18 | 28.10" | +0.20% | +30 mm | 60.1 mph | calculate → |
| 255/60R16 | 28.05" | +0.01% | 0 mm | 60.0 mph | calculate → |
| 28x10.00R18 | 28.00" | -0.15% | -1 mm | 59.9 mph | calculate → |
| 28x11.50R16 | 28.00" | -0.15% | +37 mm | 59.9 mph | calculate → |
| 195/80R16 | 28.28" | +0.86% | -60 mm | 60.5 mph | calculate → |
Try another size against 255/55R17
Questions
What size is 255/55R17 in inches?
255/55R17 is about 28.0" tall and 10.0" wide on a 17-inch rim — roughly a 28x10.00R17 in inch sizing.
What does 255/55R17 mean?
255 mm section width, sidewall 55% of the width (5.52"), radial construction, 17-inch rim.
What tire sizes are equivalent to 255/55R17?
On the same 17" rim, within 3% of the diameter: 215/65R17 (-0.14%), 28x6.00R17 (-0.15%), 235/60R17 (+0.21%), 155/90R17 (-0.21%), 345/40R17 (-0.63%), 275/50R17 (-0.77%).
How many revolutions per mile does a 255/55R17 tire make?
About 719 revolutions per mile (circumference 88.1").
How these numbers are computed
Diameter = rim + 2 × sidewall, sidewall = width × aspect ÷ 100, circumference = π × diameter, revolutions per mile = 63,360 ÷ circumference. Real tires differ by brand by a few tenths of an inch. Last reviewed October 14, 2026.