205/55R17 tire size
205/55R17 is a metric size: 25.9" tall, 8.1" wide, on a 17" rim — about a 26x8.00R17. The sidewall is 4.4" and the tire turns 779 times per mile.
205/55R17 specs
| Overall diameter (height) | 25.88" · 657 mm |
|---|---|
| Section width | 8.07" · 205 mm |
| Sidewall height | 4.44" · 113 mm (55% of width) |
| Rim diameter | 17" |
| Circumference | 81.30" · 2.065 m |
| Revolutions per mile | 779 (484 per km) |
| Inch (flotation) equivalent | 26x8.00R17 |
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 | |
|---|---|---|---|---|---|
| 225/45R17 common | 24.97" | -3.50% | +20 mm | 57.9 mph | compare → |
| 225/50R17 common | 25.86" | -0.08% | +20 mm | 60.0 mph | compare → |
| 225/55R17 common | 26.74" | +3.35% | +20 mm | 62.0 mph | compare → |
| 215/45R17 common | 24.62" | -4.87% | +10 mm | 57.1 mph | compare → |
| 205/50R17 common | 25.07" | -3.12% | 0 mm | 58.1 mph | compare → |
| 215/55R17 common | 26.31" | +1.67% | +10 mm | 61.0 mph | compare → |
| 215/50R17 common | 25.46" | -1.60% | +10 mm | 59.0 mph | compare → |
| 235/45R17 common | 25.33" | -2.13% | +30 mm | 58.7 mph | compare → |
| 245/45R17 common | 25.68" | -0.76% | +40 mm | 59.5 mph | compare → |
| 215/60R17 common | 27.16" | +4.94% | +10 mm | 63.0 mph | compare → |
| 245/40R17 common | 24.72" | -4.49% | +40 mm | 57.3 mph | compare → |
| 235/50R17 common | 26.25" | +1.45% | +30 mm | 60.9 mph | compare → |
| 255/40R17 common | 25.03" | -3.27% | +50 mm | 58.0 mph | compare → |
| 275/40R17 | 25.66" | -0.84% | +70 mm | 59.5 mph | compare → |
| 245/50R17 | 26.65" | +2.97% | +40 mm | 61.8 mph | compare → |
| 255/45R17 | 26.04" | +0.61% | +50 mm | 60.4 mph | compare → |
| 315/35R17 | 25.68" | -0.76% | +110 mm | 59.5 mph | compare → |
| 335/35R17 | 26.23" | +1.37% | +130 mm | 60.8 mph | calculate → |
| 285/40R17 | 25.98" | +0.38% | +80 mm | 60.2 mph | calculate → |
| 155/70R17 | 25.54" | -1.29% | -50 mm | 59.2 mph | calculate → |
| 195/60R17 | 26.21" | +1.29% | -10 mm | 60.8 mph | calculate → |
| 265/40R17 | 25.35" | -2.05% | +60 mm | 58.8 mph | calculate → |
| 255/50R17 | 27.04" | +4.49% | +50 mm | 62.7 mph | calculate → |
| 175/65R17 | 25.96" | +0.30% | -30 mm | 60.2 mph | calculate → |
| 145/80R17 | 26.13" | +0.99% | -60 mm | 60.6 mph | calculate → |
| 295/35R17 | 25.13" | -2.89% | +90 mm | 58.3 mph | calculate → |
| 155/80R17 | 26.76" | +3.42% | -50 mm | 62.1 mph | calculate → |
| 26x6.00R17 | 26.00" | +0.47% | -53 mm | 60.3 mph | calculate → |
| 185/60R17 | 25.74" | -0.53% | -20 mm | 59.7 mph | calculate → |
| 145/70R17 | 24.99" | -3.42% | -60 mm | 57.9 mph | calculate → |
| 165/70R17 | 26.09" | +0.84% | -40 mm | 60.5 mph | calculate → |
| 295/40R17 | 26.29" | +1.60% | +90 mm | 61.0 mph | calculate → |
| 205/60R17 | 26.69" | +3.12% | 0 mm | 61.9 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 | |
|---|---|---|---|---|---|
| 225/45R18 common | 25.97" | +0.37% | +20 mm | 60.2 mph | compare → |
| 245/40R18 common | 25.72" | -0.62% | +40 mm | 59.6 mph | compare → |
| 205/60R16 common | 25.69" | -0.75% | 0 mm | 59.6 mph | compare → |
| 255/40R18 common | 26.03" | +0.59% | +50 mm | 60.4 mph | compare → |
| 225/55R16 | 25.74" | -0.52% | +20 mm | 59.7 mph | compare → |
| 285/35R18 | 25.85" | -0.09% | +80 mm | 59.9 mph | compare → |
| 295/35R18 | 26.13" | +0.97% | +90 mm | 60.6 mph | compare → |
| 335/30R18 | 25.91" | +0.14% | +130 mm | 60.1 mph | compare → |
| 245/50R16 | 25.65" | -0.90% | +40 mm | 59.5 mph | compare → |
| 255/50R16 | 26.04" | +0.62% | +50 mm | 60.4 mph | calculate → |
| 195/65R16 | 25.98" | +0.40% | -10 mm | 60.2 mph | calculate → |
| 275/45R16 | 25.74" | -0.52% | +70 mm | 59.7 mph | calculate → |
| 145/70R18 | 25.99" | +0.44% | -60 mm | 60.3 mph | calculate → |
| 26x12.00R18 | 26.00" | +0.47% | +100 mm | 60.3 mph | calculate → |
| 26x6.00R18 | 26.00" | +0.47% | -53 mm | 60.3 mph | calculate → |
| 26x8.00R18 | 26.00" | +0.47% | -2 mm | 60.3 mph | calculate → |
| 315/40R16 | 25.92" | +0.17% | +110 mm | 60.1 mph | calculate → |
| 26x11.50R16 | 26.00" | +0.47% | +87 mm | 60.3 mph | calculate → |
Try another size against 205/55R17
Questions
What size is 205/55R17 in inches?
205/55R17 is about 25.9" tall and 8.1" wide on a 17-inch rim — roughly a 26x8.00R17 in inch sizing.
What does 205/55R17 mean?
205 mm section width, sidewall 55% of the width (4.44"), radial construction, 17-inch rim.
What tire sizes are equivalent to 205/55R17?
On the same 17" rim, within 3% of the diameter: 225/50R17 (-0.08%), 175/65R17 (+0.30%), 285/40R17 (+0.38%), 26x6.00R17 (+0.47%), 185/60R17 (-0.53%), 255/45R17 (+0.61%).
How many revolutions per mile does a 205/55R17 tire make?
About 779 revolutions per mile (circumference 81.3").
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.