155/90R17 tire size
155/90R17 is a metric size: 28.0" tall, 6.1" wide, on a 17" rim — about a 28x6.00R17. The sidewall is 5.5" and the tire turns 721 times per mile.
155/90R17 specs
| Overall diameter (height) | 27.98" · 711 mm |
|---|---|
| Section width | 6.10" · 155 mm |
| Sidewall height | 5.49" · 140 mm (90% of width) |
| Rim diameter | 17" |
| Circumference | 87.92" · 2.233 m |
| Revolutions per mile | 721 (448 per km) |
| Inch (flotation) equivalent | 28x6.00R17 |
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" | -4.43% | +70 mm | 57.3 mph | calculate → |
| 225/65R17 common | 28.52" | +1.90% | +70 mm | 61.1 mph | calculate → |
| 235/65R17 common | 29.03" | +3.73% | +80 mm | 62.2 mph | calculate → |
| 235/55R17 common | 27.18" | -2.88% | +80 mm | 58.3 mph | calculate → |
| 225/60R17 common | 27.63" | -1.27% | +70 mm | 59.2 mph | calculate → |
| 235/60R17 common | 28.10" | +0.42% | +80 mm | 60.3 mph | calculate → |
| 215/65R17 common | 28.00" | +0.07% | +60 mm | 60.0 mph | calculate → |
| 215/60R17 common | 27.16" | -2.95% | +60 mm | 58.2 mph | calculate → |
| 245/50R17 | 26.65" | -4.78% | +90 mm | 57.1 mph | calculate → |
| 255/60R17 | 29.05" | +3.80% | +100 mm | 62.3 mph | calculate → |
| 275/55R17 | 28.91" | +3.31% | +120 mm | 62.0 mph | calculate → |
| 245/55R17 | 27.61" | -1.34% | +90 mm | 59.2 mph | calculate → |
| 165/90R17 | 28.69" | +2.53% | +10 mm | 61.5 mph | calculate → |
| 215/70R17 | 28.85" | +3.10% | +60 mm | 61.9 mph | calculate → |
| 255/55R17 | 28.04" | +0.21% | +100 mm | 60.1 mph | calculate → |
| 305/45R17 | 27.81" | -0.63% | +150 mm | 59.6 mph | calculate → |
| 165/80R17 | 27.39" | -2.11% | +10 mm | 58.7 mph | calculate → |
| 255/50R17 | 27.04" | -3.38% | +100 mm | 58.0 mph | calculate → |
| 155/80R17 | 26.76" | -4.36% | 0 mm | 57.4 mph | calculate → |
| 28x6.00R17 | 28.00" | +0.06% | -3 mm | 60.0 mph | calculate → |
| 275/50R17 | 27.83" | -0.56% | +120 mm | 59.7 mph | calculate → |
| 145/90R17 | 27.28" | -2.53% | -10 mm | 58.5 mph | calculate → |
| 345/40R17 | 27.87" | -0.42% | +190 mm | 59.7 mph | calculate → |
| 205/65R17 | 27.49" | -1.76% | +50 mm | 58.9 mph | calculate → |
| 245/60R17 | 28.57" | +2.11% | +90 mm | 61.3 mph | calculate → |
| 205/60R17 | 26.69" | -4.64% | +50 mm | 57.2 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" | +0.69% | +80 mm | 60.4 mph | calculate → |
| 225/55R18 common | 27.74" | -0.86% | +70 mm | 59.5 mph | calculate → |
| 215/70R16 common | 27.85" | -0.48% | +60 mm | 59.7 mph | calculate → |
| 235/65R16 common | 28.03" | +0.15% | +80 mm | 60.1 mph | calculate → |
| 275/45R18 | 27.74" | -0.86% | +120 mm | 59.5 mph | calculate → |
| 205/75R16 | 28.11" | +0.44% | +50 mm | 60.3 mph | calculate → |
| 255/50R18 | 28.04" | +0.20% | +100 mm | 60.1 mph | calculate → |
| 315/40R18 | 27.92" | -0.23% | +160 mm | 59.9 mph | calculate → |
| 215/60R18 | 28.16" | +0.62% | +60 mm | 60.4 mph | calculate → |
| 28x12.00R18 | 28.00" | +0.06% | +150 mm | 60.0 mph | calculate → |
| 285/45R18 | 28.10" | +0.41% | +130 mm | 60.2 mph | calculate → |
| 145/85R18 | 27.70" | -1.00% | -10 mm | 59.4 mph | calculate → |
| 28x10.00R18 | 28.00" | +0.06% | +99 mm | 60.0 mph | calculate → |
| 28x11.50R16 | 28.00" | +0.06% | +137 mm | 60.0 mph | calculate → |
| 255/60R16 | 28.05" | +0.23% | +100 mm | 60.1 mph | calculate → |
Try another size against 155/90R17
Questions
What size is 155/90R17 in inches?
155/90R17 is about 28.0" tall and 6.1" wide on a 17-inch rim — roughly a 28x6.00R17 in inch sizing.
What does 155/90R17 mean?
155 mm section width, sidewall 90% of the width (5.49"), radial construction, 17-inch rim.
What tire sizes are equivalent to 155/90R17?
On the same 17" rim, within 3% of the diameter: 28x6.00R17 (+0.06%), 215/65R17 (+0.07%), 255/55R17 (+0.21%), 235/60R17 (+0.42%), 345/40R17 (-0.42%), 275/50R17 (-0.56%).
How many revolutions per mile does a 155/90R17 tire make?
About 721 revolutions per mile (circumference 87.9").
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.