155/80R17 tire size
155/80R17 is a metric size: 26.8" tall, 6.1" wide, on a 17" rim — about a 27x6.00R17. The sidewall is 4.9" and the tire turns 754 times per mile.
155/80R17 specs
| Overall diameter (height) | 26.76" · 680 mm |
|---|---|
| Section width | 6.10" · 155 mm |
| Sidewall height | 4.88" · 124 mm (80% of width) |
| Rim diameter | 17" |
| Circumference | 84.08" · 2.136 m |
| Revolutions per mile | 754 (468 per km) |
| Inch (flotation) equivalent | 27x6.00R17 |
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 | |
|---|---|---|---|---|---|
| 225/50R17 common | 25.86" | -3.38% | +70 mm | 58.0 mph | calculate → |
| 225/55R17 common | 26.74" | -0.07% | +70 mm | 60.0 mph | calculate → |
| 235/55R17 common | 27.18" | +1.54% | +80 mm | 60.9 mph | calculate → |
| 215/55R17 common | 26.31" | -1.69% | +60 mm | 59.0 mph | calculate → |
| 225/60R17 common | 27.63" | +3.24% | +70 mm | 61.9 mph | calculate → |
| 215/50R17 common | 25.46" | -4.85% | +60 mm | 57.1 mph | calculate → |
| 245/45R17 common | 25.68" | -4.05% | +90 mm | 57.6 mph | calculate → |
| 215/65R17 common | 28.00" | +4.63% | +60 mm | 62.8 mph | calculate → |
| 215/60R17 common | 27.16" | +1.47% | +60 mm | 60.9 mph | calculate → |
| 235/50R17 common | 26.25" | -1.91% | +80 mm | 58.9 mph | calculate → |
| 205/55R17 | 25.88" | -3.31% | +50 mm | 58.0 mph | calculate → |
| 275/40R17 | 25.66" | -4.12% | +120 mm | 57.5 mph | calculate → |
| 245/50R17 | 26.65" | -0.44% | +90 mm | 59.7 mph | calculate → |
| 255/45R17 | 26.04" | -2.72% | +100 mm | 58.4 mph | calculate → |
| 315/35R17 | 25.68" | -4.05% | +160 mm | 57.6 mph | calculate → |
| 245/55R17 | 27.61" | +3.16% | +90 mm | 61.9 mph | calculate → |
| 335/35R17 | 26.23" | -1.99% | +180 mm | 58.8 mph | calculate → |
| 255/50R17 | 27.04" | +1.03% | +100 mm | 60.6 mph | calculate → |
| 195/60R17 | 26.21" | -2.06% | +40 mm | 58.8 mph | calculate → |
| 165/80R17 | 27.39" | +2.35% | +10 mm | 61.4 mph | calculate → |
| 285/40R17 | 25.98" | -2.94% | +130 mm | 58.2 mph | calculate → |
| 305/45R17 | 27.81" | +3.90% | +150 mm | 62.3 mph | calculate → |
| 155/70R17 | 25.54" | -4.56% | 0 mm | 57.3 mph | calculate → |
| 155/90R17 | 27.98" | +4.56% | 0 mm | 62.7 mph | calculate → |
| 255/55R17 | 28.04" | +4.78% | +100 mm | 62.9 mph | calculate → |
| 145/80R17 | 26.13" | -2.35% | -10 mm | 58.6 mph | calculate → |
| 175/65R17 | 25.96" | -3.02% | +20 mm | 58.2 mph | calculate → |
| 145/90R17 | 27.28" | +1.91% | -10 mm | 61.1 mph | calculate → |
| 26x6.00R17 | 26.00" | -2.85% | -3 mm | 58.3 mph | calculate → |
| 185/60R17 | 25.74" | -3.82% | +30 mm | 57.7 mph | calculate → |
| 275/50R17 | 27.83" | +3.97% | +120 mm | 62.4 mph | calculate → |
| 28x6.00R17 | 28.00" | +4.62% | -3 mm | 62.8 mph | calculate → |
| 205/60R17 | 26.69" | -0.29% | +50 mm | 59.8 mph | calculate → |
| 295/40R17 | 26.29" | -1.77% | +140 mm | 58.9 mph | calculate → |
| 165/70R17 | 26.09" | -2.50% | +10 mm | 58.5 mph | calculate → |
| 205/65R17 | 27.49" | +2.72% | +50 mm | 61.6 mph | calculate → |
| 345/40R17 | 27.87" | +4.12% | +190 mm | 62.5 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 | |
|---|---|---|---|---|---|
| 245/45R18 common | 26.68" | -0.31% | +90 mm | 59.8 mph | calculate → |
| 225/50R18 common | 26.86" | +0.35% | +70 mm | 60.2 mph | calculate → |
| 215/65R16 common | 27.00" | +0.90% | +60 mm | 60.5 mph | calculate → |
| 225/60R16 common | 26.63" | -0.50% | +70 mm | 59.7 mph | calculate → |
| 275/40R18 common | 26.66" | -0.38% | +120 mm | 59.8 mph | calculate → |
| 285/40R18 | 26.98" | +0.79% | +130 mm | 60.5 mph | calculate → |
| 155/90R16 | 26.98" | +0.82% | 0 mm | 60.5 mph | calculate → |
| 325/35R18 | 26.96" | +0.72% | +170 mm | 60.4 mph | calculate → |
| 155/70R18 | 26.54" | -0.82% | 0 mm | 59.5 mph | calculate → |
| 315/35R18 | 26.68" | -0.31% | +160 mm | 59.8 mph | calculate → |
Try another size against 155/80R17
Questions
What size is 155/80R17 in inches?
155/80R17 is about 26.8" tall and 6.1" wide on a 17-inch rim — roughly a 27x6.00R17 in inch sizing.
What does 155/80R17 mean?
155 mm section width, sidewall 80% of the width (4.88"), radial construction, 17-inch rim.
What tire sizes are equivalent to 155/80R17?
On the same 17" rim, within 3% of the diameter: 225/55R17 (-0.07%), 205/60R17 (-0.29%), 245/50R17 (-0.44%), 255/50R17 (+1.03%), 215/60R17 (+1.47%), 235/55R17 (+1.54%).
How many revolutions per mile does a 155/80R17 tire make?
About 754 revolutions per mile (circumference 84.1").
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.