155/90R16 tire size
155/90R16 is a metric size: 27.0" tall, 6.1" wide, on a 16" rim — about a 27x6.00R16. The sidewall is 5.5" and the tire turns 747 times per mile.
155/90R16 specs
| Overall diameter (height) | 26.98" · 685 mm |
|---|---|
| Section width | 6.10" · 155 mm |
| Sidewall height | 5.49" · 140 mm (90% of width) |
| Rim diameter | 16" |
| Circumference | 84.77" · 2.153 m |
| Revolutions per mile | 747 (464 per km) |
| Inch (flotation) equivalent | 27x6.00R16 |
Equivalent sizes on a 16" 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 | |
|---|---|---|---|---|---|
| 215/65R16 common | 27.00" | +0.07% | +60 mm | 60.0 mph | calculate → |
| 215/60R16 common | 26.16" | -3.06% | +60 mm | 58.2 mph | calculate → |
| 205/60R16 common | 25.69" | -4.81% | +50 mm | 57.1 mph | calculate → |
| 215/70R16 common | 27.85" | +3.21% | +60 mm | 61.9 mph | calculate → |
| 205/65R16 common | 26.49" | -1.82% | +50 mm | 58.9 mph | calculate → |
| 235/65R16 common | 28.03" | +3.87% | +80 mm | 62.3 mph | calculate → |
| 225/60R16 common | 26.63" | -1.31% | +70 mm | 59.2 mph | calculate → |
| 225/65R16 common | 27.52" | +1.97% | +70 mm | 61.2 mph | calculate → |
| 235/60R16 common | 27.10" | +0.44% | +80 mm | 60.3 mph | calculate → |
| 225/55R16 | 25.74" | -4.60% | +70 mm | 57.2 mph | calculate → |
| 195/75R16 | 27.52" | +1.97% | +40 mm | 61.2 mph | calculate → |
| 205/70R16 | 27.30" | +1.17% | +50 mm | 60.7 mph | calculate → |
| 245/50R16 | 25.65" | -4.96% | +90 mm | 57.0 mph | calculate → |
| 205/75R16 | 28.11" | +4.16% | +50 mm | 62.5 mph | calculate → |
| 255/50R16 | 26.04" | -3.50% | +100 mm | 57.9 mph | calculate → |
| 145/90R16 | 26.28" | -2.63% | -10 mm | 58.4 mph | calculate → |
| 235/55R16 | 26.18" | -2.99% | +80 mm | 58.2 mph | calculate → |
| 195/65R16 | 25.98" | -3.72% | +40 mm | 57.8 mph | calculate → |
| 275/45R16 | 25.74" | -4.60% | +120 mm | 57.2 mph | calculate → |
| 355/40R16 | 27.18" | +0.73% | +200 mm | 60.4 mph | calculate → |
| 295/50R16 | 27.61" | +2.33% | +140 mm | 61.4 mph | calculate → |
| 26x11.50R16 | 26.00" | -3.65% | +137 mm | 57.8 mph | calculate → |
| 28x11.50R16 | 28.00" | +3.76% | +137 mm | 62.3 mph | calculate → |
| 255/60R16 | 28.05" | +3.94% | +100 mm | 62.4 mph | calculate → |
| 315/40R16 | 25.92" | -3.94% | +160 mm | 57.6 mph | calculate → |
| 195/80R16 | 28.28" | +4.81% | +40 mm | 62.9 mph | calculate → |
Plus / minus sizing: 15" and 17" rims
Same overall height on a different rim. Check wheel width and clearance before switching.
| Size | Diameter | Difference | Width | Speedo at 60 | |
|---|---|---|---|---|---|
| 225/55R17 common | 26.74" | -0.89% | +70 mm | 59.5 mph | calculate → |
| 235/55R17 common | 27.18" | +0.71% | +80 mm | 60.4 mph | calculate → |
| 215/60R17 common | 27.16" | +0.64% | +60 mm | 60.4 mph | calculate → |
| 215/70R15 | 26.85" | -0.50% | +60 mm | 59.7 mph | calculate → |
| 205/75R15 | 27.11" | +0.45% | +50 mm | 60.3 mph | calculate → |
| 255/60R15 | 27.05" | +0.23% | +100 mm | 60.1 mph | calculate → |
| 255/50R17 | 27.04" | +0.20% | +100 mm | 60.1 mph | calculate → |
| 155/80R17 | 26.76" | -0.82% | 0 mm | 59.5 mph | calculate → |
| 27x9.50R15 | 27.00" | +0.06% | +86 mm | 60.0 mph | calculate → |
| 27x10.50R15 | 27.00" | +0.06% | +112 mm | 60.0 mph | calculate → |
| 185R15 | 26.94" | -0.15% | +30 mm | 59.9 mph | calculate → |
| 235/65R15 | 27.03" | +0.16% | +80 mm | 60.1 mph | calculate → |
Try another size against 155/90R16
Questions
What size is 155/90R16 in inches?
155/90R16 is about 27.0" tall and 6.1" wide on a 16-inch rim — roughly a 27x6.00R16 in inch sizing.
What does 155/90R16 mean?
155 mm section width, sidewall 90% of the width (5.49"), radial construction, 16-inch rim.
What tire sizes are equivalent to 155/90R16?
On the same 16" rim, within 3% of the diameter: 215/65R16 (+0.07%), 235/60R16 (+0.44%), 355/40R16 (+0.73%), 205/70R16 (+1.17%), 225/60R16 (-1.31%), 205/65R16 (-1.82%).
How many revolutions per mile does a 155/90R16 tire make?
About 747 revolutions per mile (circumference 84.8").
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.