145/90R16 tire size
145/90R16 is a metric size: 26.3" tall, 5.7" wide, on a 16" rim — about a 26.5x5.50R16. The sidewall is 5.1" and the tire turns 768 times per mile.
145/90R16 specs
| Overall diameter (height) | 26.28" · 667 mm |
|---|---|
| Section width | 5.71" · 145 mm |
| Sidewall height | 5.14" · 131 mm (90% of width) |
| Rim diameter | 16" |
| Circumference | 82.55" · 2.097 m |
| Revolutions per mile | 768 (477 per km) |
| Inch (flotation) equivalent | 26.5x5.50R16 |
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" | +2.77% | +70 mm | 61.7 mph | calculate → |
| 215/55R16 common | 25.31" | -3.67% | +70 mm | 57.8 mph | calculate → |
| 215/60R16 common | 26.16" | -0.45% | +70 mm | 59.7 mph | calculate → |
| 205/60R16 common | 25.69" | -2.25% | +60 mm | 58.7 mph | calculate → |
| 205/65R16 common | 26.49" | +0.82% | +60 mm | 60.5 mph | calculate → |
| 225/60R16 common | 26.63" | +1.35% | +80 mm | 60.8 mph | calculate → |
| 225/65R16 common | 27.52" | +4.72% | +80 mm | 62.8 mph | calculate → |
| 235/60R16 common | 27.10" | +3.15% | +90 mm | 61.9 mph | calculate → |
| 225/55R16 | 25.74" | -2.02% | +80 mm | 58.8 mph | calculate → |
| 195/75R16 | 27.52" | +4.72% | +50 mm | 62.8 mph | calculate → |
| 205/70R16 | 27.30" | +3.90% | +60 mm | 62.3 mph | calculate → |
| 245/50R16 | 25.65" | -2.40% | +100 mm | 58.6 mph | calculate → |
| 195/60R16 | 25.21" | -4.05% | +50 mm | 57.6 mph | calculate → |
| 255/50R16 | 26.04" | -0.90% | +110 mm | 59.5 mph | calculate → |
| 235/55R16 | 26.18" | -0.37% | +90 mm | 59.8 mph | calculate → |
| 155/90R16 | 26.98" | +2.70% | +10 mm | 61.6 mph | calculate → |
| 195/65R16 | 25.98" | -1.12% | +50 mm | 59.3 mph | calculate → |
| 275/45R16 | 25.74" | -2.02% | +130 mm | 58.8 mph | calculate → |
| 26x11.50R16 | 26.00" | -1.05% | +147 mm | 59.4 mph | calculate → |
| 315/40R16 | 25.92" | -1.35% | +170 mm | 59.2 mph | calculate → |
| 265/45R16 | 25.39" | -3.37% | +120 mm | 58.0 mph | calculate → |
| 355/40R16 | 27.18" | +3.45% | +210 mm | 62.1 mph | calculate → |
| 145/80R16 | 25.13" | -4.35% | 0 mm | 57.4 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 | |
|---|---|---|---|---|---|
| 215/55R17 common | 26.31" | +0.13% | +70 mm | 60.1 mph | calculate → |
| 235/50R17 common | 26.25" | -0.09% | +90 mm | 59.9 mph | calculate → |
| 205/70R15 | 26.30" | +0.09% | +60 mm | 60.1 mph | calculate → |
| 255/45R17 | 26.04" | -0.91% | +110 mm | 59.5 mph | calculate → |
| 235/60R15 | 26.10" | -0.66% | +90 mm | 59.6 mph | calculate → |
| 335/35R17 | 26.23" | -0.16% | +190 mm | 59.9 mph | calculate → |
| 195/60R17 | 26.21" | -0.24% | +50 mm | 59.9 mph | calculate → |
| 145/80R17 | 26.13" | -0.54% | 0 mm | 59.7 mph | calculate → |
| 295/40R17 | 26.29" | +0.06% | +150 mm | 60.0 mph | calculate → |
| 165/70R17 | 26.09" | -0.69% | +20 mm | 59.6 mph | calculate → |
Try another size against 145/90R16
Questions
What size is 145/90R16 in inches?
145/90R16 is about 26.3" tall and 5.7" wide on a 16-inch rim — roughly a 26.5x5.50R16 in inch sizing.
What does 145/90R16 mean?
145 mm section width, sidewall 90% of the width (5.14"), radial construction, 16-inch rim.
What tire sizes are equivalent to 145/90R16?
On the same 16" rim, within 3% of the diameter: 235/55R16 (-0.37%), 215/60R16 (-0.45%), 205/65R16 (+0.82%), 255/50R16 (-0.90%), 26x11.50R16 (-1.05%), 195/65R16 (-1.12%).
How many revolutions per mile does a 145/90R16 tire make?
About 768 revolutions per mile (circumference 82.5").
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.