Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-15 | 185/55-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.15 (562.5) | 23.01 (584.5) | 0.87 (22) 3.9% |
| Width inches (mm) | 6.5 (165) | 7.28 (185) | 0.79 (20) 12.1% |
| Circum. inches (mm) | 69.57 (1767.15) | 72.29 (1836.26) | 2.72 (69.12) 3.9% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 4.01 (101.75) | 0.43 (11) 12.1% |
| Revolutions per mile (km) | 910.7 (565.88) | 876.42 (544.58) | -34.28 (-21.3) -3.8% |
185/55-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.78 mph (33.45 km/h) |
| 25 mph (40.23 km/h) | 25.98 mph (41.81 km/h) |
| 30 mph (48.28 km/h) | 31.17 mph (50.17 km/h) |
| 35 mph (56.33 km/h) | 36.37 mph (58.53 km/h) |
| 40 mph (64.37 km/h) | 41.56 mph (66.89 km/h) |
| 45 mph (72.42 km/h) | 46.76 mph (75.25 km/h) |
| 50 mph (80.47 km/h) | 51.96 mph (83.61 km/h) |
| 55 mph (88.51 km/h) | 57.15 mph (91.98 km/h) |
| 60 mph (96.56 km/h) | 62.35 mph (100.34 km/h) |
| 65 mph (104.61 km/h) | 67.54 mph (108.7 km/h) |
| 70 mph (112.65 km/h) | 72.74 mph (117.06 km/h) |
| 75 mph (120.7 km/h) | 77.93 mph (125.42 km/h) |
| 80 mph (128.75 km/h) | 83.13 mph (133.78 km/h) |
| 85 mph (136.79 km/h) | 88.32 mph (142.14 km/h) |
| 90 mph (144.84 km/h) | 93.52 mph (150.51 km/h) |
| 95 mph (152.89 km/h) | 98.72 mph (158.87 km/h) |
| 100 mph (160.93 km/h) | 103.91 mph (167.23 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2230 | 2591 | 2790 | 2914 | 3047 | 3141 | 3246 | 3369 | 3540 | 3711 | 3901 | 4053 | 4328 | 4631 | 4869 | 5021 | 5106 | 5419 | 5856 | 6805 |
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