Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/60-16 | 185/55-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.5 (622.4) | 24.01 (609.9) | -0.49 (-12.5) -2% |
| Width inches (mm) | 7.09 (180) | 7.28 (185) | 0.2 (5) 2.8% |
| Circum. inches (mm) | 76.98 (1955.33) | 75.44 (1916.06) | -1.55 (-39.27) -2% |
| Sidewall Height inches (mm) | 4.25 (108) | 4.01 (101.75) | -0.25 (-6.25) -5.8% |
| Revolutions per mile (km) | 823.06 (511.42) | 839.92 (521.9) | 16.87 (10.48) 2% |
185/55-16 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.6 mph (31.54 km/h) |
| 25 mph (40.23 km/h) | 24.5 mph (39.43 km/h) |
| 30 mph (48.28 km/h) | 29.4 mph (47.31 km/h) |
| 35 mph (56.33 km/h) | 34.3 mph (55.2 km/h) |
| 40 mph (64.37 km/h) | 39.2 mph (63.08 km/h) |
| 45 mph (72.42 km/h) | 44.1 mph (70.97 km/h) |
| 50 mph (80.47 km/h) | 49 mph (78.85 km/h) |
| 55 mph (88.51 km/h) | 53.9 mph (86.74 km/h) |
| 60 mph (96.56 km/h) | 58.79 mph (94.62 km/h) |
| 65 mph (104.61 km/h) | 63.69 mph (102.51 km/h) |
| 70 mph (112.65 km/h) | 68.59 mph (110.39 km/h) |
| 75 mph (120.7 km/h) | 73.49 mph (118.28 km/h) |
| 80 mph (128.75 km/h) | 78.39 mph (126.16 km/h) |
| 85 mph (136.79 km/h) | 83.29 mph (134.05 km/h) |
| 90 mph (144.84 km/h) | 88.19 mph (141.93 km/h) |
| 95 mph (152.89 km/h) | 93.09 mph (149.82 km/h) |
| 100 mph (160.93 km/h) | 97.99 mph (157.7 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2137 | 2483 | 2674 | 2792 | 2920 | 3011 | 3111 | 3229 | 3393 | 3556 | 3738 | 3884 | 4148 | 4439 | 4666 | 4812 | 4893 | 5194 | 5612 | 6521 |
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