Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 205/80-12 | 27/10-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.91 (632.8) | 27 (685.8) | 2.09 (53) 8.4% |
| Width inches (mm) | 8.07 (205) | 10 (254) | 1.93 (49) 23.9% |
| Circum. inches (mm) | 78.27 (1988) | 84.82 (2154.5) | 6.56 (166.5) 8.4% |
| Sidewall Height inches (mm) | 6.46 (164) | 7.5 (190.5) | 1.04 (26.5) 16.2% |
| Revolutions per mile (km) | 809.53 (503.02) | 746.97 (464.14) | -62.56 (-38.87) -7.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.68 mph (34.88 km/h) |
| 25 mph (40.23 km/h) | 27.09 mph (43.6 km/h) |
| 30 mph (48.28 km/h) | 32.51 mph (52.32 km/h) |
| 35 mph (56.33 km/h) | 37.93 mph (61.04 km/h) |
| 40 mph (64.37 km/h) | 43.35 mph (69.77 km/h) |
| 45 mph (72.42 km/h) | 48.77 mph (78.49 km/h) |
| 50 mph (80.47 km/h) | 54.19 mph (87.21 km/h) |
| 55 mph (88.51 km/h) | 59.61 mph (95.93 km/h) |
| 60 mph (96.56 km/h) | 65.03 mph (104.65 km/h) |
| 65 mph (104.61 km/h) | 70.44 mph (113.37 km/h) |
| 70 mph (112.65 km/h) | 75.86 mph (122.09 km/h) |
| 75 mph (120.7 km/h) | 81.28 mph (130.81 km/h) |
| 80 mph (128.75 km/h) | 86.7 mph (139.53 km/h) |
| 85 mph (136.79 km/h) | 92.12 mph (148.25 km/h) |
| 90 mph (144.84 km/h) | 97.54 mph (156.97 km/h) |
| 95 mph (152.89 km/h) | 102.96 mph (165.69 km/h) |
| 100 mph (160.93 km/h) | 108.38 mph (174.41 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1901 | 2208 | 2378 | 2483 | 2597 | 2677 | 2766 | 2872 | 3017 | 3163 | 3325 | 3454 | 3689 | 3947 | 4150 | 4279 | 4352 | 4619 | 4991 | 5800 |
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