Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/80-10 | 186/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.13 (486) | 24.52 (622.8) | 5.39 (136.8) 28.1% |
| Width inches (mm) | 5.71 (145) | 7.32 (186) | 1.61 (41) 28.3% |
| Circum. inches (mm) | 60.11 (1526.81) | 77.03 (1956.58) | 16.92 (429.77) 28.1% |
| Sidewall Height inches (mm) | 4.57 (116) | 4.76 (120.9) | 0.19 (4.9) 4.2% |
| Revolutions per mile (km) | 1054.05 (654.96) | 822.53 (511.09) | -231.53 (-143.86) -22% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.63 mph (41.25 km/h) |
| 25 mph (40.23 km/h) | 32.04 mph (51.56 km/h) |
| 30 mph (48.28 km/h) | 38.44 mph (61.87 km/h) |
| 35 mph (56.33 km/h) | 44.85 mph (72.18 km/h) |
| 40 mph (64.37 km/h) | 51.26 mph (82.49 km/h) |
| 45 mph (72.42 km/h) | 57.67 mph (92.81 km/h) |
| 50 mph (80.47 km/h) | 64.07 mph (103.12 km/h) |
| 55 mph (88.51 km/h) | 70.48 mph (113.43 km/h) |
| 60 mph (96.56 km/h) | 76.89 mph (123.74 km/h) |
| 65 mph (104.61 km/h) | 83.3 mph (134.05 km/h) |
| 70 mph (112.65 km/h) | 89.7 mph (144.36 km/h) |
| 75 mph (120.7 km/h) | 96.11 mph (154.68 km/h) |
| 80 mph (128.75 km/h) | 102.52 mph (164.99 km/h) |
| 85 mph (136.79 km/h) | 108.93 mph (175.3 km/h) |
| 90 mph (144.84 km/h) | 115.33 mph (185.61 km/h) |
| 95 mph (152.89 km/h) | 121.74 mph (195.92 km/h) |
| 100 mph (160.93 km/h) | 128.15 mph (206.23 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2093 | 2432 | 2619 | 2734 | 2859 | 2948 | 3046 | 3162 | 3322 | 3483 | 3661 | 3803 | 4062 | 4347 | 4569 | 4712 | 4792 | 5086 | 5496 | 6386 |
Better Fuel Economy Factory Ratios Increased Power
