Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/65-14 | 145/80-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.42 (544.1) | 21.13 (536.8) | -0.29 (-7.3) -1.3% |
| Width inches (mm) | 5.71 (145) | 5.71 (145) | 0 (0) 0% |
| Circum. inches (mm) | 67.3 (1709.34) | 66.39 (1686.41) | -0.9 (-22.93) -1.3% |
| Sidewall Height inches (mm) | 3.71 (94.25) | 4.57 (116) | 0.86 (21.75) 23.1% |
| Revolutions per mile (km) | 941.5 (585.02) | 954.3 (592.98) | 12.8 (7.96) 1.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.73 mph (31.76 km/h) |
| 25 mph (40.23 km/h) | 24.66 mph (39.69 km/h) |
| 30 mph (48.28 km/h) | 29.6 mph (47.63 km/h) |
| 35 mph (56.33 km/h) | 34.53 mph (55.57 km/h) |
| 40 mph (64.37 km/h) | 39.46 mph (63.51 km/h) |
| 45 mph (72.42 km/h) | 44.4 mph (71.45 km/h) |
| 50 mph (80.47 km/h) | 49.33 mph (79.39 km/h) |
| 55 mph (88.51 km/h) | 54.26 mph (87.33 km/h) |
| 60 mph (96.56 km/h) | 59.2 mph (95.27 km/h) |
| 65 mph (104.61 km/h) | 64.13 mph (103.2 km/h) |
| 70 mph (112.65 km/h) | 69.06 mph (111.14 km/h) |
| 75 mph (120.7 km/h) | 73.99 mph (119.08 km/h) |
| 80 mph (128.75 km/h) | 78.93 mph (127.02 km/h) |
| 85 mph (136.79 km/h) | 83.86 mph (134.96 km/h) |
| 90 mph (144.84 km/h) | 88.79 mph (142.9 km/h) |
| 95 mph (152.89 km/h) | 93.73 mph (150.84 km/h) |
| 100 mph (160.93 km/h) | 98.66 mph (158.78 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
