Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/65-14 | 145/55-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.42 (544.1) | 18.28 (464.3) | -3.14 (-79.8) -14.7% |
| Width inches (mm) | 5.71 (145) | 5.71 (145) | 0 (0) 0% |
| Circum. inches (mm) | 67.3 (1709.34) | 57.43 (1458.64) | -9.87 (-250.7) -14.7% |
| Sidewall Height inches (mm) | 3.71 (94.25) | 3.14 (79.75) | -0.57 (-14.5) -15.4% |
| Revolutions per mile (km) | 941.5 (585.02) | 1103.32 (685.57) | 161.82 (100.55) 17.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.07 mph (27.47 km/h) |
| 25 mph (40.23 km/h) | 21.33 mph (34.33 km/h) |
| 30 mph (48.28 km/h) | 25.6 mph (41.2 km/h) |
| 35 mph (56.33 km/h) | 29.87 mph (48.07 km/h) |
| 40 mph (64.37 km/h) | 34.13 mph (54.93 km/h) |
| 45 mph (72.42 km/h) | 38.4 mph (61.8 km/h) |
| 50 mph (80.47 km/h) | 42.67 mph (68.67 km/h) |
| 55 mph (88.51 km/h) | 46.93 mph (75.53 km/h) |
| 60 mph (96.56 km/h) | 51.2 mph (82.4 km/h) |
| 65 mph (104.61 km/h) | 55.47 mph (89.27 km/h) |
| 70 mph (112.65 km/h) | 59.73 mph (96.13 km/h) |
| 75 mph (120.7 km/h) | 64 mph (103 km/h) |
| 80 mph (128.75 km/h) | 68.27 mph (109.87 km/h) |
| 85 mph (136.79 km/h) | 72.53 mph (116.73 km/h) |
| 90 mph (144.84 km/h) | 76.8 mph (123.6 km/h) |
| 95 mph (152.89 km/h) | 81.07 mph (130.46 km/h) |
| 100 mph (160.93 km/h) | 85.33 mph (137.33 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
