Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/60-13 | 145/40-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.85 (504.2) | 16.57 (420.8) | -3.28 (-83.4) -16.5% |
| Width inches (mm) | 5.71 (145) | 5.71 (145) | 0 (0) 0% |
| Circum. inches (mm) | 62.36 (1583.99) | 52.05 (1321.98) | -10.32 (-262.01) -16.5% |
| Sidewall Height inches (mm) | 3.43 (87) | 2.28 (58) | -1.14 (-29) -33.3% |
| Revolutions per mile (km) | 1016.01 (631.32) | 1217.37 (756.44) | 201.37 (125.12) 19.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 16.69 mph (26.86 km/h) |
| 25 mph (40.23 km/h) | 20.86 mph (33.58 km/h) |
| 30 mph (48.28 km/h) | 25.04 mph (40.29 km/h) |
| 35 mph (56.33 km/h) | 29.21 mph (47.01 km/h) |
| 40 mph (64.37 km/h) | 33.38 mph (53.73 km/h) |
| 45 mph (72.42 km/h) | 37.56 mph (60.44 km/h) |
| 50 mph (80.47 km/h) | 41.73 mph (67.16 km/h) |
| 55 mph (88.51 km/h) | 45.9 mph (73.87 km/h) |
| 60 mph (96.56 km/h) | 50.08 mph (80.59 km/h) |
| 65 mph (104.61 km/h) | 54.25 mph (87.3 km/h) |
| 70 mph (112.65 km/h) | 58.42 mph (94.02 km/h) |
| 75 mph (120.7 km/h) | 62.59 mph (100.74 km/h) |
| 80 mph (128.75 km/h) | 66.77 mph (107.45 km/h) |
| 85 mph (136.79 km/h) | 70.94 mph (114.17 km/h) |
| 90 mph (144.84 km/h) | 75.11 mph (120.88 km/h) |
| 95 mph (152.89 km/h) | 79.29 mph (127.6 km/h) |
| 100 mph (160.93 km/h) | 83.46 mph (134.31 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
