Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/60-13 | 140/60-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.85 (504.2) | 18.61 (472.8) | -1.24 (-31.4) -6.2% |
| Width inches (mm) | 5.71 (145) | 5.51 (140) | -0.2 (-5) -3.4% |
| Circum. inches (mm) | 62.36 (1583.99) | 58.48 (1485.35) | -3.88 (-98.65) -6.2% |
| Sidewall Height inches (mm) | 3.43 (87) | 3.31 (84) | -0.12 (-3) -3.4% |
| Revolutions per mile (km) | 1016.01 (631.32) | 1083.48 (673.24) | 67.48 (41.93) 6.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.75 mph (30.18 km/h) |
| 25 mph (40.23 km/h) | 23.44 mph (37.73 km/h) |
| 30 mph (48.28 km/h) | 28.13 mph (45.27 km/h) |
| 35 mph (56.33 km/h) | 32.82 mph (52.82 km/h) |
| 40 mph (64.37 km/h) | 37.51 mph (60.36 km/h) |
| 45 mph (72.42 km/h) | 42.2 mph (67.91 km/h) |
| 50 mph (80.47 km/h) | 46.89 mph (75.46 km/h) |
| 55 mph (88.51 km/h) | 51.57 mph (83 km/h) |
| 60 mph (96.56 km/h) | 56.26 mph (90.55 km/h) |
| 65 mph (104.61 km/h) | 60.95 mph (98.09 km/h) |
| 70 mph (112.65 km/h) | 65.64 mph (105.64 km/h) |
| 75 mph (120.7 km/h) | 70.33 mph (113.18 km/h) |
| 80 mph (128.75 km/h) | 75.02 mph (120.73 km/h) |
| 85 mph (136.79 km/h) | 79.71 mph (128.28 km/h) |
| 90 mph (144.84 km/h) | 84.4 mph (135.82 km/h) |
| 95 mph (152.89 km/h) | 89.08 mph (143.37 km/h) |
| 100 mph (160.93 km/h) | 93.77 mph (150.91 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
