Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/60-13 | 140/40-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.85 (504.2) | 16.41 (416.8) | -3.44 (-87.4) -17.3% |
| Width inches (mm) | 5.71 (145) | 5.51 (140) | -0.2 (-5) -3.4% |
| Circum. inches (mm) | 62.36 (1583.99) | 51.55 (1309.42) | -10.81 (-274.58) -17.3% |
| Sidewall Height inches (mm) | 3.43 (87) | 2.2 (56) | -1.22 (-31) -35.6% |
| Revolutions per mile (km) | 1016.01 (631.32) | 1229.05 (763.7) | 213.05 (132.38) 21% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 16.53 mph (26.61 km/h) |
| 25 mph (40.23 km/h) | 20.67 mph (33.26 km/h) |
| 30 mph (48.28 km/h) | 24.8 mph (39.91 km/h) |
| 35 mph (56.33 km/h) | 28.93 mph (46.56 km/h) |
| 40 mph (64.37 km/h) | 33.07 mph (53.22 km/h) |
| 45 mph (72.42 km/h) | 37.2 mph (59.87 km/h) |
| 50 mph (80.47 km/h) | 41.33 mph (66.52 km/h) |
| 55 mph (88.51 km/h) | 45.47 mph (73.17 km/h) |
| 60 mph (96.56 km/h) | 49.6 mph (79.82 km/h) |
| 65 mph (104.61 km/h) | 53.73 mph (86.47 km/h) |
| 70 mph (112.65 km/h) | 57.87 mph (93.13 km/h) |
| 75 mph (120.7 km/h) | 62 mph (99.78 km/h) |
| 80 mph (128.75 km/h) | 66.13 mph (106.43 km/h) |
| 85 mph (136.79 km/h) | 70.27 mph (113.08 km/h) |
| 90 mph (144.84 km/h) | 74.4 mph (119.73 km/h) |
| 95 mph (152.89 km/h) | 78.53 mph (126.39 km/h) |
| 100 mph (160.93 km/h) | 82.67 mph (133.04 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
