Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/60-13 | 120/60-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.85 (504.2) | 17.67 (448.8) | -2.18 (-55.4) -11% |
| Width inches (mm) | 5.71 (145) | 4.72 (120) | -0.98 (-25) -17.2% |
| Circum. inches (mm) | 62.36 (1583.99) | 55.51 (1409.95) | -6.85 (-174.04) -11% |
| Sidewall Height inches (mm) | 3.43 (87) | 2.83 (72) | -0.59 (-15) -17.2% |
| Revolutions per mile (km) | 1016.01 (631.32) | 1141.42 (709.25) | 125.42 (77.93) 12.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.8 mph (28.65 km/h) |
| 25 mph (40.23 km/h) | 22.25 mph (35.81 km/h) |
| 30 mph (48.28 km/h) | 26.7 mph (42.98 km/h) |
| 35 mph (56.33 km/h) | 31.15 mph (50.14 km/h) |
| 40 mph (64.37 km/h) | 35.6 mph (57.3 km/h) |
| 45 mph (72.42 km/h) | 40.06 mph (64.46 km/h) |
| 50 mph (80.47 km/h) | 44.51 mph (71.63 km/h) |
| 55 mph (88.51 km/h) | 48.96 mph (78.79 km/h) |
| 60 mph (96.56 km/h) | 53.41 mph (85.95 km/h) |
| 65 mph (104.61 km/h) | 57.86 mph (93.11 km/h) |
| 70 mph (112.65 km/h) | 62.31 mph (100.28 km/h) |
| 75 mph (120.7 km/h) | 66.76 mph (107.44 km/h) |
| 80 mph (128.75 km/h) | 71.21 mph (114.6 km/h) |
| 85 mph (136.79 km/h) | 75.66 mph (121.76 km/h) |
| 90 mph (144.84 km/h) | 80.11 mph (128.93 km/h) |
| 95 mph (152.89 km/h) | 84.56 mph (136.09 km/h) |
| 100 mph (160.93 km/h) | 89.01 mph (143.25 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
