Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/80-13 | 145/80-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.13 (562.2) | 21.13 (536.8) | -1 (-25.4) -4.5% |
| Width inches (mm) | 5.71 (145) | 5.71 (145) | 0 (0) 0% |
| Circum. inches (mm) | 69.54 (1766.2) | 66.39 (1686.41) | -3.14 (-79.8) -4.5% |
| Sidewall Height inches (mm) | 4.57 (116) | 4.57 (116) | 0 (0) 0% |
| Revolutions per mile (km) | 911.19 (566.19) | 954.3 (592.98) | 43.12 (26.79) 4.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.1 mph (30.73 km/h) |
| 25 mph (40.23 km/h) | 23.87 mph (38.42 km/h) |
| 30 mph (48.28 km/h) | 28.64 mph (46.1 km/h) |
| 35 mph (56.33 km/h) | 33.42 mph (53.78 km/h) |
| 40 mph (64.37 km/h) | 38.19 mph (61.47 km/h) |
| 45 mph (72.42 km/h) | 42.97 mph (69.15 km/h) |
| 50 mph (80.47 km/h) | 47.74 mph (76.83 km/h) |
| 55 mph (88.51 km/h) | 52.52 mph (84.52 km/h) |
| 60 mph (96.56 km/h) | 57.29 mph (92.2 km/h) |
| 65 mph (104.61 km/h) | 62.06 mph (99.88 km/h) |
| 70 mph (112.65 km/h) | 66.84 mph (107.56 km/h) |
| 75 mph (120.7 km/h) | 71.61 mph (115.25 km/h) |
| 80 mph (128.75 km/h) | 76.39 mph (122.93 km/h) |
| 85 mph (136.79 km/h) | 81.16 mph (130.61 km/h) |
| 90 mph (144.84 km/h) | 85.93 mph (138.3 km/h) |
| 95 mph (152.89 km/h) | 90.71 mph (145.98 km/h) |
| 100 mph (160.93 km/h) | 95.48 mph (153.66 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
