Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/60-15 | 145/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.85 (555) | 24.13 (613) | 2.28 (58) 10.5% |
| Width inches (mm) | 5.71 (145) | 5.71 (145) | 0 (0) 0% |
| Circum. inches (mm) | 68.65 (1743.58) | 75.82 (1925.8) | 7.17 (182.21) 10.5% |
| Sidewall Height inches (mm) | 3.43 (87) | 4.57 (116) | 1.14 (29) 33.3% |
| Revolutions per mile (km) | 923.01 (573.53) | 835.68 (519.26) | -87.33 (-54.27) -9.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.09 mph (35.55 km/h) |
| 25 mph (40.23 km/h) | 27.61 mph (44.44 km/h) |
| 30 mph (48.28 km/h) | 33.14 mph (53.33 km/h) |
| 35 mph (56.33 km/h) | 38.66 mph (62.21 km/h) |
| 40 mph (64.37 km/h) | 44.18 mph (71.1 km/h) |
| 45 mph (72.42 km/h) | 49.7 mph (79.99 km/h) |
| 50 mph (80.47 km/h) | 55.23 mph (88.88 km/h) |
| 55 mph (88.51 km/h) | 60.75 mph (97.76 km/h) |
| 60 mph (96.56 km/h) | 66.27 mph (106.65 km/h) |
| 65 mph (104.61 km/h) | 71.79 mph (115.54 km/h) |
| 70 mph (112.65 km/h) | 77.32 mph (124.43 km/h) |
| 75 mph (120.7 km/h) | 82.84 mph (133.31 km/h) |
| 80 mph (128.75 km/h) | 88.36 mph (142.2 km/h) |
| 85 mph (136.79 km/h) | 93.88 mph (151.09 km/h) |
| 90 mph (144.84 km/h) | 99.41 mph (159.98 km/h) |
| 95 mph (152.89 km/h) | 104.93 mph (168.87 km/h) |
| 100 mph (160.93 km/h) | 110.45 mph (177.75 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2127 | 2471 | 2661 | 2778 | 2905 | 2995 | 3095 | 3213 | 3375 | 3538 | 3719 | 3864 | 4127 | 4416 | 4642 | 4787 | 4869 | 5167 | 5584 | 6489 |
Better Fuel Economy Factory Ratios Increased Power
