Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/45-15 | 280/40-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.04 (610.5) | 23.82 (605) | -0.22 (-5.5) -0.9% |
| Width inches (mm) | 10.04 (255) | 11.02 (280) | 0.98 (25) 9.8% |
| Circum. inches (mm) | 75.51 (1917.94) | 74.83 (1900.66) | -0.68 (-17.28) -0.9% |
| Sidewall Height inches (mm) | 4.52 (114.75) | 4.41 (112) | -0.11 (-2.75) -2.4% |
| Revolutions per mile (km) | 839.1 (521.39) | 846.73 (526.13) | 7.63 (4.74) 0.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.82 mph (31.9 km/h) |
| 25 mph (40.23 km/h) | 24.77 mph (39.87 km/h) |
| 30 mph (48.28 km/h) | 29.73 mph (47.85 km/h) |
| 35 mph (56.33 km/h) | 34.68 mph (55.82 km/h) |
| 40 mph (64.37 km/h) | 39.64 mph (63.79 km/h) |
| 45 mph (72.42 km/h) | 44.59 mph (71.77 km/h) |
| 50 mph (80.47 km/h) | 49.55 mph (79.74 km/h) |
| 55 mph (88.51 km/h) | 54.5 mph (87.72 km/h) |
| 60 mph (96.56 km/h) | 59.46 mph (95.69 km/h) |
| 65 mph (104.61 km/h) | 64.41 mph (103.67 km/h) |
| 70 mph (112.65 km/h) | 69.37 mph (111.64 km/h) |
| 75 mph (120.7 km/h) | 74.32 mph (119.61 km/h) |
| 80 mph (128.75 km/h) | 79.28 mph (127.59 km/h) |
| 85 mph (136.79 km/h) | 84.23 mph (135.56 km/h) |
| 90 mph (144.84 km/h) | 89.19 mph (143.54 km/h) |
| 95 mph (152.89 km/h) | 94.14 mph (151.51 km/h) |
| 100 mph (160.93 km/h) | 99.1 mph (159.48 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2155 | 2503 | 2696 | 2815 | 2943 | 3035 | 3136 | 3255 | 3420 | 3585 | 3769 | 3915 | 4181 | 4475 | 4704 | 4851 | 4933 | 5236 | 5657 | 6574 |
Better Fuel Economy Factory Ratios Increased Power
