Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/25-19 | 285/25-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.2 (640.1) | 23.61 (599.7) | -1.59 (-40.4) -6.3% |
| Width inches (mm) | 12.4 (315) | 11.22 (285) | -1.18 (-30) -9.5% |
| Circum. inches (mm) | 79.17 (2010.93) | 74.17 (1884.01) | -5 (-126.92) -6.3% |
| Sidewall Height inches (mm) | 3.1 (78.75) | 2.81 (71.25) | -0.3 (-7.5) -9.5% |
| Revolutions per mile (km) | 800.3 (497.28) | 854.21 (530.78) | 53.91 (33.5) 6.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.74 mph (30.16 km/h) |
| 25 mph (40.23 km/h) | 23.42 mph (37.69 km/h) |
| 30 mph (48.28 km/h) | 28.11 mph (45.23 km/h) |
| 35 mph (56.33 km/h) | 32.79 mph (52.77 km/h) |
| 40 mph (64.37 km/h) | 37.48 mph (60.31 km/h) |
| 45 mph (72.42 km/h) | 42.16 mph (67.85 km/h) |
| 50 mph (80.47 km/h) | 46.84 mph (75.39 km/h) |
| 55 mph (88.51 km/h) | 51.53 mph (82.93 km/h) |
| 60 mph (96.56 km/h) | 56.21 mph (90.47 km/h) |
| 65 mph (104.61 km/h) | 60.9 mph (98.01 km/h) |
| 70 mph (112.65 km/h) | 65.58 mph (105.54 km/h) |
| 75 mph (120.7 km/h) | 70.27 mph (113.08 km/h) |
| 80 mph (128.75 km/h) | 74.95 mph (120.62 km/h) |
| 85 mph (136.79 km/h) | 79.64 mph (128.16 km/h) |
| 90 mph (144.84 km/h) | 84.32 mph (135.7 km/h) |
| 95 mph (152.89 km/h) | 89 mph (143.24 km/h) |
| 100 mph (160.93 km/h) | 93.69 mph (150.78 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2174 | 2525 | 2720 | 2840 | 2969 | 3062 | 3164 | 3284 | 3450 | 3617 | 3802 | 3950 | 4218 | 4514 | 4745 | 4893 | 4977 | 5282 | 5707 | 6632 |
Better Fuel Economy Factory Ratios Increased Power
