Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/25-19 | 285/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.2 (640.1) | 32.95 (837) | 7.75 (196.9) 30.8% |
| Width inches (mm) | 12.4 (315) | 11.22 (285) | -1.18 (-30) -9.5% |
| Circum. inches (mm) | 79.17 (2010.93) | 103.52 (2629.51) | 24.35 (618.58) 30.8% |
| Sidewall Height inches (mm) | 3.1 (78.75) | 8.98 (228) | 5.88 (149.25) 189.5% |
| Revolutions per mile (km) | 800.3 (497.28) | 612.03 (380.3) | -188.27 (-116.98) -23.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 26.15 mph (42.09 km/h) |
| 25 mph (40.23 km/h) | 32.69 mph (52.61 km/h) |
| 30 mph (48.28 km/h) | 39.23 mph (63.13 km/h) |
| 35 mph (56.33 km/h) | 45.77 mph (73.65 km/h) |
| 40 mph (64.37 km/h) | 52.3 mph (84.18 km/h) |
| 45 mph (72.42 km/h) | 58.84 mph (94.7 km/h) |
| 50 mph (80.47 km/h) | 65.38 mph (105.22 km/h) |
| 55 mph (88.51 km/h) | 71.92 mph (115.74 km/h) |
| 60 mph (96.56 km/h) | 78.46 mph (126.26 km/h) |
| 65 mph (104.61 km/h) | 84.99 mph (136.79 km/h) |
| 70 mph (112.65 km/h) | 91.53 mph (147.31 km/h) |
| 75 mph (120.7 km/h) | 98.07 mph (157.83 km/h) |
| 80 mph (128.75 km/h) | 104.61 mph (168.35 km/h) |
| 85 mph (136.79 km/h) | 111.15 mph (178.87 km/h) |
| 90 mph (144.84 km/h) | 117.68 mph (189.4 km/h) |
| 95 mph (152.89 km/h) | 124.22 mph (199.92 km/h) |
| 100 mph (160.93 km/h) | 130.76 mph (210.44 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1558 | 1809 | 1949 | 2035 | 2127 | 2194 | 2267 | 2353 | 2472 | 2591 | 2724 | 2830 | 3022 | 3234 | 3400 | 3506 | 3566 | 3784 | 4089 | 4752 |
Better Fuel Economy Factory Ratios Increased Power
