Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/25-19 | 305/75-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.2 (640.1) | 36.01 (914.7) | 10.81 (274.6) 42.9% |
| Width inches (mm) | 12.4 (315) | 12.01 (305) | -0.39 (-10) -3.2% |
| Circum. inches (mm) | 79.17 (2010.93) | 113.13 (2873.61) | 33.96 (862.68) 42.9% |
| Sidewall Height inches (mm) | 3.1 (78.75) | 9.01 (228.75) | 5.91 (150) 190.5% |
| Revolutions per mile (km) | 800.3 (497.28) | 560.04 (347.99) | -240.26 (-149.29) -30% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 28.58 mph (45.99 km/h) |
| 25 mph (40.23 km/h) | 35.72 mph (57.49 km/h) |
| 30 mph (48.28 km/h) | 42.87 mph (68.99 km/h) |
| 35 mph (56.33 km/h) | 50.01 mph (80.49 km/h) |
| 40 mph (64.37 km/h) | 57.16 mph (91.99 km/h) |
| 45 mph (72.42 km/h) | 64.3 mph (103.49 km/h) |
| 50 mph (80.47 km/h) | 71.45 mph (114.99 km/h) |
| 55 mph (88.51 km/h) | 78.59 mph (126.49 km/h) |
| 60 mph (96.56 km/h) | 85.74 mph (137.98 km/h) |
| 65 mph (104.61 km/h) | 92.88 mph (149.48 km/h) |
| 70 mph (112.65 km/h) | 100.03 mph (160.98 km/h) |
| 75 mph (120.7 km/h) | 107.17 mph (172.48 km/h) |
| 80 mph (128.75 km/h) | 114.32 mph (183.98 km/h) |
| 85 mph (136.79 km/h) | 121.46 mph (195.48 km/h) |
| 90 mph (144.84 km/h) | 128.61 mph (206.98 km/h) |
| 95 mph (152.89 km/h) | 135.75 mph (218.48 km/h) |
| 100 mph (160.93 km/h) | 142.9 mph (229.97 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1425 | 1656 | 1783 | 1862 | 1947 | 2007 | 2074 | 2153 | 2262 | 2371 | 2493 | 2590 | 2765 | 2960 | 3111 | 3208 | 3263 | 3463 | 3742 | 4348 |
Better Fuel Economy Factory Ratios Increased Power
