Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 40/12.5-20 | 295/85-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 40.03 (1016.8) | 39.74 (1009.5) | -0.29 (-7.3) -0.7% |
| Width inches (mm) | 12.52 (318) | 11.61 (295) | -0.91 (-23) -7.2% |
| Circum. inches (mm) | 125.76 (3194.37) | 124.86 (3171.44) | -0.9 (-22.93) -0.7% |
| Sidewall Height inches (mm) | 10.02 (254.4) | 9.87 (250.75) | -0.14 (-3.65) -1.4% |
| Revolutions per mile (km) | 503.81 (313.05) | 507.45 (315.31) | 3.64 (2.26) 0.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.86 mph (31.96 km/h) |
| 25 mph (40.23 km/h) | 24.82 mph (39.94 km/h) |
| 30 mph (48.28 km/h) | 29.78 mph (47.93 km/h) |
| 35 mph (56.33 km/h) | 34.75 mph (55.92 km/h) |
| 40 mph (64.37 km/h) | 39.71 mph (63.91 km/h) |
| 45 mph (72.42 km/h) | 44.68 mph (71.9 km/h) |
| 50 mph (80.47 km/h) | 49.64 mph (79.89 km/h) |
| 55 mph (88.51 km/h) | 54.61 mph (87.88 km/h) |
| 60 mph (96.56 km/h) | 59.57 mph (95.87 km/h) |
| 65 mph (104.61 km/h) | 64.53 mph (103.86 km/h) |
| 70 mph (112.65 km/h) | 69.5 mph (111.85 km/h) |
| 75 mph (120.7 km/h) | 74.46 mph (119.83 km/h) |
| 80 mph (128.75 km/h) | 79.43 mph (127.82 km/h) |
| 85 mph (136.79 km/h) | 84.39 mph (135.81 km/h) |
| 90 mph (144.84 km/h) | 89.35 mph (143.8 km/h) |
| 95 mph (152.89 km/h) | 94.32 mph (151.79 km/h) |
| 100 mph (160.93 km/h) | 99.28 mph (159.78 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1291 | 1500 | 1616 | 1687 | 1764 | 1819 | 1879 | 1951 | 2050 | 2149 | 2259 | 2346 | 2506 | 2682 | 2819 | 2907 | 2956 | 3138 | 3391 | 3940 |
Better Fuel Economy Factory Ratios Increased Power
