Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/40-10 | 45/90-30 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 18.03 (458) | 33.19 (843) | 15.16 (385) 84.1% |
| Width inches (mm) | 10.04 (255) | 1.77 (45) | -8.27 (-210) -82.4% |
| Circum. inches (mm) | 56.65 (1438.85) | 104.27 (2648.36) | 47.62 (1209.51) 84.1% |
| Sidewall Height inches (mm) | 4.02 (102) | 1.59 (40.5) | -2.42 (-61.5) -60.3% |
| Revolutions per mile (km) | 1118.49 (695) | 607.68 (377.59) | -510.82 (-317.41) -45.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 36.81 mph (59.24 km/h) |
| 25 mph (40.23 km/h) | 46.02 mph (74.05 km/h) |
| 30 mph (48.28 km/h) | 55.22 mph (88.87 km/h) |
| 35 mph (56.33 km/h) | 64.42 mph (103.68 km/h) |
| 40 mph (64.37 km/h) | 73.62 mph (118.49 km/h) |
| 45 mph (72.42 km/h) | 82.83 mph (133.3 km/h) |
| 50 mph (80.47 km/h) | 92.03 mph (148.11 km/h) |
| 55 mph (88.51 km/h) | 101.23 mph (162.92 km/h) |
| 60 mph (96.56 km/h) | 110.44 mph (177.73 km/h) |
| 65 mph (104.61 km/h) | 119.64 mph (192.54 km/h) |
| 70 mph (112.65 km/h) | 128.84 mph (207.35 km/h) |
| 75 mph (120.7 km/h) | 138.05 mph (222.16 km/h) |
| 80 mph (128.75 km/h) | 147.25 mph (236.97 km/h) |
| 85 mph (136.79 km/h) | 156.45 mph (251.79 km/h) |
| 90 mph (144.84 km/h) | 165.66 mph (266.6 km/h) |
| 95 mph (152.89 km/h) | 174.86 mph (281.41 km/h) |
| 100 mph (160.93 km/h) | 184.06 mph (296.22 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1546 | 1796 | 1935 | 2020 | 2112 | 2178 | 2251 | 2336 | 2455 | 2573 | 2705 | 2810 | 3001 | 3211 | 3376 | 3481 | 3540 | 3757 | 4060 | 4718 |
Better Fuel Economy Factory Ratios Increased Power
