Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 190/55-15 | 400/50-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.23 (590) | 30.75 (781) | 7.52 (191) 32.4% |
| Width inches (mm) | 7.48 (190) | 15.75 (400) | 8.27 (210) 110.5% |
| Circum. inches (mm) | 72.97 (1853.54) | 96.6 (2453.58) | 23.62 (600.04) 32.4% |
| Sidewall Height inches (mm) | 4.11 (104.5) | 7.87 (200) | 3.76 (95.5) 91.4% |
| Revolutions per mile (km) | 868.25 (539.51) | 655.92 (407.57) | -212.34 (-131.94) -24.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 26.47 mph (42.61 km/h) |
| 25 mph (40.23 km/h) | 33.09 mph (53.26 km/h) |
| 30 mph (48.28 km/h) | 39.71 mph (63.91 km/h) |
| 35 mph (56.33 km/h) | 46.33 mph (74.56 km/h) |
| 40 mph (64.37 km/h) | 52.95 mph (85.21 km/h) |
| 45 mph (72.42 km/h) | 59.57 mph (95.87 km/h) |
| 50 mph (80.47 km/h) | 66.19 mph (106.52 km/h) |
| 55 mph (88.51 km/h) | 72.81 mph (117.17 km/h) |
| 60 mph (96.56 km/h) | 79.42 mph (127.82 km/h) |
| 65 mph (104.61 km/h) | 86.04 mph (138.47 km/h) |
| 70 mph (112.65 km/h) | 92.66 mph (149.12 km/h) |
| 75 mph (120.7 km/h) | 99.28 mph (159.78 km/h) |
| 80 mph (128.75 km/h) | 105.9 mph (170.43 km/h) |
| 85 mph (136.79 km/h) | 112.52 mph (181.08 km/h) |
| 90 mph (144.84 km/h) | 119.14 mph (191.73 km/h) |
| 95 mph (152.89 km/h) | 125.75 mph (202.38 km/h) |
| 100 mph (160.93 km/h) | 132.37 mph (213.03 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1669 | 1939 | 2088 | 2181 | 2280 | 2351 | 2429 | 2522 | 2649 | 2777 | 2919 | 3033 | 3239 | 3466 | 3644 | 3757 | 3821 | 4056 | 4382 | 5093 |
Better Fuel Economy Factory Ratios Increased Power
