Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 190/55-15 | 445/50-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.23 (590) | 32.52 (826) | 9.29 (236) 40% |
| Width inches (mm) | 7.48 (190) | 17.52 (445) | 10.04 (255) 134.2% |
| Circum. inches (mm) | 72.97 (1853.54) | 102.16 (2594.96) | 29.19 (741.42) 40% |
| Sidewall Height inches (mm) | 4.11 (104.5) | 8.76 (222.5) | 4.65 (118) 112.9% |
| Revolutions per mile (km) | 868.25 (539.51) | 620.18 (385.36) | -248.07 (-154.14) -28.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 28 mph (45.06 km/h) |
| 25 mph (40.23 km/h) | 35 mph (56.33 km/h) |
| 30 mph (48.28 km/h) | 42 mph (67.59 km/h) |
| 35 mph (56.33 km/h) | 49 mph (78.86 km/h) |
| 40 mph (64.37 km/h) | 56 mph (90.12 km/h) |
| 45 mph (72.42 km/h) | 63 mph (101.39 km/h) |
| 50 mph (80.47 km/h) | 70 mph (112.65 km/h) |
| 55 mph (88.51 km/h) | 77 mph (123.92 km/h) |
| 60 mph (96.56 km/h) | 84 mph (135.19 km/h) |
| 65 mph (104.61 km/h) | 91 mph (146.45 km/h) |
| 70 mph (112.65 km/h) | 98 mph (157.72 km/h) |
| 75 mph (120.7 km/h) | 105 mph (168.98 km/h) |
| 80 mph (128.75 km/h) | 112 mph (180.25 km/h) |
| 85 mph (136.79 km/h) | 119 mph (191.51 km/h) |
| 90 mph (144.84 km/h) | 126 mph (202.78 km/h) |
| 95 mph (152.89 km/h) | 133 mph (214.04 km/h) |
| 100 mph (160.93 km/h) | 140 mph (225.31 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1578 | 1833 | 1974 | 2062 | 2156 | 2223 | 2297 | 2384 | 2505 | 2626 | 2760 | 2868 | 3062 | 3277 | 3445 | 3553 | 3613 | 3835 | 4144 | 4815 |
Better Fuel Economy Factory Ratios Increased Power
