Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 445/65-22.5 | 255/75-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 45.28 (1150) | 32.06 (814.3) | -13.22 (-335.7) -29.2% |
| Width inches (mm) | 17.52 (445) | 10.04 (255) | -7.48 (-190) -42.7% |
| Circum. inches (mm) | 142.24 (3612.83) | 100.72 (2558.2) | -41.52 (-1054.63) -29.2% |
| Sidewall Height inches (mm) | 11.39 (289.25) | 7.53 (191.25) | -3.86 (-98) -33.9% |
| Revolutions per mile (km) | 445.45 (276.79) | 629.09 (390.9) | 183.64 (114.11) 41.2% |
255/75-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 14.16 mph (22.79 km/h) |
| 25 mph (40.23 km/h) | 17.7 mph (28.49 km/h) |
| 30 mph (48.28 km/h) | 21.24 mph (34.19 km/h) |
| 35 mph (56.33 km/h) | 24.78 mph (39.88 km/h) |
| 40 mph (64.37 km/h) | 28.32 mph (45.58 km/h) |
| 45 mph (72.42 km/h) | 31.86 mph (51.28 km/h) |
| 50 mph (80.47 km/h) | 35.4 mph (56.98 km/h) |
| 55 mph (88.51 km/h) | 38.94 mph (62.68 km/h) |
| 60 mph (96.56 km/h) | 42.49 mph (68.37 km/h) |
| 65 mph (104.61 km/h) | 46.03 mph (74.07 km/h) |
| 70 mph (112.65 km/h) | 49.57 mph (79.77 km/h) |
| 75 mph (120.7 km/h) | 53.11 mph (85.47 km/h) |
| 80 mph (128.75 km/h) | 56.65 mph (91.16 km/h) |
| 85 mph (136.79 km/h) | 60.19 mph (96.86 km/h) |
| 90 mph (144.84 km/h) | 63.73 mph (102.56 km/h) |
| 95 mph (152.89 km/h) | 67.27 mph (108.26 km/h) |
| 100 mph (160.93 km/h) | 70.81 mph (113.96 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1601 | 1860 | 2003 | 2091 | 2187 | 2255 | 2330 | 2418 | 2541 | 2664 | 2800 | 2909 | 3106 | 3324 | 3495 | 3604 | 3665 | 3890 | 4203 | 4885 |
Better Fuel Economy Factory Ratios Increased Power
