Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 445/55-19.5 | 285/70-19.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 38.77 (984.8) | 35.21 (894.3) | -3.56 (-90.5) -9.2% |
| Width inches (mm) | 17.52 (445) | 11.22 (285) | -6.3 (-160) -36% |
| Circum. inches (mm) | 121.8 (3093.84) | 110.61 (2809.53) | -11.19 (-284.31) -9.2% |
| Sidewall Height inches (mm) | 9.64 (244.75) | 7.85 (199.5) | -1.78 (-45.25) -18.5% |
| Revolutions per mile (km) | 520.18 (323.22) | 572.82 (355.93) | 52.64 (32.71) 10.1% |
285/70-19.5 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.16 mph (29.23 km/h) |
| 25 mph (40.23 km/h) | 22.7 mph (36.54 km/h) |
| 30 mph (48.28 km/h) | 27.24 mph (43.84 km/h) |
| 35 mph (56.33 km/h) | 31.78 mph (51.15 km/h) |
| 40 mph (64.37 km/h) | 36.32 mph (58.46 km/h) |
| 45 mph (72.42 km/h) | 40.86 mph (65.77 km/h) |
| 50 mph (80.47 km/h) | 45.41 mph (73.07 km/h) |
| 55 mph (88.51 km/h) | 49.95 mph (80.38 km/h) |
| 60 mph (96.56 km/h) | 54.49 mph (87.69 km/h) |
| 65 mph (104.61 km/h) | 59.03 mph (94.99 km/h) |
| 70 mph (112.65 km/h) | 63.57 mph (102.3 km/h) |
| 75 mph (120.7 km/h) | 68.11 mph (109.61 km/h) |
| 80 mph (128.75 km/h) | 72.65 mph (116.92 km/h) |
| 85 mph (136.79 km/h) | 77.19 mph (124.22 km/h) |
| 90 mph (144.84 km/h) | 81.73 mph (131.53 km/h) |
| 95 mph (152.89 km/h) | 86.27 mph (138.84 km/h) |
| 100 mph (160.93 km/h) | 90.81 mph (146.15 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1458 | 1693 | 1824 | 1904 | 1991 | 2053 | 2121 | 2202 | 2314 | 2425 | 2549 | 2649 | 2829 | 3027 | 3182 | 3281 | 3337 | 3542 | 3827 | 4448 |
Better Fuel Economy Factory Ratios Increased Power
