Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/70-17 | 287/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.99 (634.8) | 32.82 (833.6) | 7.83 (198.8) 31.3% |
| Width inches (mm) | 5.71 (145) | 11.3 (287) | 5.59 (142) 97.9% |
| Circum. inches (mm) | 78.52 (1994.28) | 103.1 (2618.83) | 24.59 (624.55) 31.3% |
| Sidewall Height inches (mm) | 4 (101.5) | 7.91 (200.9) | 3.91 (99.4) 97.9% |
| Revolutions per mile (km) | 806.98 (501.43) | 614.53 (381.85) | -192.45 (-119.58) -23.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 26.26 mph (42.27 km/h) |
| 25 mph (40.23 km/h) | 32.83 mph (52.83 km/h) |
| 30 mph (48.28 km/h) | 39.4 mph (63.4 km/h) |
| 35 mph (56.33 km/h) | 45.96 mph (73.97 km/h) |
| 40 mph (64.37 km/h) | 52.53 mph (84.53 km/h) |
| 45 mph (72.42 km/h) | 59.09 mph (95.1 km/h) |
| 50 mph (80.47 km/h) | 65.66 mph (105.67 km/h) |
| 55 mph (88.51 km/h) | 72.22 mph (116.23 km/h) |
| 60 mph (96.56 km/h) | 78.79 mph (126.8 km/h) |
| 65 mph (104.61 km/h) | 85.36 mph (137.37 km/h) |
| 70 mph (112.65 km/h) | 91.92 mph (147.93 km/h) |
| 75 mph (120.7 km/h) | 98.49 mph (158.5 km/h) |
| 80 mph (128.75 km/h) | 105.05 mph (169.07 km/h) |
| 85 mph (136.79 km/h) | 111.62 mph (179.63 km/h) |
| 90 mph (144.84 km/h) | 118.19 mph (190.2 km/h) |
| 95 mph (152.89 km/h) | 124.75 mph (200.77 km/h) |
| 100 mph (160.93 km/h) | 131.32 mph (211.33 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1564 | 1817 | 1956 | 2043 | 2136 | 2203 | 2276 | 2362 | 2482 | 2602 | 2735 | 2842 | 3035 | 3247 | 3414 | 3520 | 3580 | 3800 | 4106 | 4771 |
Better Fuel Economy Factory Ratios Increased Power
