Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/25-20 | 285/40-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.81 (655.5) | 28.98 (736) | 3.17 (80.5) 12.3% |
| Width inches (mm) | 11.61 (295) | 11.22 (285) | -0.39 (-10) -3.4% |
| Circum. inches (mm) | 81.08 (2059.31) | 91.03 (2312.21) | 9.96 (252.9) 12.3% |
| Sidewall Height inches (mm) | 2.9 (73.75) | 4.49 (114) | 1.58 (40.25) 54.6% |
| Revolutions per mile (km) | 781.5 (485.6) | 696.02 (432.49) | -85.48 (-53.11) -10.9% |
285/40-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.46 mph (36.14 km/h) |
| 25 mph (40.23 km/h) | 28.07 mph (45.17 km/h) |
| 30 mph (48.28 km/h) | 33.68 mph (54.21 km/h) |
| 35 mph (56.33 km/h) | 39.3 mph (63.24 km/h) |
| 40 mph (64.37 km/h) | 44.91 mph (72.28 km/h) |
| 45 mph (72.42 km/h) | 50.53 mph (81.31 km/h) |
| 50 mph (80.47 km/h) | 56.14 mph (90.35 km/h) |
| 55 mph (88.51 km/h) | 61.75 mph (99.38 km/h) |
| 60 mph (96.56 km/h) | 67.37 mph (108.42 km/h) |
| 65 mph (104.61 km/h) | 72.98 mph (117.45 km/h) |
| 70 mph (112.65 km/h) | 78.6 mph (126.49 km/h) |
| 75 mph (120.7 km/h) | 84.21 mph (135.52 km/h) |
| 80 mph (128.75 km/h) | 89.82 mph (144.56 km/h) |
| 85 mph (136.79 km/h) | 95.44 mph (153.59 km/h) |
| 90 mph (144.84 km/h) | 101.05 mph (162.63 km/h) |
| 95 mph (152.89 km/h) | 106.67 mph (171.66 km/h) |
| 100 mph (160.93 km/h) | 112.28 mph (180.7 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1771 | 2058 | 2216 | 2314 | 2419 | 2495 | 2578 | 2676 | 2811 | 2947 | 3098 | 3218 | 3437 | 3678 | 3867 | 3987 | 4055 | 4304 | 4650 | 5404 |
Better Fuel Economy Factory Ratios Increased Power
