Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/70-20 | 285/70-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 35.16 (893) | 35.71 (907) | 0.55 (14) 1.6% |
| Width inches (mm) | 10.83 (275) | 11.22 (285) | 0.39 (10) 3.6% |
| Circum. inches (mm) | 110.45 (2805.44) | 112.18 (2849.42) | 1.73 (43.98) 1.6% |
| Sidewall Height inches (mm) | 7.58 (192.5) | 7.85 (199.5) | 0.28 (7) 3.6% |
| Revolutions per mile (km) | 573.65 (356.45) | 564.8 (350.95) | -8.85 (-5.5) -1.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.31 mph (32.69 km/h) |
| 25 mph (40.23 km/h) | 25.39 mph (40.86 km/h) |
| 30 mph (48.28 km/h) | 30.47 mph (49.04 km/h) |
| 35 mph (56.33 km/h) | 35.55 mph (57.21 km/h) |
| 40 mph (64.37 km/h) | 40.63 mph (65.38 km/h) |
| 45 mph (72.42 km/h) | 45.71 mph (73.56 km/h) |
| 50 mph (80.47 km/h) | 50.78 mph (81.73 km/h) |
| 55 mph (88.51 km/h) | 55.86 mph (89.9 km/h) |
| 60 mph (96.56 km/h) | 60.94 mph (98.07 km/h) |
| 65 mph (104.61 km/h) | 66.02 mph (106.25 km/h) |
| 70 mph (112.65 km/h) | 71.1 mph (114.42 km/h) |
| 75 mph (120.7 km/h) | 76.18 mph (122.59 km/h) |
| 80 mph (128.75 km/h) | 81.25 mph (130.77 km/h) |
| 85 mph (136.79 km/h) | 86.33 mph (138.94 km/h) |
| 90 mph (144.84 km/h) | 91.41 mph (147.11 km/h) |
| 95 mph (152.89 km/h) | 96.49 mph (155.28 km/h) |
| 100 mph (160.93 km/h) | 101.57 mph (163.46 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1437 | 1670 | 1798 | 1878 | 1963 | 2024 | 2092 | 2171 | 2281 | 2391 | 2514 | 2612 | 2789 | 2985 | 3138 | 3235 | 3290 | 3492 | 3774 | 4385 |
Better Fuel Economy Factory Ratios Increased Power
