Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/55-19 | 285/45-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.91 (785.1) | 30.1 (764.5) | -0.81 (-20.6) -2.6% |
| Width inches (mm) | 10.83 (275) | 11.22 (285) | 0.39 (10) 3.6% |
| Circum. inches (mm) | 97.1 (2466.46) | 94.56 (2401.75) | -2.55 (-64.72) -2.6% |
| Sidewall Height inches (mm) | 5.95 (151.25) | 5.05 (128.25) | -0.91 (-23) -15.2% |
| Revolutions per mile (km) | 652.49 (405.44) | 670.07 (416.36) | 17.58 (10.92) 2.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.48 mph (31.34 km/h) |
| 25 mph (40.23 km/h) | 24.34 mph (39.18 km/h) |
| 30 mph (48.28 km/h) | 29.21 mph (47.01 km/h) |
| 35 mph (56.33 km/h) | 34.08 mph (54.85 km/h) |
| 40 mph (64.37 km/h) | 38.95 mph (62.68 km/h) |
| 45 mph (72.42 km/h) | 43.82 mph (70.52 km/h) |
| 50 mph (80.47 km/h) | 48.69 mph (78.36 km/h) |
| 55 mph (88.51 km/h) | 53.56 mph (86.19 km/h) |
| 60 mph (96.56 km/h) | 58.43 mph (94.03 km/h) |
| 65 mph (104.61 km/h) | 63.29 mph (101.86 km/h) |
| 70 mph (112.65 km/h) | 68.16 mph (109.7 km/h) |
| 75 mph (120.7 km/h) | 73.03 mph (117.53 km/h) |
| 80 mph (128.75 km/h) | 77.9 mph (125.37 km/h) |
| 85 mph (136.79 km/h) | 82.77 mph (133.21 km/h) |
| 90 mph (144.84 km/h) | 87.64 mph (141.04 km/h) |
| 95 mph (152.89 km/h) | 92.51 mph (148.88 km/h) |
| 100 mph (160.93 km/h) | 97.38 mph (156.71 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1705 | 1981 | 2133 | 2228 | 2329 | 2402 | 2482 | 2576 | 2707 | 2837 | 2982 | 3098 | 3309 | 3541 | 3722 | 3839 | 3904 | 4143 | 4477 | 5203 |
Better Fuel Economy Factory Ratios Increased Power
