Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 280/80-16 | 305/85-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.64 (854.4) | 37.41 (950.3) | 3.78 (95.9) 11.2% |
| Width inches (mm) | 11.02 (280) | 12.01 (305) | 0.98 (25) 8.9% |
| Circum. inches (mm) | 105.68 (2684.18) | 117.54 (2985.46) | 11.86 (301.28) 11.2% |
| Sidewall Height inches (mm) | 8.82 (224) | 10.21 (259.25) | 1.39 (35.25) 15.7% |
| Revolutions per mile (km) | 599.57 (372.55) | 539.06 (334.96) | -60.51 (-37.6) -10.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.24 mph (35.8 km/h) |
| 25 mph (40.23 km/h) | 27.81 mph (44.75 km/h) |
| 30 mph (48.28 km/h) | 33.37 mph (53.7 km/h) |
| 35 mph (56.33 km/h) | 38.93 mph (62.65 km/h) |
| 40 mph (64.37 km/h) | 44.49 mph (71.6 km/h) |
| 45 mph (72.42 km/h) | 50.05 mph (80.55 km/h) |
| 50 mph (80.47 km/h) | 55.61 mph (89.5 km/h) |
| 55 mph (88.51 km/h) | 61.17 mph (98.45 km/h) |
| 60 mph (96.56 km/h) | 66.73 mph (107.4 km/h) |
| 65 mph (104.61 km/h) | 72.3 mph (116.35 km/h) |
| 70 mph (112.65 km/h) | 77.86 mph (125.3 km/h) |
| 75 mph (120.7 km/h) | 83.42 mph (134.25 km/h) |
| 80 mph (128.75 km/h) | 88.98 mph (143.2 km/h) |
| 85 mph (136.79 km/h) | 94.54 mph (152.15 km/h) |
| 90 mph (144.84 km/h) | 100.1 mph (161.1 km/h) |
| 95 mph (152.89 km/h) | 105.66 mph (170.05 km/h) |
| 100 mph (160.93 km/h) | 111.22 mph (179 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1372 | 1594 | 1716 | 1792 | 1874 | 1932 | 1996 | 2072 | 2177 | 2282 | 2399 | 2493 | 2662 | 2849 | 2995 | 3088 | 3141 | 3333 | 3602 | 4185 |
Better Fuel Economy Factory Ratios Increased Power
