Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 280/80-16 | 315/70-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.64 (854.4) | 37.36 (949) | 3.72 (94.6) 11.1% |
| Width inches (mm) | 11.02 (280) | 12.4 (315) | 1.38 (35) 12.5% |
| Circum. inches (mm) | 105.68 (2684.18) | 117.38 (2981.37) | 11.7 (297.19) 11.1% |
| Sidewall Height inches (mm) | 8.82 (224) | 8.68 (220.5) | -0.14 (-3.5) -1.6% |
| Revolutions per mile (km) | 599.57 (372.55) | 539.8 (335.42) | -59.77 (-37.14) -10% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.21 mph (35.75 km/h) |
| 25 mph (40.23 km/h) | 27.77 mph (44.69 km/h) |
| 30 mph (48.28 km/h) | 33.32 mph (53.63 km/h) |
| 35 mph (56.33 km/h) | 38.88 mph (62.56 km/h) |
| 40 mph (64.37 km/h) | 44.43 mph (71.5 km/h) |
| 45 mph (72.42 km/h) | 49.98 mph (80.44 km/h) |
| 50 mph (80.47 km/h) | 55.54 mph (89.38 km/h) |
| 55 mph (88.51 km/h) | 61.09 mph (98.31 km/h) |
| 60 mph (96.56 km/h) | 66.64 mph (107.25 km/h) |
| 65 mph (104.61 km/h) | 72.2 mph (116.19 km/h) |
| 70 mph (112.65 km/h) | 77.75 mph (125.13 km/h) |
| 75 mph (120.7 km/h) | 83.3 mph (134.07 km/h) |
| 80 mph (128.75 km/h) | 88.86 mph (143 km/h) |
| 85 mph (136.79 km/h) | 94.41 mph (151.94 km/h) |
| 90 mph (144.84 km/h) | 99.96 mph (160.88 km/h) |
| 95 mph (152.89 km/h) | 105.52 mph (169.82 km/h) |
| 100 mph (160.93 km/h) | 111.07 mph (178.75 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1374 | 1596 | 1719 | 1795 | 1876 | 1935 | 1999 | 2075 | 2180 | 2286 | 2402 | 2496 | 2666 | 2853 | 2999 | 3092 | 3145 | 3338 | 3607 | 4191 |
Better Fuel Economy Factory Ratios Increased Power
