Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 280/85-16 | 315/85-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.74 (882.4) | 37.08 (941.9) | 2.34 (59.5) 6.7% |
| Width inches (mm) | 11.02 (280) | 12.4 (315) | 1.38 (35) 12.5% |
| Circum. inches (mm) | 109.14 (2772.14) | 116.5 (2959.07) | 7.36 (186.92) 6.7% |
| Sidewall Height inches (mm) | 9.37 (238) | 10.54 (267.75) | 1.17 (29.75) 12.5% |
| Revolutions per mile (km) | 580.54 (360.73) | 543.87 (337.94) | -36.67 (-22.79) -6.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.35 mph (34.36 km/h) |
| 25 mph (40.23 km/h) | 26.69 mph (42.95 km/h) |
| 30 mph (48.28 km/h) | 32.02 mph (51.54 km/h) |
| 35 mph (56.33 km/h) | 37.36 mph (60.13 km/h) |
| 40 mph (64.37 km/h) | 42.7 mph (68.71 km/h) |
| 45 mph (72.42 km/h) | 48.03 mph (77.3 km/h) |
| 50 mph (80.47 km/h) | 53.37 mph (85.89 km/h) |
| 55 mph (88.51 km/h) | 58.71 mph (94.48 km/h) |
| 60 mph (96.56 km/h) | 64.05 mph (103.07 km/h) |
| 65 mph (104.61 km/h) | 69.38 mph (111.66 km/h) |
| 70 mph (112.65 km/h) | 74.72 mph (120.25 km/h) |
| 75 mph (120.7 km/h) | 80.06 mph (128.84 km/h) |
| 80 mph (128.75 km/h) | 85.39 mph (137.43 km/h) |
| 85 mph (136.79 km/h) | 90.73 mph (146.02 km/h) |
| 90 mph (144.84 km/h) | 96.07 mph (154.61 km/h) |
| 95 mph (152.89 km/h) | 101.41 mph (163.2 km/h) |
| 100 mph (160.93 km/h) | 106.74 mph (171.79 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1384 | 1608 | 1732 | 1808 | 1891 | 1949 | 2014 | 2091 | 2197 | 2303 | 2421 | 2515 | 2686 | 2874 | 3021 | 3116 | 3169 | 3363 | 3634 | 4223 |
Better Fuel Economy Factory Ratios Increased Power
