Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 280/85-16 | 225/80-17.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.74 (882.4) | 31.67 (804.5) | -3.07 (-77.9) -8.8% |
| Width inches (mm) | 11.02 (280) | 8.86 (225) | -2.17 (-55) -19.6% |
| Circum. inches (mm) | 109.14 (2772.14) | 99.5 (2527.41) | -9.64 (-244.73) -8.8% |
| Sidewall Height inches (mm) | 9.37 (238) | 7.09 (180) | -2.28 (-58) -24.4% |
| Revolutions per mile (km) | 580.54 (360.73) | 636.76 (395.66) | 56.21 (34.93) 9.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.23 mph (29.35 km/h) |
| 25 mph (40.23 km/h) | 22.79 mph (36.68 km/h) |
| 30 mph (48.28 km/h) | 27.35 mph (44.02 km/h) |
| 35 mph (56.33 km/h) | 31.91 mph (51.35 km/h) |
| 40 mph (64.37 km/h) | 36.47 mph (58.69 km/h) |
| 45 mph (72.42 km/h) | 41.03 mph (66.03 km/h) |
| 50 mph (80.47 km/h) | 45.59 mph (73.36 km/h) |
| 55 mph (88.51 km/h) | 50.14 mph (80.7 km/h) |
| 60 mph (96.56 km/h) | 54.7 mph (88.04 km/h) |
| 65 mph (104.61 km/h) | 59.26 mph (95.37 km/h) |
| 70 mph (112.65 km/h) | 63.82 mph (102.71 km/h) |
| 75 mph (120.7 km/h) | 68.38 mph (110.05 km/h) |
| 80 mph (128.75 km/h) | 72.94 mph (117.38 km/h) |
| 85 mph (136.79 km/h) | 77.5 mph (124.72 km/h) |
| 90 mph (144.84 km/h) | 82.05 mph (132.05 km/h) |
| 95 mph (152.89 km/h) | 86.61 mph (139.39 km/h) |
| 100 mph (160.93 km/h) | 91.17 mph (146.73 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1620 | 1882 | 2027 | 2117 | 2213 | 2282 | 2358 | 2448 | 2572 | 2696 | 2834 | 2944 | 3144 | 3365 | 3537 | 3648 | 3710 | 3937 | 4254 | 4944 |
Better Fuel Economy Factory Ratios Increased Power
