Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 280/85-16 | 255/85-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.74 (882.4) | 34.07 (865.3) | -0.67 (-17.1) -1.9% |
| Width inches (mm) | 11.02 (280) | 10.04 (255) | -0.98 (-25) -8.9% |
| Circum. inches (mm) | 109.14 (2772.14) | 107.02 (2718.42) | -2.12 (-53.72) -1.9% |
| Sidewall Height inches (mm) | 9.37 (238) | 8.53 (216.75) | -0.84 (-21.25) -8.9% |
| Revolutions per mile (km) | 580.54 (360.73) | 592.01 (367.86) | 11.47 (7.13) 2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.61 mph (31.56 km/h) |
| 25 mph (40.23 km/h) | 24.52 mph (39.45 km/h) |
| 30 mph (48.28 km/h) | 29.42 mph (47.34 km/h) |
| 35 mph (56.33 km/h) | 34.32 mph (55.24 km/h) |
| 40 mph (64.37 km/h) | 39.22 mph (63.13 km/h) |
| 45 mph (72.42 km/h) | 44.13 mph (71.02 km/h) |
| 50 mph (80.47 km/h) | 49.03 mph (78.91 km/h) |
| 55 mph (88.51 km/h) | 53.93 mph (86.8 km/h) |
| 60 mph (96.56 km/h) | 58.84 mph (94.69 km/h) |
| 65 mph (104.61 km/h) | 63.74 mph (102.58 km/h) |
| 70 mph (112.65 km/h) | 68.64 mph (110.47 km/h) |
| 75 mph (120.7 km/h) | 73.55 mph (118.36 km/h) |
| 80 mph (128.75 km/h) | 78.45 mph (126.25 km/h) |
| 85 mph (136.79 km/h) | 83.35 mph (134.14 km/h) |
| 90 mph (144.84 km/h) | 88.26 mph (142.03 km/h) |
| 95 mph (152.89 km/h) | 93.16 mph (149.93 km/h) |
| 100 mph (160.93 km/h) | 98.06 mph (157.82 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1507 | 1750 | 1885 | 1968 | 2058 | 2122 | 2193 | 2276 | 2391 | 2507 | 2635 | 2737 | 2923 | 3129 | 3289 | 3391 | 3449 | 3661 | 3956 | 4597 |
Better Fuel Economy Factory Ratios Increased Power
