Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 280/85-16 | 34/10.5-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.74 (882.4) | 34.08 (865.64) | -0.66 (-16.76) -1.9% |
| Width inches (mm) | 11.02 (280) | 10.51 (267) | -0.51 (-13) -4.6% |
| Circum. inches (mm) | 109.14 (2772.14) | 107.07 (2719.49) | -2.07 (-52.65) -1.9% |
| Sidewall Height inches (mm) | 9.37 (238) | 9.04 (229.62) | -0.33 (-8.38) -3.5% |
| Revolutions per mile (km) | 580.54 (360.73) | 591.78 (367.72) | 11.24 (6.98) 1.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.62 mph (31.58 km/h) |
| 25 mph (40.23 km/h) | 24.53 mph (39.47 km/h) |
| 30 mph (48.28 km/h) | 29.43 mph (47.36 km/h) |
| 35 mph (56.33 km/h) | 34.34 mph (55.26 km/h) |
| 40 mph (64.37 km/h) | 39.24 mph (63.15 km/h) |
| 45 mph (72.42 km/h) | 44.15 mph (71.05 km/h) |
| 50 mph (80.47 km/h) | 49.05 mph (78.94 km/h) |
| 55 mph (88.51 km/h) | 53.96 mph (86.83 km/h) |
| 60 mph (96.56 km/h) | 58.86 mph (94.73 km/h) |
| 65 mph (104.61 km/h) | 63.77 mph (102.62 km/h) |
| 70 mph (112.65 km/h) | 68.67 mph (110.51 km/h) |
| 75 mph (120.7 km/h) | 73.58 mph (118.41 km/h) |
| 80 mph (128.75 km/h) | 78.48 mph (126.3 km/h) |
| 85 mph (136.79 km/h) | 83.39 mph (134.2 km/h) |
| 90 mph (144.84 km/h) | 88.29 mph (142.09 km/h) |
| 95 mph (152.89 km/h) | 93.2 mph (149.98 km/h) |
| 100 mph (160.93 km/h) | 98.1 mph (157.88 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1506 | 1749 | 1884 | 1967 | 2057 | 2121 | 2192 | 2275 | 2390 | 2506 | 2634 | 2736 | 2922 | 3127 | 3288 | 3390 | 3448 | 3659 | 3954 | 4595 |
Better Fuel Economy Factory Ratios Increased Power
