Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 90/80-16 | 120/80-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.67 (550.4) | 23.56 (598.4) | 1.89 (48) 8.7% |
| Width inches (mm) | 3.54 (90) | 4.72 (120) | 1.18 (30) 33.3% |
| Circum. inches (mm) | 68.08 (1729.13) | 74.01 (1879.93) | 5.94 (150.8) 8.7% |
| Sidewall Height inches (mm) | 2.83 (72) | 3.78 (96) | 0.94 (24) 33.3% |
| Revolutions per mile (km) | 930.72 (578.32) | 856.07 (531.93) | -74.66 (-46.39) -8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.74 mph (34.99 km/h) |
| 25 mph (40.23 km/h) | 27.18 mph (43.74 km/h) |
| 30 mph (48.28 km/h) | 32.62 mph (52.49 km/h) |
| 35 mph (56.33 km/h) | 38.05 mph (61.24 km/h) |
| 40 mph (64.37 km/h) | 43.49 mph (69.99 km/h) |
| 45 mph (72.42 km/h) | 48.92 mph (78.74 km/h) |
| 50 mph (80.47 km/h) | 54.36 mph (87.48 km/h) |
| 55 mph (88.51 km/h) | 59.8 mph (96.23 km/h) |
| 60 mph (96.56 km/h) | 65.23 mph (104.98 km/h) |
| 65 mph (104.61 km/h) | 70.67 mph (113.73 km/h) |
| 70 mph (112.65 km/h) | 76.1 mph (122.48 km/h) |
| 75 mph (120.7 km/h) | 81.54 mph (131.23 km/h) |
| 80 mph (128.75 km/h) | 86.98 mph (139.98 km/h) |
| 85 mph (136.79 km/h) | 92.41 mph (148.72 km/h) |
| 90 mph (144.84 km/h) | 97.85 mph (157.47 km/h) |
| 95 mph (152.89 km/h) | 103.28 mph (166.22 km/h) |
| 100 mph (160.93 km/h) | 108.72 mph (174.97 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2179 | 2531 | 2725 | 2846 | 2976 | 3068 | 3170 | 3291 | 3458 | 3625 | 3810 | 3958 | 4227 | 4524 | 4756 | 4904 | 4987 | 5293 | 5720 | 6647 |
Better Fuel Economy Factory Ratios Increased Power
