Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 80/90-21 | 130/90-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.67 (677.4) | 25.21 (640.4) | -1.46 (-37) -5.5% |
| Width inches (mm) | 3.15 (80) | 5.12 (130) | 1.97 (50) 62.5% |
| Circum. inches (mm) | 83.78 (2128.11) | 79.21 (2011.88) | -4.58 (-116.24) -5.5% |
| Sidewall Height inches (mm) | 2.83 (72) | 4.61 (117) | 1.77 (45) 62.5% |
| Revolutions per mile (km) | 756.23 (469.9) | 799.92 (497.05) | 43.69 (27.15) 5.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.91 mph (30.43 km/h) |
| 25 mph (40.23 km/h) | 23.63 mph (38.04 km/h) |
| 30 mph (48.28 km/h) | 28.36 mph (45.64 km/h) |
| 35 mph (56.33 km/h) | 33.09 mph (53.25 km/h) |
| 40 mph (64.37 km/h) | 37.82 mph (60.86 km/h) |
| 45 mph (72.42 km/h) | 42.54 mph (68.46 km/h) |
| 50 mph (80.47 km/h) | 47.27 mph (76.07 km/h) |
| 55 mph (88.51 km/h) | 52 mph (83.68 km/h) |
| 60 mph (96.56 km/h) | 56.72 mph (91.29 km/h) |
| 65 mph (104.61 km/h) | 61.45 mph (98.89 km/h) |
| 70 mph (112.65 km/h) | 66.18 mph (106.5 km/h) |
| 75 mph (120.7 km/h) | 70.9 mph (114.11 km/h) |
| 80 mph (128.75 km/h) | 75.63 mph (121.72 km/h) |
| 85 mph (136.79 km/h) | 80.36 mph (129.32 km/h) |
| 90 mph (144.84 km/h) | 85.08 mph (136.93 km/h) |
| 95 mph (152.89 km/h) | 89.81 mph (144.54 km/h) |
| 100 mph (160.93 km/h) | 94.54 mph (152.14 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2036 | 2365 | 2547 | 2659 | 2781 | 2867 | 2963 | 3075 | 3231 | 3387 | 3560 | 3699 | 3950 | 4227 | 4444 | 4582 | 4660 | 4946 | 5345 | 6211 |
Better Fuel Economy Factory Ratios Increased Power
