Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 80/90-21 | 110/90-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.67 (677.4) | 26.8 (680.6) | 0.13 (3.2) 0.5% |
| Width inches (mm) | 3.15 (80) | 4.33 (110) | 1.18 (30) 37.5% |
| Circum. inches (mm) | 83.78 (2128.11) | 84.18 (2138.17) | 0.4 (10.05) 0.5% |
| Sidewall Height inches (mm) | 2.83 (72) | 3.9 (99) | 1.06 (27) 37.5% |
| Revolutions per mile (km) | 756.23 (469.9) | 752.67 (467.69) | -3.56 (-2.21) -0.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.09 mph (32.34 km/h) |
| 25 mph (40.23 km/h) | 25.12 mph (40.42 km/h) |
| 30 mph (48.28 km/h) | 30.14 mph (48.51 km/h) |
| 35 mph (56.33 km/h) | 35.17 mph (56.59 km/h) |
| 40 mph (64.37 km/h) | 40.19 mph (64.68 km/h) |
| 45 mph (72.42 km/h) | 45.21 mph (72.76 km/h) |
| 50 mph (80.47 km/h) | 50.24 mph (80.85 km/h) |
| 55 mph (88.51 km/h) | 55.26 mph (88.93 km/h) |
| 60 mph (96.56 km/h) | 60.28 mph (97.02 km/h) |
| 65 mph (104.61 km/h) | 65.31 mph (105.1 km/h) |
| 70 mph (112.65 km/h) | 70.33 mph (113.19 km/h) |
| 75 mph (120.7 km/h) | 75.35 mph (121.27 km/h) |
| 80 mph (128.75 km/h) | 80.38 mph (129.36 km/h) |
| 85 mph (136.79 km/h) | 85.4 mph (137.44 km/h) |
| 90 mph (144.84 km/h) | 90.43 mph (145.53 km/h) |
| 95 mph (152.89 km/h) | 95.45 mph (153.61 km/h) |
| 100 mph (160.93 km/h) | 100.47 mph (161.69 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1915 | 2225 | 2396 | 2502 | 2616 | 2698 | 2788 | 2893 | 3040 | 3187 | 3350 | 3480 | 3717 | 3978 | 4181 | 4312 | 4385 | 4654 | 5029 | 5844 |
Better Fuel Economy Factory Ratios Increased Power
