Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 120/100-18 | 120/90-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.45 (697.2) | 27.5 (698.6) | 0.06 (1.4) 0.2% |
| Width inches (mm) | 4.72 (120) | 4.72 (120) | 0 (0) 0% |
| Circum. inches (mm) | 86.23 (2190.32) | 86.41 (2194.72) | 0.17 (4.4) 0.2% |
| Sidewall Height inches (mm) | 4.72 (120) | 4.25 (108) | -0.47 (-12) -10% |
| Revolutions per mile (km) | 734.75 (456.55) | 733.28 (455.64) | -1.47 (-0.91) -0.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.04 mph (32.25 km/h) |
| 25 mph (40.23 km/h) | 25.05 mph (40.31 km/h) |
| 30 mph (48.28 km/h) | 30.06 mph (48.38 km/h) |
| 35 mph (56.33 km/h) | 35.07 mph (56.44 km/h) |
| 40 mph (64.37 km/h) | 40.08 mph (64.5 km/h) |
| 45 mph (72.42 km/h) | 45.09 mph (72.57 km/h) |
| 50 mph (80.47 km/h) | 50.1 mph (80.63 km/h) |
| 55 mph (88.51 km/h) | 55.11 mph (88.69 km/h) |
| 60 mph (96.56 km/h) | 60.12 mph (96.75 km/h) |
| 65 mph (104.61 km/h) | 65.13 mph (104.82 km/h) |
| 70 mph (112.65 km/h) | 70.14 mph (112.88 km/h) |
| 75 mph (120.7 km/h) | 75.15 mph (120.94 km/h) |
| 80 mph (128.75 km/h) | 80.16 mph (129.01 km/h) |
| 85 mph (136.79 km/h) | 85.17 mph (137.07 km/h) |
| 90 mph (144.84 km/h) | 90.18 mph (145.13 km/h) |
| 95 mph (152.89 km/h) | 95.19 mph (153.19 km/h) |
| 100 mph (160.93 km/h) | 100.2 mph (161.26 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1866 | 2168 | 2335 | 2438 | 2549 | 2628 | 2716 | 2819 | 2962 | 3105 | 3264 | 3391 | 3621 | 3875 | 4074 | 4201 | 4272 | 4534 | 4899 | 5693 |
Better Fuel Economy Factory Ratios Increased Power
