Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 120/90-18 | 110/100-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.5 (673.2) | 26.66 (677.2) | 0.16 (4) 0.6% |
| Width inches (mm) | 4.72 (120) | 4.33 (110) | -0.39 (-10) -8.3% |
| Circum. inches (mm) | 83.26 (2114.92) | 83.76 (2127.49) | 0.49 (12.57) 0.6% |
| Sidewall Height inches (mm) | 4.25 (108) | 4.33 (110) | 0.08 (2) 1.9% |
| Revolutions per mile (km) | 760.95 (472.83) | 756.45 (470.04) | -4.49 (-2.79) -0.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.12 mph (32.38 km/h) |
| 25 mph (40.23 km/h) | 25.15 mph (40.47 km/h) |
| 30 mph (48.28 km/h) | 30.18 mph (48.57 km/h) |
| 35 mph (56.33 km/h) | 35.21 mph (56.66 km/h) |
| 40 mph (64.37 km/h) | 40.24 mph (64.76 km/h) |
| 45 mph (72.42 km/h) | 45.27 mph (72.85 km/h) |
| 50 mph (80.47 km/h) | 50.3 mph (80.95 km/h) |
| 55 mph (88.51 km/h) | 55.33 mph (89.04 km/h) |
| 60 mph (96.56 km/h) | 60.36 mph (97.13 km/h) |
| 65 mph (104.61 km/h) | 65.39 mph (105.23 km/h) |
| 70 mph (112.65 km/h) | 70.42 mph (113.32 km/h) |
| 75 mph (120.7 km/h) | 75.45 mph (121.42 km/h) |
| 80 mph (128.75 km/h) | 80.48 mph (129.51 km/h) |
| 85 mph (136.79 km/h) | 85.51 mph (137.61 km/h) |
| 90 mph (144.84 km/h) | 90.53 mph (145.7 km/h) |
| 95 mph (152.89 km/h) | 95.56 mph (153.8 km/h) |
| 100 mph (160.93 km/h) | 100.59 mph (161.89 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1925 | 2236 | 2408 | 2515 | 2630 | 2711 | 2802 | 2908 | 3055 | 3203 | 3367 | 3498 | 3735 | 3998 | 4202 | 4333 | 4407 | 4677 | 5054 | 5873 |
Better Fuel Economy Factory Ratios Increased Power
