Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 110/80-18 | 120/90-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.93 (633.2) | 25.5 (647.8) | 0.57 (14.6) 2.3% |
| Width inches (mm) | 4.33 (110) | 4.72 (120) | 0.39 (10) 9.1% |
| Circum. inches (mm) | 78.32 (1989.26) | 80.12 (2035.12) | 1.81 (45.87) 2.3% |
| Sidewall Height inches (mm) | 3.46 (88) | 4.25 (108) | 0.79 (20) 22.7% |
| Revolutions per mile (km) | 809.02 (502.7) | 790.78 (491.37) | -18.23 (-11.33) -2.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.46 mph (32.93 km/h) |
| 25 mph (40.23 km/h) | 25.58 mph (41.16 km/h) |
| 30 mph (48.28 km/h) | 30.69 mph (49.39 km/h) |
| 35 mph (56.33 km/h) | 35.81 mph (57.63 km/h) |
| 40 mph (64.37 km/h) | 40.92 mph (65.86 km/h) |
| 45 mph (72.42 km/h) | 46.04 mph (74.09 km/h) |
| 50 mph (80.47 km/h) | 51.15 mph (82.32 km/h) |
| 55 mph (88.51 km/h) | 56.27 mph (90.56 km/h) |
| 60 mph (96.56 km/h) | 61.38 mph (98.79 km/h) |
| 65 mph (104.61 km/h) | 66.5 mph (107.02 km/h) |
| 70 mph (112.65 km/h) | 71.61 mph (115.25 km/h) |
| 75 mph (120.7 km/h) | 76.73 mph (123.48 km/h) |
| 80 mph (128.75 km/h) | 81.84 mph (131.72 km/h) |
| 85 mph (136.79 km/h) | 86.96 mph (139.95 km/h) |
| 90 mph (144.84 km/h) | 92.08 mph (148.18 km/h) |
| 95 mph (152.89 km/h) | 97.19 mph (156.41 km/h) |
| 100 mph (160.93 km/h) | 102.31 mph (164.65 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2012 | 2338 | 2518 | 2629 | 2749 | 2834 | 2929 | 3040 | 3194 | 3348 | 3520 | 3657 | 3905 | 4179 | 4393 | 4530 | 4607 | 4890 | 5284 | 6140 |
Better Fuel Economy Factory Ratios Increased Power
