Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 160/80-15 | 120/90-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.08 (637) | 25.5 (647.8) | 0.43 (10.8) 1.7% |
| Width inches (mm) | 6.3 (160) | 4.72 (120) | -1.57 (-40) -25% |
| Circum. inches (mm) | 78.79 (2001.19) | 80.12 (2035.12) | 1.34 (33.93) 1.7% |
| Sidewall Height inches (mm) | 5.04 (128) | 4.25 (108) | -0.79 (-20) -15.6% |
| Revolutions per mile (km) | 804.19 (499.7) | 790.78 (491.37) | -13.41 (-8.33) -1.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.34 mph (32.73 km/h) |
| 25 mph (40.23 km/h) | 25.42 mph (40.92 km/h) |
| 30 mph (48.28 km/h) | 30.51 mph (49.1 km/h) |
| 35 mph (56.33 km/h) | 35.59 mph (57.28 km/h) |
| 40 mph (64.37 km/h) | 40.68 mph (65.47 km/h) |
| 45 mph (72.42 km/h) | 45.76 mph (73.65 km/h) |
| 50 mph (80.47 km/h) | 50.85 mph (81.83 km/h) |
| 55 mph (88.51 km/h) | 55.93 mph (90.01 km/h) |
| 60 mph (96.56 km/h) | 61.02 mph (98.2 km/h) |
| 65 mph (104.61 km/h) | 66.1 mph (106.38 km/h) |
| 70 mph (112.65 km/h) | 71.19 mph (114.56 km/h) |
| 75 mph (120.7 km/h) | 76.27 mph (122.75 km/h) |
| 80 mph (128.75 km/h) | 81.36 mph (130.93 km/h) |
| 85 mph (136.79 km/h) | 86.44 mph (139.11 km/h) |
| 90 mph (144.84 km/h) | 91.53 mph (147.3 km/h) |
| 95 mph (152.89 km/h) | 96.61 mph (155.48 km/h) |
| 100 mph (160.93 km/h) | 101.7 mph (163.66 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
