Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/80-17 | 145/50-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.13 (663.8) | 22.71 (576.8) | -3.43 (-87) -13.1% |
| Width inches (mm) | 5.71 (145) | 5.71 (145) | 0 (0) 0% |
| Circum. inches (mm) | 82.1 (2085.39) | 71.34 (1812.07) | -10.76 (-273.32) -13.1% |
| Sidewall Height inches (mm) | 4.57 (116) | 2.85 (72.5) | -1.71 (-43.5) -37.5% |
| Revolutions per mile (km) | 771.72 (479.53) | 888.12 (551.85) | 116.4 (72.33) 15.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.38 mph (27.97 km/h) |
| 25 mph (40.23 km/h) | 21.72 mph (34.96 km/h) |
| 30 mph (48.28 km/h) | 26.07 mph (41.95 km/h) |
| 35 mph (56.33 km/h) | 30.41 mph (48.94 km/h) |
| 40 mph (64.37 km/h) | 34.76 mph (55.94 km/h) |
| 45 mph (72.42 km/h) | 39.1 mph (62.93 km/h) |
| 50 mph (80.47 km/h) | 43.45 mph (69.92 km/h) |
| 55 mph (88.51 km/h) | 47.79 mph (76.91 km/h) |
| 60 mph (96.56 km/h) | 52.14 mph (83.91 km/h) |
| 65 mph (104.61 km/h) | 56.48 mph (90.9 km/h) |
| 70 mph (112.65 km/h) | 60.83 mph (97.89 km/h) |
| 75 mph (120.7 km/h) | 65.17 mph (104.88 km/h) |
| 80 mph (128.75 km/h) | 69.51 mph (111.87 km/h) |
| 85 mph (136.79 km/h) | 73.86 mph (118.87 km/h) |
| 90 mph (144.84 km/h) | 78.2 mph (125.86 km/h) |
| 95 mph (152.89 km/h) | 82.55 mph (132.85 km/h) |
| 100 mph (160.93 km/h) | 86.89 mph (139.84 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2260 | 2626 | 2828 | 2953 | 3087 | 3183 | 3289 | 3414 | 3587 | 3760 | 3953 | 4107 | 4386 | 4693 | 4934 | 5088 | 5174 | 5492 | 5934 | 6896 |
Better Fuel Economy Factory Ratios Increased Power
