Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/90-17 | 305/90-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.69 (728.8) | 38.61 (980.8) | 9.92 (252) 34.6% |
| Width inches (mm) | 6.5 (165) | 12.01 (305) | 5.51 (140) 84.8% |
| Circum. inches (mm) | 90.14 (2289.59) | 121.31 (3081.27) | 31.17 (791.68) 34.6% |
| Sidewall Height inches (mm) | 5.85 (148.5) | 10.81 (274.5) | 4.96 (126) 84.8% |
| Revolutions per mile (km) | 702.9 (436.76) | 522.3 (324.54) | -180.6 (-112.22) -25.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 26.92 mph (43.32 km/h) |
| 25 mph (40.23 km/h) | 33.64 mph (54.15 km/h) |
| 30 mph (48.28 km/h) | 40.37 mph (64.97 km/h) |
| 35 mph (56.33 km/h) | 47.1 mph (75.8 km/h) |
| 40 mph (64.37 km/h) | 53.83 mph (86.63 km/h) |
| 45 mph (72.42 km/h) | 60.56 mph (97.46 km/h) |
| 50 mph (80.47 km/h) | 67.29 mph (108.29 km/h) |
| 55 mph (88.51 km/h) | 74.02 mph (119.12 km/h) |
| 60 mph (96.56 km/h) | 80.75 mph (129.95 km/h) |
| 65 mph (104.61 km/h) | 87.48 mph (140.78 km/h) |
| 70 mph (112.65 km/h) | 94.2 mph (151.61 km/h) |
| 75 mph (120.7 km/h) | 100.93 mph (162.44 km/h) |
| 80 mph (128.75 km/h) | 107.66 mph (173.27 km/h) |
| 85 mph (136.79 km/h) | 114.39 mph (184.09 km/h) |
| 90 mph (144.84 km/h) | 121.12 mph (194.92 km/h) |
| 95 mph (152.89 km/h) | 127.85 mph (205.75 km/h) |
| 100 mph (160.93 km/h) | 134.58 mph (216.58 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1329 | 1544 | 1663 | 1736 | 1816 | 1872 | 1934 | 2008 | 2110 | 2211 | 2325 | 2415 | 2579 | 2760 | 2902 | 2992 | 3043 | 3230 | 3490 | 4055 |
Better Fuel Economy Factory Ratios Increased Power
