Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/75-17 | 245/75-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.33 (694.3) | 34.47 (875.5) | 7.13 (181.2) 26.1% |
| Width inches (mm) | 6.89 (175) | 9.65 (245) | 2.76 (70) 40% |
| Circum. inches (mm) | 85.87 (2181.21) | 108.29 (2750.46) | 22.41 (569.26) 26.1% |
| Sidewall Height inches (mm) | 5.17 (131.25) | 7.23 (183.75) | 2.07 (52.5) 40% |
| Revolutions per mile (km) | 737.82 (458.46) | 585.12 (363.57) | -152.71 (-94.89) -20.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.22 mph (40.59 km/h) |
| 25 mph (40.23 km/h) | 31.52 mph (50.73 km/h) |
| 30 mph (48.28 km/h) | 37.83 mph (60.88 km/h) |
| 35 mph (56.33 km/h) | 44.13 mph (71.03 km/h) |
| 40 mph (64.37 km/h) | 50.44 mph (81.17 km/h) |
| 45 mph (72.42 km/h) | 56.74 mph (91.32 km/h) |
| 50 mph (80.47 km/h) | 63.05 mph (101.47 km/h) |
| 55 mph (88.51 km/h) | 69.35 mph (111.61 km/h) |
| 60 mph (96.56 km/h) | 75.66 mph (121.76 km/h) |
| 65 mph (104.61 km/h) | 81.96 mph (131.91 km/h) |
| 70 mph (112.65 km/h) | 88.27 mph (142.06 km/h) |
| 75 mph (120.7 km/h) | 94.57 mph (152.2 km/h) |
| 80 mph (128.75 km/h) | 100.88 mph (162.35 km/h) |
| 85 mph (136.79 km/h) | 107.18 mph (172.5 km/h) |
| 90 mph (144.84 km/h) | 113.49 mph (182.64 km/h) |
| 95 mph (152.89 km/h) | 119.79 mph (192.79 km/h) |
| 100 mph (160.93 km/h) | 126.1 mph (202.94 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1489 | 1730 | 1863 | 1945 | 2034 | 2097 | 2167 | 2249 | 2363 | 2477 | 2604 | 2706 | 2889 | 3092 | 3250 | 3352 | 3409 | 3618 | 3909 | 4543 |
Better Fuel Economy Factory Ratios Increased Power
