Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/60-20 | 275/45-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.8 (706) | 29.74 (755.5) | 1.95 (49.5) 7% |
| Width inches (mm) | 6.5 (165) | 10.83 (275) | 4.33 (110) 66.7% |
| Circum. inches (mm) | 87.32 (2217.96) | 93.44 (2373.47) | 6.12 (155.51) 7% |
| Sidewall Height inches (mm) | 3.9 (99) | 4.87 (123.75) | 0.97 (24.75) 25% |
| Revolutions per mile (km) | 725.6 (450.86) | 678.05 (421.32) | -47.54 (-29.54) -6.6% |
275/45-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.4 mph (34.44 km/h) |
| 25 mph (40.23 km/h) | 26.75 mph (43.05 km/h) |
| 30 mph (48.28 km/h) | 32.1 mph (51.67 km/h) |
| 35 mph (56.33 km/h) | 37.45 mph (60.28 km/h) |
| 40 mph (64.37 km/h) | 42.8 mph (68.89 km/h) |
| 45 mph (72.42 km/h) | 48.16 mph (77.5 km/h) |
| 50 mph (80.47 km/h) | 53.51 mph (86.11 km/h) |
| 55 mph (88.51 km/h) | 58.86 mph (94.72 km/h) |
| 60 mph (96.56 km/h) | 64.21 mph (103.33 km/h) |
| 65 mph (104.61 km/h) | 69.56 mph (111.94 km/h) |
| 70 mph (112.65 km/h) | 74.91 mph (120.55 km/h) |
| 75 mph (120.7 km/h) | 80.26 mph (129.16 km/h) |
| 80 mph (128.75 km/h) | 85.61 mph (137.77 km/h) |
| 85 mph (136.79 km/h) | 90.96 mph (146.39 km/h) |
| 90 mph (144.84 km/h) | 96.31 mph (155 km/h) |
| 95 mph (152.89 km/h) | 101.66 mph (163.61 km/h) |
| 100 mph (160.93 km/h) | 107.01 mph (172.22 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1726 | 2005 | 2159 | 2254 | 2357 | 2430 | 2511 | 2607 | 2739 | 2871 | 3018 | 3135 | 3348 | 3583 | 3767 | 3884 | 3950 | 4193 | 4530 | 5265 |
Better Fuel Economy Factory Ratios Increased Power
