Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/75-17 | 275/45-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.74 (679.3) | 29.74 (755.5) | 3 (76.2) 11.2% |
| Width inches (mm) | 6.5 (165) | 10.83 (275) | 4.33 (110) 66.7% |
| Circum. inches (mm) | 84.02 (2134.08) | 93.44 (2373.47) | 9.42 (239.39) 11.2% |
| Sidewall Height inches (mm) | 4.87 (123.75) | 4.87 (123.75) | 0 (0) 0% |
| Revolutions per mile (km) | 754.11 (468.58) | 678.05 (421.32) | -76.06 (-47.26) -10.1% |
275/45-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.24 mph (35.8 km/h) |
| 25 mph (40.23 km/h) | 27.8 mph (44.75 km/h) |
| 30 mph (48.28 km/h) | 33.37 mph (53.7 km/h) |
| 35 mph (56.33 km/h) | 38.93 mph (62.65 km/h) |
| 40 mph (64.37 km/h) | 44.49 mph (71.59 km/h) |
| 45 mph (72.42 km/h) | 50.05 mph (80.54 km/h) |
| 50 mph (80.47 km/h) | 55.61 mph (89.49 km/h) |
| 55 mph (88.51 km/h) | 61.17 mph (98.44 km/h) |
| 60 mph (96.56 km/h) | 66.73 mph (107.39 km/h) |
| 65 mph (104.61 km/h) | 72.29 mph (116.34 km/h) |
| 70 mph (112.65 km/h) | 77.85 mph (125.29 km/h) |
| 75 mph (120.7 km/h) | 83.41 mph (134.24 km/h) |
| 80 mph (128.75 km/h) | 88.97 mph (143.19 km/h) |
| 85 mph (136.79 km/h) | 94.53 mph (152.14 km/h) |
| 90 mph (144.84 km/h) | 100.1 mph (161.09 km/h) |
| 95 mph (152.89 km/h) | 105.66 mph (170.04 km/h) |
| 100 mph (160.93 km/h) | 111.22 mph (178.99 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
