Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/50-20 | 275/45-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.65 (753) | 29.74 (755.5) | 0.1 (2.5) 0.3% |
| Width inches (mm) | 9.65 (245) | 10.83 (275) | 1.18 (30) 12.2% |
| Circum. inches (mm) | 93.13 (2365.62) | 93.44 (2373.47) | 0.31 (7.85) 0.3% |
| Sidewall Height inches (mm) | 4.82 (122.5) | 4.87 (123.75) | 0.05 (1.25) 1% |
| Revolutions per mile (km) | 680.31 (422.72) | 678.05 (421.32) | -2.25 (-1.4) -0.3% |
275/45-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.07 mph (32.29 km/h) |
| 25 mph (40.23 km/h) | 25.08 mph (40.37 km/h) |
| 30 mph (48.28 km/h) | 30.1 mph (48.44 km/h) |
| 35 mph (56.33 km/h) | 35.12 mph (56.51 km/h) |
| 40 mph (64.37 km/h) | 40.13 mph (64.59 km/h) |
| 45 mph (72.42 km/h) | 45.15 mph (72.66 km/h) |
| 50 mph (80.47 km/h) | 50.17 mph (80.73 km/h) |
| 55 mph (88.51 km/h) | 55.18 mph (88.81 km/h) |
| 60 mph (96.56 km/h) | 60.2 mph (96.88 km/h) |
| 65 mph (104.61 km/h) | 65.22 mph (104.95 km/h) |
| 70 mph (112.65 km/h) | 70.23 mph (113.03 km/h) |
| 75 mph (120.7 km/h) | 75.25 mph (121.1 km/h) |
| 80 mph (128.75 km/h) | 80.27 mph (129.18 km/h) |
| 85 mph (136.79 km/h) | 85.28 mph (137.25 km/h) |
| 90 mph (144.84 km/h) | 90.3 mph (145.32 km/h) |
| 95 mph (152.89 km/h) | 95.32 mph (153.4 km/h) |
| 100 mph (160.93 km/h) | 100.33 mph (161.47 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 |
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