Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/45-16 | 275/65-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.16 (689.9) | 34.07 (865.5) | 6.91 (175.6) 25.5% |
| Width inches (mm) | 12.4 (315) | 10.83 (275) | -1.57 (-40) -12.7% |
| Circum. inches (mm) | 85.33 (2167.38) | 107.05 (2719.05) | 21.72 (551.66) 25.5% |
| Sidewall Height inches (mm) | 5.58 (141.75) | 7.04 (178.75) | 1.46 (37) 26.1% |
| Revolutions per mile (km) | 742.53 (461.38) | 591.88 (367.78) | -150.65 (-93.61) -20.3% |
275/65-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 25.09 mph (40.38 km/h) |
| 25 mph (40.23 km/h) | 31.36 mph (50.47 km/h) |
| 30 mph (48.28 km/h) | 37.64 mph (60.57 km/h) |
| 35 mph (56.33 km/h) | 43.91 mph (70.66 km/h) |
| 40 mph (64.37 km/h) | 50.18 mph (80.76 km/h) |
| 45 mph (72.42 km/h) | 56.45 mph (90.85 km/h) |
| 50 mph (80.47 km/h) | 62.73 mph (100.95 km/h) |
| 55 mph (88.51 km/h) | 69 mph (111.04 km/h) |
| 60 mph (96.56 km/h) | 75.27 mph (121.14 km/h) |
| 65 mph (104.61 km/h) | 81.54 mph (131.23 km/h) |
| 70 mph (112.65 km/h) | 87.82 mph (141.33 km/h) |
| 75 mph (120.7 km/h) | 94.09 mph (151.42 km/h) |
| 80 mph (128.75 km/h) | 100.36 mph (161.52 km/h) |
| 85 mph (136.79 km/h) | 106.64 mph (171.61 km/h) |
| 90 mph (144.84 km/h) | 112.91 mph (181.71 km/h) |
| 95 mph (152.89 km/h) | 119.18 mph (191.8 km/h) |
| 100 mph (160.93 km/h) | 125.45 mph (201.9 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1506 | 1750 | 1884 | 1968 | 2057 | 2122 | 2192 | 2275 | 2391 | 2506 | 2634 | 2737 | 2923 | 3128 | 3288 | 3391 | 3448 | 3660 | 3955 | 4596 |
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