Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 315/60-20 | 275/65-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.88 (886) | 34.07 (865.5) | -0.81 (-20.5) -2.3% |
| Width inches (mm) | 12.4 (315) | 10.83 (275) | -1.57 (-40) -12.7% |
| Circum. inches (mm) | 109.58 (2783.45) | 107.05 (2719.05) | -2.54 (-64.4) -2.3% |
| Sidewall Height inches (mm) | 7.44 (189) | 7.04 (178.75) | -0.4 (-10.25) -5.4% |
| Revolutions per mile (km) | 578.18 (359.27) | 591.88 (367.78) | 13.69 (8.51) 2.4% |
275/65-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.54 mph (31.44 km/h) |
| 25 mph (40.23 km/h) | 24.42 mph (39.3 km/h) |
| 30 mph (48.28 km/h) | 29.31 mph (47.16 km/h) |
| 35 mph (56.33 km/h) | 34.19 mph (55.02 km/h) |
| 40 mph (64.37 km/h) | 39.07 mph (62.88 km/h) |
| 45 mph (72.42 km/h) | 43.96 mph (70.74 km/h) |
| 50 mph (80.47 km/h) | 48.84 mph (78.61 km/h) |
| 55 mph (88.51 km/h) | 53.73 mph (86.47 km/h) |
| 60 mph (96.56 km/h) | 58.61 mph (94.33 km/h) |
| 65 mph (104.61 km/h) | 63.5 mph (102.19 km/h) |
| 70 mph (112.65 km/h) | 68.38 mph (110.05 km/h) |
| 75 mph (120.7 km/h) | 73.26 mph (117.91 km/h) |
| 80 mph (128.75 km/h) | 78.15 mph (125.77 km/h) |
| 85 mph (136.79 km/h) | 83.03 mph (133.63 km/h) |
| 90 mph (144.84 km/h) | 87.92 mph (141.49 km/h) |
| 95 mph (152.89 km/h) | 92.8 mph (149.35 km/h) |
| 100 mph (160.93 km/h) | 97.69 mph (157.21 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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