Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/25-20 | 275/65-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.41 (645.5) | 34.07 (865.5) | 8.66 (220) 34.1% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 79.84 (2027.9) | 107.05 (2719.05) | 27.21 (691.15) 34.1% |
| Sidewall Height inches (mm) | 2.71 (68.75) | 7.04 (178.75) | 4.33 (110) 160% |
| Revolutions per mile (km) | 793.6 (493.12) | 591.88 (367.78) | -201.72 (-125.35) -25.4% |
275/65-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 26.82 mph (43.16 km/h) |
| 25 mph (40.23 km/h) | 33.52 mph (53.95 km/h) |
| 30 mph (48.28 km/h) | 40.22 mph (64.74 km/h) |
| 35 mph (56.33 km/h) | 46.93 mph (75.52 km/h) |
| 40 mph (64.37 km/h) | 53.63 mph (86.31 km/h) |
| 45 mph (72.42 km/h) | 60.34 mph (97.1 km/h) |
| 50 mph (80.47 km/h) | 67.04 mph (107.89 km/h) |
| 55 mph (88.51 km/h) | 73.75 mph (118.68 km/h) |
| 60 mph (96.56 km/h) | 80.45 mph (129.47 km/h) |
| 65 mph (104.61 km/h) | 87.15 mph (140.26 km/h) |
| 70 mph (112.65 km/h) | 93.86 mph (151.05 km/h) |
| 75 mph (120.7 km/h) | 100.56 mph (161.84 km/h) |
| 80 mph (128.75 km/h) | 107.27 mph (172.63 km/h) |
| 85 mph (136.79 km/h) | 113.97 mph (183.42 km/h) |
| 90 mph (144.84 km/h) | 120.67 mph (194.21 km/h) |
| 95 mph (152.89 km/h) | 127.38 mph (205 km/h) |
| 100 mph (160.93 km/h) | 134.08 mph (215.78 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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