Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/40-20 | 275/40-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.72 (704) | 25.66 (651.8) | -2.06 (-52.2) -7.4% |
| Width inches (mm) | 9.65 (245) | 10.83 (275) | 1.18 (30) 12.2% |
| Circum. inches (mm) | 87.07 (2211.68) | 80.62 (2047.69) | -6.46 (-163.99) -7.4% |
| Sidewall Height inches (mm) | 3.86 (98) | 4.33 (110) | 0.47 (12) 12.2% |
| Revolutions per mile (km) | 727.66 (452.14) | 785.93 (488.35) | 58.28 (36.21) 8% |
275/40-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.52 mph (29.8 km/h) |
| 25 mph (40.23 km/h) | 23.15 mph (37.25 km/h) |
| 30 mph (48.28 km/h) | 27.78 mph (44.7 km/h) |
| 35 mph (56.33 km/h) | 32.4 mph (52.15 km/h) |
| 40 mph (64.37 km/h) | 37.03 mph (59.6 km/h) |
| 45 mph (72.42 km/h) | 41.66 mph (67.05 km/h) |
| 50 mph (80.47 km/h) | 46.29 mph (74.5 km/h) |
| 55 mph (88.51 km/h) | 50.92 mph (81.95 km/h) |
| 60 mph (96.56 km/h) | 55.55 mph (89.4 km/h) |
| 65 mph (104.61 km/h) | 60.18 mph (96.85 km/h) |
| 70 mph (112.65 km/h) | 64.81 mph (104.3 km/h) |
| 75 mph (120.7 km/h) | 69.44 mph (111.75 km/h) |
| 80 mph (128.75 km/h) | 74.07 mph (119.2 km/h) |
| 85 mph (136.79 km/h) | 78.7 mph (126.65 km/h) |
| 90 mph (144.84 km/h) | 83.33 mph (134.1 km/h) |
| 95 mph (152.89 km/h) | 87.96 mph (141.55 km/h) |
| 100 mph (160.93 km/h) | 92.59 mph (149 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2000 | 2323 | 2502 | 2613 | 2732 | 2817 | 2911 | 3021 | 3175 | 3328 | 3498 | 3634 | 3881 | 4153 | 4366 | 4502 | 4579 | 4860 | 5251 | 6102 |
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