Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/65-17 | 275/65-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.03 (737.3) | 34.07 (865.5) | 5.05 (128.2) 17.4% |
| Width inches (mm) | 9.25 (235) | 10.83 (275) | 1.57 (40) 17% |
| Circum. inches (mm) | 91.19 (2316.3) | 107.05 (2719.05) | 15.86 (402.75) 17.4% |
| Sidewall Height inches (mm) | 6.01 (152.75) | 7.04 (178.75) | 1.02 (26) 17% |
| Revolutions per mile (km) | 694.79 (431.72) | 591.88 (367.78) | -102.91 (-63.95) -14.8% |
275/65-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.48 mph (37.78 km/h) |
| 25 mph (40.23 km/h) | 29.35 mph (47.23 km/h) |
| 30 mph (48.28 km/h) | 35.22 mph (56.68 km/h) |
| 35 mph (56.33 km/h) | 41.09 mph (66.12 km/h) |
| 40 mph (64.37 km/h) | 46.96 mph (75.57 km/h) |
| 45 mph (72.42 km/h) | 52.82 mph (85.01 km/h) |
| 50 mph (80.47 km/h) | 58.69 mph (94.46 km/h) |
| 55 mph (88.51 km/h) | 64.56 mph (103.9 km/h) |
| 60 mph (96.56 km/h) | 70.43 mph (113.35 km/h) |
| 65 mph (104.61 km/h) | 76.3 mph (122.8 km/h) |
| 70 mph (112.65 km/h) | 82.17 mph (132.24 km/h) |
| 75 mph (120.7 km/h) | 88.04 mph (141.69 km/h) |
| 80 mph (128.75 km/h) | 93.91 mph (151.13 km/h) |
| 85 mph (136.79 km/h) | 99.78 mph (160.58 km/h) |
| 90 mph (144.84 km/h) | 105.65 mph (170.03 km/h) |
| 95 mph (152.89 km/h) | 111.52 mph (179.47 km/h) |
| 100 mph (160.93 km/h) | 117.39 mph (188.92 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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