Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/60-20 | 275/65-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.05 (814) | 34.07 (865.5) | 2.03 (51.5) 6.3% |
| Width inches (mm) | 10.04 (255) | 10.83 (275) | 0.79 (20) 7.8% |
| Circum. inches (mm) | 100.68 (2557.26) | 107.05 (2719.05) | 6.37 (161.79) 6.3% |
| Sidewall Height inches (mm) | 6.02 (153) | 7.04 (178.75) | 1.01 (25.75) 16.8% |
| Revolutions per mile (km) | 629.32 (391.04) | 591.88 (367.78) | -37.45 (-23.27) -6% |
275/65-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.27 mph (34.22 km/h) |
| 25 mph (40.23 km/h) | 26.58 mph (42.78 km/h) |
| 30 mph (48.28 km/h) | 31.9 mph (51.34 km/h) |
| 35 mph (56.33 km/h) | 37.21 mph (59.89 km/h) |
| 40 mph (64.37 km/h) | 42.53 mph (68.45 km/h) |
| 45 mph (72.42 km/h) | 47.85 mph (77 km/h) |
| 50 mph (80.47 km/h) | 53.16 mph (85.56 km/h) |
| 55 mph (88.51 km/h) | 58.48 mph (94.11 km/h) |
| 60 mph (96.56 km/h) | 63.8 mph (102.67 km/h) |
| 65 mph (104.61 km/h) | 69.11 mph (111.23 km/h) |
| 70 mph (112.65 km/h) | 74.43 mph (119.78 km/h) |
| 75 mph (120.7 km/h) | 79.75 mph (128.34 km/h) |
| 80 mph (128.75 km/h) | 85.06 mph (136.89 km/h) |
| 85 mph (136.79 km/h) | 90.38 mph (145.45 km/h) |
| 90 mph (144.84 km/h) | 95.69 mph (154.01 km/h) |
| 95 mph (152.89 km/h) | 101.01 mph (162.56 km/h) |
| 100 mph (160.93 km/h) | 106.33 mph (171.12 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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