Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/75-15 | 275/55-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.88 (733.5) | 31.91 (810.5) | 3.03 (77) 10.5% |
| Width inches (mm) | 9.25 (235) | 10.83 (275) | 1.57 (40) 17% |
| Circum. inches (mm) | 90.72 (2304.36) | 100.25 (2546.26) | 9.52 (241.9) 10.5% |
| Sidewall Height inches (mm) | 6.94 (176.25) | 5.95 (151.25) | -0.98 (-25) -14.2% |
| Revolutions per mile (km) | 698.39 (433.96) | 632.04 (392.73) | -66.35 (-41.23) -9.5% |
275/55-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.1 mph (35.57 km/h) |
| 25 mph (40.23 km/h) | 27.62 mph (44.46 km/h) |
| 30 mph (48.28 km/h) | 33.15 mph (53.35 km/h) |
| 35 mph (56.33 km/h) | 38.67 mph (62.24 km/h) |
| 40 mph (64.37 km/h) | 44.2 mph (71.13 km/h) |
| 45 mph (72.42 km/h) | 49.72 mph (80.02 km/h) |
| 50 mph (80.47 km/h) | 55.25 mph (88.91 km/h) |
| 55 mph (88.51 km/h) | 60.77 mph (97.81 km/h) |
| 60 mph (96.56 km/h) | 66.3 mph (106.7 km/h) |
| 65 mph (104.61 km/h) | 71.82 mph (115.59 km/h) |
| 70 mph (112.65 km/h) | 77.35 mph (124.48 km/h) |
| 75 mph (120.7 km/h) | 82.87 mph (133.37 km/h) |
| 80 mph (128.75 km/h) | 88.4 mph (142.26 km/h) |
| 85 mph (136.79 km/h) | 93.92 mph (151.15 km/h) |
| 90 mph (144.84 km/h) | 99.45 mph (160.05 km/h) |
| 95 mph (152.89 km/h) | 104.97 mph (168.94 km/h) |
| 100 mph (160.93 km/h) | 110.5 mph (177.83 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1608 | 1869 | 2012 | 2101 | 2197 | 2265 | 2341 | 2430 | 2553 | 2676 | 2813 | 2923 | 3121 | 3340 | 3511 | 3621 | 3682 | 3908 | 4223 | 4907 |
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