Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/70-20 | 305/55-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 36.26 (921) | 33.21 (843.5) | -3.05 (-77.5) -8.4% |
| Width inches (mm) | 11.61 (295) | 12.01 (305) | 0.39 (10) 3.4% |
| Circum. inches (mm) | 113.91 (2893.41) | 104.33 (2649.93) | -9.59 (-243.47) -8.4% |
| Sidewall Height inches (mm) | 8.13 (206.5) | 6.6 (167.75) | -1.53 (-38.75) -18.8% |
| Revolutions per mile (km) | 556.21 (345.61) | 607.31 (377.37) | 51.1 (31.75) 9.2% |
305/55-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.32 mph (29.48 km/h) |
| 25 mph (40.23 km/h) | 22.9 mph (36.85 km/h) |
| 30 mph (48.28 km/h) | 27.48 mph (44.22 km/h) |
| 35 mph (56.33 km/h) | 32.05 mph (51.59 km/h) |
| 40 mph (64.37 km/h) | 36.63 mph (58.96 km/h) |
| 45 mph (72.42 km/h) | 41.21 mph (66.33 km/h) |
| 50 mph (80.47 km/h) | 45.79 mph (73.7 km/h) |
| 55 mph (88.51 km/h) | 50.37 mph (81.07 km/h) |
| 60 mph (96.56 km/h) | 54.95 mph (88.44 km/h) |
| 65 mph (104.61 km/h) | 59.53 mph (95.81 km/h) |
| 70 mph (112.65 km/h) | 64.11 mph (103.17 km/h) |
| 75 mph (120.7 km/h) | 68.69 mph (110.54 km/h) |
| 80 mph (128.75 km/h) | 73.27 mph (117.91 km/h) |
| 85 mph (136.79 km/h) | 77.85 mph (125.28 km/h) |
| 90 mph (144.84 km/h) | 82.43 mph (132.65 km/h) |
| 95 mph (152.89 km/h) | 87.01 mph (140.02 km/h) |
| 100 mph (160.93 km/h) | 91.59 mph (147.39 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1546 | 1795 | 1934 | 2019 | 2111 | 2177 | 2249 | 2335 | 2453 | 2571 | 2703 | 2808 | 2999 | 3209 | 3374 | 3479 | 3538 | 3755 | 4058 | 4715 |
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