Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/55-20 | 305/30-26 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.91 (810.5) | 33.2 (843.4) | 1.3 (32.9) 4.1% |
| Width inches (mm) | 10.83 (275) | 12.01 (305) | 1.18 (30) 10.9% |
| Circum. inches (mm) | 100.25 (2546.26) | 104.32 (2649.62) | 4.07 (103.36) 4.1% |
| Sidewall Height inches (mm) | 5.95 (151.25) | 3.6 (91.5) | -2.35 (-59.75) -39.5% |
| Revolutions per mile (km) | 632.04 (392.73) | 607.39 (377.41) | -24.66 (-15.32) -3.9% |
305/30-26 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.81 mph (33.49 km/h) |
| 25 mph (40.23 km/h) | 26.01 mph (41.87 km/h) |
| 30 mph (48.28 km/h) | 31.22 mph (50.24 km/h) |
| 35 mph (56.33 km/h) | 36.42 mph (58.61 km/h) |
| 40 mph (64.37 km/h) | 41.62 mph (66.99 km/h) |
| 45 mph (72.42 km/h) | 46.83 mph (75.36 km/h) |
| 50 mph (80.47 km/h) | 52.03 mph (83.73 km/h) |
| 55 mph (88.51 km/h) | 57.23 mph (92.11 km/h) |
| 60 mph (96.56 km/h) | 62.44 mph (100.48 km/h) |
| 65 mph (104.61 km/h) | 67.64 mph (108.85 km/h) |
| 70 mph (112.65 km/h) | 72.84 mph (117.23 km/h) |
| 75 mph (120.7 km/h) | 78.04 mph (125.6 km/h) |
| 80 mph (128.75 km/h) | 83.25 mph (133.97 km/h) |
| 85 mph (136.79 km/h) | 88.45 mph (142.35 km/h) |
| 90 mph (144.84 km/h) | 93.65 mph (150.72 km/h) |
| 95 mph (152.89 km/h) | 98.86 mph (159.09 km/h) |
| 100 mph (160.93 km/h) | 104.06 mph (167.47 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 | 1796 | 1934 | 2019 | 2111 | 2177 | 2249 | 2335 | 2453 | 2572 | 2703 | 2809 | 2999 | 3210 | 3374 | 3479 | 3539 | 3756 | 4058 | 4716 |
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