Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/25-20 | 345/30-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.81 (655.5) | 28.15 (715) | 2.34 (59.5) 9.1% |
| Width inches (mm) | 11.61 (295) | 13.58 (345) | 1.97 (50) 16.9% |
| Circum. inches (mm) | 81.08 (2059.31) | 88.43 (2246.24) | 7.36 (186.92) 9.1% |
| Sidewall Height inches (mm) | 2.9 (73.75) | 4.07 (103.5) | 1.17 (29.75) 40.3% |
| Revolutions per mile (km) | 781.5 (485.6) | 716.46 (445.19) | -65.03 (-40.41) -8.3% |
345/30-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.82 mph (35.11 km/h) |
| 25 mph (40.23 km/h) | 27.27 mph (43.89 km/h) |
| 30 mph (48.28 km/h) | 32.72 mph (52.66 km/h) |
| 35 mph (56.33 km/h) | 38.18 mph (61.44 km/h) |
| 40 mph (64.37 km/h) | 43.63 mph (70.22 km/h) |
| 45 mph (72.42 km/h) | 49.08 mph (78.99 km/h) |
| 50 mph (80.47 km/h) | 54.54 mph (87.77 km/h) |
| 55 mph (88.51 km/h) | 59.99 mph (96.55 km/h) |
| 60 mph (96.56 km/h) | 65.45 mph (105.33 km/h) |
| 65 mph (104.61 km/h) | 70.9 mph (114.1 km/h) |
| 70 mph (112.65 km/h) | 76.35 mph (122.88 km/h) |
| 75 mph (120.7 km/h) | 81.81 mph (131.66 km/h) |
| 80 mph (128.75 km/h) | 87.26 mph (140.43 km/h) |
| 85 mph (136.79 km/h) | 92.72 mph (149.21 km/h) |
| 90 mph (144.84 km/h) | 98.17 mph (157.99 km/h) |
| 95 mph (152.89 km/h) | 103.62 mph (166.77 km/h) |
| 100 mph (160.93 km/h) | 109.08 mph (175.54 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1823 | 2118 | 2281 | 2382 | 2490 | 2568 | 2653 | 2754 | 2894 | 3034 | 3189 | 3313 | 3538 | 3786 | 3980 | 4104 | 4174 | 4430 | 4787 | 5563 |
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