Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/25-20 | 345/30-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.4 (670.5) | 27.15 (689.6) | 0.75 (19.1) 2.8% |
| Width inches (mm) | 12.8 (325) | 13.58 (345) | 0.79 (20) 6.2% |
| Circum. inches (mm) | 82.93 (2106.44) | 85.29 (2166.44) | 2.36 (60) 2.8% |
| Sidewall Height inches (mm) | 3.2 (81.25) | 4.07 (103.5) | 0.88 (22.25) 27.4% |
| Revolutions per mile (km) | 764.01 (474.73) | 742.85 (461.59) | -21.16 (-13.15) -2.8% |
345/30-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.57 mph (33.1 km/h) |
| 25 mph (40.23 km/h) | 25.71 mph (41.38 km/h) |
| 30 mph (48.28 km/h) | 30.85 mph (49.66 km/h) |
| 35 mph (56.33 km/h) | 36 mph (57.93 km/h) |
| 40 mph (64.37 km/h) | 41.14 mph (66.21 km/h) |
| 45 mph (72.42 km/h) | 46.28 mph (74.48 km/h) |
| 50 mph (80.47 km/h) | 51.42 mph (82.76 km/h) |
| 55 mph (88.51 km/h) | 56.57 mph (91.04 km/h) |
| 60 mph (96.56 km/h) | 61.71 mph (99.31 km/h) |
| 65 mph (104.61 km/h) | 66.85 mph (107.59 km/h) |
| 70 mph (112.65 km/h) | 71.99 mph (115.86 km/h) |
| 75 mph (120.7 km/h) | 77.14 mph (124.14 km/h) |
| 80 mph (128.75 km/h) | 82.28 mph (132.42 km/h) |
| 85 mph (136.79 km/h) | 87.42 mph (140.69 km/h) |
| 90 mph (144.84 km/h) | 92.56 mph (148.97 km/h) |
| 95 mph (152.89 km/h) | 97.71 mph (157.24 km/h) |
| 100 mph (160.93 km/h) | 102.85 mph (165.52 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1890 | 2196 | 2365 | 2470 | 2582 | 2663 | 2751 | 2856 | 3001 | 3145 | 3306 | 3435 | 3668 | 3926 | 4127 | 4255 | 4328 | 4593 | 4963 | 5768 |
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