Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 345/25-20 | 325/25-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.79 (680.5) | 26.4 (670.5) | -0.39 (-10) -1.5% |
| Width inches (mm) | 13.58 (345) | 12.8 (325) | -0.79 (-20) -5.8% |
| Circum. inches (mm) | 84.17 (2137.85) | 82.93 (2106.44) | -1.24 (-31.42) -1.5% |
| Sidewall Height inches (mm) | 3.4 (86.25) | 3.2 (81.25) | -0.2 (-5) -5.8% |
| Revolutions per mile (km) | 752.78 (467.76) | 764.01 (474.73) | 11.23 (6.98) 1.5% |
325/25-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.71 mph (31.71 km/h) |
| 25 mph (40.23 km/h) | 24.63 mph (39.64 km/h) |
| 30 mph (48.28 km/h) | 29.56 mph (47.57 km/h) |
| 35 mph (56.33 km/h) | 34.49 mph (55.5 km/h) |
| 40 mph (64.37 km/h) | 39.41 mph (63.43 km/h) |
| 45 mph (72.42 km/h) | 44.34 mph (71.36 km/h) |
| 50 mph (80.47 km/h) | 49.27 mph (79.28 km/h) |
| 55 mph (88.51 km/h) | 54.19 mph (87.21 km/h) |
| 60 mph (96.56 km/h) | 59.12 mph (95.14 km/h) |
| 65 mph (104.61 km/h) | 64.04 mph (103.07 km/h) |
| 70 mph (112.65 km/h) | 68.97 mph (111 km/h) |
| 75 mph (120.7 km/h) | 73.9 mph (118.93 km/h) |
| 80 mph (128.75 km/h) | 78.82 mph (126.86 km/h) |
| 85 mph (136.79 km/h) | 83.75 mph (134.78 km/h) |
| 90 mph (144.84 km/h) | 88.68 mph (142.71 km/h) |
| 95 mph (152.89 km/h) | 93.6 mph (150.64 km/h) |
| 100 mph (160.93 km/h) | 98.53 mph (158.57 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1944 | 2259 | 2432 | 2540 | 2656 | 2739 | 2830 | 2937 | 3086 | 3235 | 3400 | 3533 | 3773 | 4037 | 4244 | 4377 | 4451 | 4724 | 5105 | 5932 |
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