Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/25-20 | 325/60-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.4 (670.5) | 35.35 (898) | 8.96 (227.5) 33.9% |
| Width inches (mm) | 12.8 (325) | 12.8 (325) | 0 (0) 0% |
| Circum. inches (mm) | 82.93 (2106.44) | 111.07 (2821.15) | 28.14 (714.71) 33.9% |
| Sidewall Height inches (mm) | 3.2 (81.25) | 7.68 (195) | 4.48 (113.75) 140% |
| Revolutions per mile (km) | 764.01 (474.73) | 570.46 (354.46) | -193.56 (-120.27) -25.3% |
325/60-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 26.79 mph (43.11 km/h) |
| 25 mph (40.23 km/h) | 33.48 mph (53.88 km/h) |
| 30 mph (48.28 km/h) | 40.18 mph (64.66 km/h) |
| 35 mph (56.33 km/h) | 46.88 mph (75.44 km/h) |
| 40 mph (64.37 km/h) | 53.57 mph (86.22 km/h) |
| 45 mph (72.42 km/h) | 60.27 mph (96.99 km/h) |
| 50 mph (80.47 km/h) | 66.96 mph (107.77 km/h) |
| 55 mph (88.51 km/h) | 73.66 mph (118.55 km/h) |
| 60 mph (96.56 km/h) | 80.36 mph (129.32 km/h) |
| 65 mph (104.61 km/h) | 87.05 mph (140.1 km/h) |
| 70 mph (112.65 km/h) | 93.75 mph (150.88 km/h) |
| 75 mph (120.7 km/h) | 100.45 mph (161.65 km/h) |
| 80 mph (128.75 km/h) | 107.14 mph (172.43 km/h) |
| 85 mph (136.79 km/h) | 113.84 mph (183.21 km/h) |
| 90 mph (144.84 km/h) | 120.54 mph (193.99 km/h) |
| 95 mph (152.89 km/h) | 127.23 mph (204.76 km/h) |
| 100 mph (160.93 km/h) | 133.93 mph (215.54 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1452 | 1686 | 1816 | 1896 | 1983 | 2045 | 2113 | 2193 | 2304 | 2415 | 2539 | 2638 | 2817 | 3015 | 3169 | 3268 | 3323 | 3527 | 3811 | 4429 |
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