Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/25-20 | 275/30-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.4 (670.5) | 25.5 (647.6) | -0.9 (-22.9) -3.4% |
| Width inches (mm) | 12.8 (325) | 10.83 (275) | -1.97 (-50) -15.4% |
| Circum. inches (mm) | 82.93 (2106.44) | 80.1 (2034.5) | -2.83 (-71.94) -3.4% |
| Sidewall Height inches (mm) | 3.2 (81.25) | 3.25 (82.5) | 0.05 (1.25) 1.5% |
| Revolutions per mile (km) | 764.01 (474.73) | 791.03 (491.52) | 27.02 (16.79) 3.5% |
275/30-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.32 mph (31.09 km/h) |
| 25 mph (40.23 km/h) | 24.15 mph (38.86 km/h) |
| 30 mph (48.28 km/h) | 28.98 mph (46.63 km/h) |
| 35 mph (56.33 km/h) | 33.8 mph (54.4 km/h) |
| 40 mph (64.37 km/h) | 38.63 mph (62.18 km/h) |
| 45 mph (72.42 km/h) | 43.46 mph (69.95 km/h) |
| 50 mph (80.47 km/h) | 48.29 mph (77.72 km/h) |
| 55 mph (88.51 km/h) | 53.12 mph (85.49 km/h) |
| 60 mph (96.56 km/h) | 57.95 mph (93.26 km/h) |
| 65 mph (104.61 km/h) | 62.78 mph (101.03 km/h) |
| 70 mph (112.65 km/h) | 67.61 mph (108.81 km/h) |
| 75 mph (120.7 km/h) | 72.44 mph (116.58 km/h) |
| 80 mph (128.75 km/h) | 77.27 mph (124.35 km/h) |
| 85 mph (136.79 km/h) | 82.1 mph (132.12 km/h) |
| 90 mph (144.84 km/h) | 86.93 mph (139.89 km/h) |
| 95 mph (152.89 km/h) | 91.76 mph (147.67 km/h) |
| 100 mph (160.93 km/h) | 96.58 mph (155.44 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2013 | 2339 | 2518 | 2630 | 2750 | 2835 | 2930 | 3041 | 3195 | 3349 | 3521 | 3658 | 3906 | 4180 | 4394 | 4531 | 4609 | 4891 | 5285 | 6142 |
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