Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-13 | 225/75-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.34 (618.2) | 28.29 (718.5) | 3.95 (100.3) 16.2% |
| Width inches (mm) | 7.09 (180) | 8.86 (225) | 1.77 (45) 25% |
| Circum. inches (mm) | 76.46 (1942.13) | 88.87 (2257.23) | 12.41 (315.1) 16.2% |
| Sidewall Height inches (mm) | 5.67 (144) | 6.64 (168.75) | 0.97 (24.75) 17.2% |
| Revolutions per mile (km) | 828.65 (514.9) | 712.97 (443.02) | -115.68 (-71.88) -14% |
225/75-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.24 mph (37.41 km/h) |
| 25 mph (40.23 km/h) | 29.06 mph (46.76 km/h) |
| 30 mph (48.28 km/h) | 34.87 mph (56.11 km/h) |
| 35 mph (56.33 km/h) | 40.68 mph (65.47 km/h) |
| 40 mph (64.37 km/h) | 46.49 mph (74.82 km/h) |
| 45 mph (72.42 km/h) | 52.3 mph (84.17 km/h) |
| 50 mph (80.47 km/h) | 58.11 mph (93.52 km/h) |
| 55 mph (88.51 km/h) | 63.92 mph (102.88 km/h) |
| 60 mph (96.56 km/h) | 69.73 mph (112.23 km/h) |
| 65 mph (104.61 km/h) | 75.55 mph (121.58 km/h) |
| 70 mph (112.65 km/h) | 81.36 mph (130.93 km/h) |
| 75 mph (120.7 km/h) | 87.17 mph (140.28 km/h) |
| 80 mph (128.75 km/h) | 92.98 mph (149.64 km/h) |
| 85 mph (136.79 km/h) | 98.79 mph (158.99 km/h) |
| 90 mph (144.84 km/h) | 104.6 mph (168.34 km/h) |
| 95 mph (152.89 km/h) | 110.41 mph (177.69 km/h) |
| 100 mph (160.93 km/h) | 116.22 mph (187.05 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1814 | 2108 | 2270 | 2370 | 2478 | 2556 | 2640 | 2741 | 2880 | 3019 | 3173 | 3297 | 3521 | 3768 | 3961 | 4084 | 4154 | 4409 | 4764 | 5536 |
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