Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/45-21 | 225/45-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.97 (735.9) | 26.97 (685.1) | -2 (-50.8) -6.9% |
| Width inches (mm) | 8.86 (225) | 8.86 (225) | 0 (0) 0% |
| Circum. inches (mm) | 91.02 (2311.9) | 84.74 (2152.31) | -6.28 (-159.59) -6.9% |
| Sidewall Height inches (mm) | 3.99 (101.25) | 3.99 (101.25) | 0 (0) 0% |
| Revolutions per mile (km) | 696.11 (432.54) | 747.73 (464.62) | 51.62 (32.07) 7.4% |
225/45-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.62 mph (29.97 km/h) |
| 25 mph (40.23 km/h) | 23.27 mph (37.46 km/h) |
| 30 mph (48.28 km/h) | 27.93 mph (44.95 km/h) |
| 35 mph (56.33 km/h) | 32.58 mph (52.44 km/h) |
| 40 mph (64.37 km/h) | 37.24 mph (59.93 km/h) |
| 45 mph (72.42 km/h) | 41.89 mph (67.42 km/h) |
| 50 mph (80.47 km/h) | 46.55 mph (74.91 km/h) |
| 55 mph (88.51 km/h) | 51.2 mph (82.4 km/h) |
| 60 mph (96.56 km/h) | 55.86 mph (89.9 km/h) |
| 65 mph (104.61 km/h) | 60.51 mph (97.39 km/h) |
| 70 mph (112.65 km/h) | 65.17 mph (104.88 km/h) |
| 75 mph (120.7 km/h) | 69.82 mph (112.37 km/h) |
| 80 mph (128.75 km/h) | 74.48 mph (119.86 km/h) |
| 85 mph (136.79 km/h) | 79.13 mph (127.35 km/h) |
| 90 mph (144.84 km/h) | 83.79 mph (134.84 km/h) |
| 95 mph (152.89 km/h) | 88.44 mph (142.33 km/h) |
| 100 mph (160.93 km/h) | 93.1 mph (149.83 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1903 | 2211 | 2381 | 2486 | 2599 | 2680 | 2769 | 2874 | 3020 | 3166 | 3328 | 3457 | 3692 | 3951 | 4154 | 4283 | 4356 | 4623 | 4996 | 5806 |
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