Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/30-19 | 225/40-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.02 (635.6) | 26.09 (662.6) | 1.06 (27) 4.2% |
| Width inches (mm) | 10.04 (255) | 8.86 (225) | -1.18 (-30) -11.8% |
| Circum. inches (mm) | 78.61 (1996.8) | 81.95 (2081.62) | 3.34 (84.82) 4.2% |
| Sidewall Height inches (mm) | 3.01 (76.5) | 3.54 (90) | 0.53 (13.5) 17.6% |
| Revolutions per mile (km) | 805.96 (500.8) | 773.12 (480.39) | -32.84 (-20.41) -4.1% |
225/40-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.85 mph (33.55 km/h) |
| 25 mph (40.23 km/h) | 26.06 mph (41.94 km/h) |
| 30 mph (48.28 km/h) | 31.27 mph (50.33 km/h) |
| 35 mph (56.33 km/h) | 36.49 mph (58.72 km/h) |
| 40 mph (64.37 km/h) | 41.7 mph (67.11 km/h) |
| 45 mph (72.42 km/h) | 46.91 mph (75.5 km/h) |
| 50 mph (80.47 km/h) | 52.12 mph (83.89 km/h) |
| 55 mph (88.51 km/h) | 57.34 mph (92.27 km/h) |
| 60 mph (96.56 km/h) | 62.55 mph (100.66 km/h) |
| 65 mph (104.61 km/h) | 67.76 mph (109.05 km/h) |
| 70 mph (112.65 km/h) | 72.97 mph (117.44 km/h) |
| 75 mph (120.7 km/h) | 78.19 mph (125.83 km/h) |
| 80 mph (128.75 km/h) | 83.4 mph (134.22 km/h) |
| 85 mph (136.79 km/h) | 88.61 mph (142.61 km/h) |
| 90 mph (144.84 km/h) | 93.82 mph (150.99 km/h) |
| 95 mph (152.89 km/h) | 99.04 mph (159.38 km/h) |
| 100 mph (160.93 km/h) | 104.25 mph (167.77 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1967 | 2286 | 2461 | 2570 | 2687 | 2771 | 2863 | 2972 | 3123 | 3273 | 3441 | 3575 | 3818 | 4086 | 4295 | 4429 | 4504 | 4780 | 5166 | 6003 |
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