Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/40-10 | 245/40-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 18.03 (458) | 26.72 (678.6) | 8.69 (220.6) 48.2% |
| Width inches (mm) | 10.04 (255) | 9.65 (245) | -0.39 (-10) -3.9% |
| Circum. inches (mm) | 56.65 (1438.85) | 83.93 (2131.88) | 27.28 (693.04) 48.2% |
| Sidewall Height inches (mm) | 4.02 (102) | 3.86 (98) | -0.16 (-4) -3.9% |
| Revolutions per mile (km) | 1118.49 (695) | 754.89 (469.07) | -363.6 (-225.93) -32.5% |
245/40-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 29.63 mph (47.69 km/h) |
| 25 mph (40.23 km/h) | 37.04 mph (59.61 km/h) |
| 30 mph (48.28 km/h) | 44.45 mph (71.54 km/h) |
| 35 mph (56.33 km/h) | 51.86 mph (83.46 km/h) |
| 40 mph (64.37 km/h) | 59.27 mph (95.38 km/h) |
| 45 mph (72.42 km/h) | 66.67 mph (107.3 km/h) |
| 50 mph (80.47 km/h) | 74.08 mph (119.23 km/h) |
| 55 mph (88.51 km/h) | 81.49 mph (131.15 km/h) |
| 60 mph (96.56 km/h) | 88.9 mph (143.07 km/h) |
| 65 mph (104.61 km/h) | 96.31 mph (154.99 km/h) |
| 70 mph (112.65 km/h) | 103.72 mph (166.92 km/h) |
| 75 mph (120.7 km/h) | 111.12 mph (178.84 km/h) |
| 80 mph (128.75 km/h) | 118.53 mph (190.76 km/h) |
| 85 mph (136.79 km/h) | 125.94 mph (202.68 km/h) |
| 90 mph (144.84 km/h) | 133.35 mph (214.61 km/h) |
| 95 mph (152.89 km/h) | 140.76 mph (226.53 km/h) |
| 100 mph (160.93 km/h) | 148.17 mph (238.45 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1921 | 2232 | 2403 | 2510 | 2624 | 2706 | 2796 | 2902 | 3049 | 3196 | 3360 | 3491 | 3728 | 3989 | 4194 | 4324 | 4398 | 4668 | 5044 | 5861 |
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