Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/55-18 | 255/40-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.74 (704.7) | 27.03 (686.6) | -0.71 (-18.1) -2.6% |
| Width inches (mm) | 8.86 (225) | 10.04 (255) | 1.18 (30) 13.3% |
| Circum. inches (mm) | 87.16 (2213.88) | 84.92 (2157.02) | -2.24 (-56.86) -2.6% |
| Sidewall Height inches (mm) | 4.87 (123.75) | 4.02 (102) | -0.86 (-21.75) -17.6% |
| Revolutions per mile (km) | 726.93 (451.69) | 746.1 (463.6) | 19.16 (11.91) 2.6% |
255/40-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.49 mph (31.36 km/h) |
| 25 mph (40.23 km/h) | 24.36 mph (39.2 km/h) |
| 30 mph (48.28 km/h) | 29.23 mph (47.04 km/h) |
| 35 mph (56.33 km/h) | 34.1 mph (54.88 km/h) |
| 40 mph (64.37 km/h) | 38.97 mph (62.72 km/h) |
| 45 mph (72.42 km/h) | 43.84 mph (70.56 km/h) |
| 50 mph (80.47 km/h) | 48.72 mph (78.4 km/h) |
| 55 mph (88.51 km/h) | 53.59 mph (86.24 km/h) |
| 60 mph (96.56 km/h) | 58.46 mph (94.08 km/h) |
| 65 mph (104.61 km/h) | 63.33 mph (101.92 km/h) |
| 70 mph (112.65 km/h) | 68.2 mph (109.76 km/h) |
| 75 mph (120.7 km/h) | 73.07 mph (117.6 km/h) |
| 80 mph (128.75 km/h) | 77.95 mph (125.44 km/h) |
| 85 mph (136.79 km/h) | 82.82 mph (133.28 km/h) |
| 90 mph (144.84 km/h) | 87.69 mph (141.12 km/h) |
| 95 mph (152.89 km/h) | 92.56 mph (148.96 km/h) |
| 100 mph (160.93 km/h) | 97.43 mph (156.8 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1899 | 2206 | 2375 | 2480 | 2594 | 2674 | 2763 | 2868 | 3014 | 3159 | 3321 | 3450 | 3684 | 3943 | 4145 | 4274 | 4347 | 4613 | 4985 | 5793 |
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