Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/30-19 | 255/40-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.2 (665.6) | 27.03 (686.6) | 0.83 (21) 3.2% |
| Width inches (mm) | 12.01 (305) | 10.04 (255) | -1.97 (-50) -16.4% |
| Circum. inches (mm) | 82.32 (2091.04) | 84.92 (2157.02) | 2.6 (65.97) 3.2% |
| Sidewall Height inches (mm) | 3.6 (91.5) | 4.02 (102) | 0.41 (10.5) 11.5% |
| Revolutions per mile (km) | 769.64 (478.23) | 746.1 (463.6) | -23.54 (-14.63) -3.1% |
255/40-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.63 mph (33.2 km/h) |
| 25 mph (40.23 km/h) | 25.79 mph (41.5 km/h) |
| 30 mph (48.28 km/h) | 30.95 mph (49.8 km/h) |
| 35 mph (56.33 km/h) | 36.1 mph (58.1 km/h) |
| 40 mph (64.37 km/h) | 41.26 mph (66.4 km/h) |
| 45 mph (72.42 km/h) | 46.42 mph (74.71 km/h) |
| 50 mph (80.47 km/h) | 51.58 mph (83.01 km/h) |
| 55 mph (88.51 km/h) | 56.74 mph (91.31 km/h) |
| 60 mph (96.56 km/h) | 61.89 mph (99.61 km/h) |
| 65 mph (104.61 km/h) | 67.05 mph (107.91 km/h) |
| 70 mph (112.65 km/h) | 72.21 mph (116.21 km/h) |
| 75 mph (120.7 km/h) | 77.37 mph (124.51 km/h) |
| 80 mph (128.75 km/h) | 82.52 mph (132.81 km/h) |
| 85 mph (136.79 km/h) | 87.68 mph (141.11 km/h) |
| 90 mph (144.84 km/h) | 92.84 mph (149.41 km/h) |
| 95 mph (152.89 km/h) | 98 mph (157.71 km/h) |
| 100 mph (160.93 km/h) | 103.16 mph (166.01 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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