Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/30-21 | 255/40-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.26 (692.4) | 27.03 (686.6) | -0.23 (-5.8) -0.8% |
| Width inches (mm) | 10.43 (265) | 10.04 (255) | -0.39 (-10) -3.8% |
| Circum. inches (mm) | 85.64 (2175.24) | 84.92 (2157.02) | -0.72 (-18.22) -0.8% |
| Sidewall Height inches (mm) | 3.13 (79.5) | 4.02 (102) | 0.89 (22.5) 28.3% |
| Revolutions per mile (km) | 739.85 (459.72) | 746.1 (463.6) | 6.25 (3.88) 0.8% |
255/40-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.83 mph (31.92 km/h) |
| 25 mph (40.23 km/h) | 24.79 mph (39.9 km/h) |
| 30 mph (48.28 km/h) | 29.75 mph (47.88 km/h) |
| 35 mph (56.33 km/h) | 34.71 mph (55.86 km/h) |
| 40 mph (64.37 km/h) | 39.66 mph (63.83 km/h) |
| 45 mph (72.42 km/h) | 44.62 mph (71.81 km/h) |
| 50 mph (80.47 km/h) | 49.58 mph (79.79 km/h) |
| 55 mph (88.51 km/h) | 54.54 mph (87.77 km/h) |
| 60 mph (96.56 km/h) | 59.5 mph (95.75 km/h) |
| 65 mph (104.61 km/h) | 64.46 mph (103.73 km/h) |
| 70 mph (112.65 km/h) | 69.41 mph (111.71 km/h) |
| 75 mph (120.7 km/h) | 74.37 mph (119.69 km/h) |
| 80 mph (128.75 km/h) | 79.33 mph (127.67 km/h) |
| 85 mph (136.79 km/h) | 84.29 mph (135.65 km/h) |
| 90 mph (144.84 km/h) | 89.25 mph (143.63 km/h) |
| 95 mph (152.89 km/h) | 94.2 mph (151.61 km/h) |
| 100 mph (160.93 km/h) | 99.16 mph (159.59 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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