Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/60-20 | 255/40-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.8 (706) | 27.03 (686.6) | -0.76 (-19.4) -2.7% |
| Width inches (mm) | 6.5 (165) | 10.04 (255) | 3.54 (90) 54.5% |
| Circum. inches (mm) | 87.32 (2217.96) | 84.92 (2157.02) | -2.4 (-60.95) -2.7% |
| Sidewall Height inches (mm) | 3.9 (99) | 4.02 (102) | 0.12 (3) 3% |
| Revolutions per mile (km) | 725.6 (450.86) | 746.1 (463.6) | 20.5 (12.74) 2.8% |
255/40-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.45 mph (31.3 km/h) |
| 25 mph (40.23 km/h) | 24.31 mph (39.13 km/h) |
| 30 mph (48.28 km/h) | 29.18 mph (46.95 km/h) |
| 35 mph (56.33 km/h) | 34.04 mph (54.78 km/h) |
| 40 mph (64.37 km/h) | 38.9 mph (62.6 km/h) |
| 45 mph (72.42 km/h) | 43.76 mph (70.43 km/h) |
| 50 mph (80.47 km/h) | 48.63 mph (78.26 km/h) |
| 55 mph (88.51 km/h) | 53.49 mph (86.08 km/h) |
| 60 mph (96.56 km/h) | 58.35 mph (93.91 km/h) |
| 65 mph (104.61 km/h) | 63.21 mph (101.73 km/h) |
| 70 mph (112.65 km/h) | 68.08 mph (109.56 km/h) |
| 75 mph (120.7 km/h) | 72.94 mph (117.38 km/h) |
| 80 mph (128.75 km/h) | 77.8 mph (125.21 km/h) |
| 85 mph (136.79 km/h) | 82.66 mph (133.04 km/h) |
| 90 mph (144.84 km/h) | 87.53 mph (140.86 km/h) |
| 95 mph (152.89 km/h) | 92.39 mph (148.69 km/h) |
| 100 mph (160.93 km/h) | 97.25 mph (156.51 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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