Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/30-21 | 275/40-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.5 (698.4) | 27.66 (702.6) | 0.17 (4.2) 0.6% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 86.38 (2194.09) | 86.9 (2207.28) | 0.52 (13.19) 0.6% |
| Sidewall Height inches (mm) | 3.25 (82.5) | 4.33 (110) | 1.08 (27.5) 33.3% |
| Revolutions per mile (km) | 733.49 (455.77) | 729.11 (453.04) | -4.38 (-2.72) -0.6% |
275/40-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.12 mph (32.38 km/h) |
| 25 mph (40.23 km/h) | 25.15 mph (40.48 km/h) |
| 30 mph (48.28 km/h) | 30.18 mph (48.57 km/h) |
| 35 mph (56.33 km/h) | 35.21 mph (56.67 km/h) |
| 40 mph (64.37 km/h) | 40.24 mph (64.76 km/h) |
| 45 mph (72.42 km/h) | 45.27 mph (72.86 km/h) |
| 50 mph (80.47 km/h) | 50.3 mph (80.95 km/h) |
| 55 mph (88.51 km/h) | 55.33 mph (89.05 km/h) |
| 60 mph (96.56 km/h) | 60.36 mph (97.14 km/h) |
| 65 mph (104.61 km/h) | 65.39 mph (105.24 km/h) |
| 70 mph (112.65 km/h) | 70.42 mph (113.33 km/h) |
| 75 mph (120.7 km/h) | 75.45 mph (121.43 km/h) |
| 80 mph (128.75 km/h) | 80.48 mph (129.52 km/h) |
| 85 mph (136.79 km/h) | 85.51 mph (137.62 km/h) |
| 90 mph (144.84 km/h) | 90.54 mph (145.71 km/h) |
| 95 mph (152.89 km/h) | 95.57 mph (153.81 km/h) |
| 100 mph (160.93 km/h) | 100.6 mph (161.9 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1855 | 2155 | 2321 | 2424 | 2534 | 2613 | 2700 | 2803 | 2945 | 3087 | 3245 | 3371 | 3600 | 3853 | 4050 | 4177 | 4248 | 4508 | 4872 | 5661 |
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