Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/70-19.5 | 275/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 34.66 (880.3) | 33.16 (842.2) | -1.5 (-38.1) -4.3% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 108.88 (2765.54) | 104.17 (2645.85) | -4.71 (-119.69) -4.3% |
| Sidewall Height inches (mm) | 7.58 (192.5) | 7.58 (192.5) | 0 (0) 0% |
| Revolutions per mile (km) | 581.93 (361.59) | 608.25 (377.95) | 26.33 (16.36) 4.5% |
275/70-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.13 mph (30.79 km/h) |
| 25 mph (40.23 km/h) | 23.92 mph (38.49 km/h) |
| 30 mph (48.28 km/h) | 28.7 mph (46.19 km/h) |
| 35 mph (56.33 km/h) | 33.49 mph (53.89 km/h) |
| 40 mph (64.37 km/h) | 38.27 mph (61.59 km/h) |
| 45 mph (72.42 km/h) | 43.05 mph (69.29 km/h) |
| 50 mph (80.47 km/h) | 47.84 mph (76.98 km/h) |
| 55 mph (88.51 km/h) | 52.62 mph (84.68 km/h) |
| 60 mph (96.56 km/h) | 57.4 mph (92.38 km/h) |
| 65 mph (104.61 km/h) | 62.19 mph (100.08 km/h) |
| 70 mph (112.65 km/h) | 66.97 mph (107.78 km/h) |
| 75 mph (120.7 km/h) | 71.75 mph (115.48 km/h) |
| 80 mph (128.75 km/h) | 76.54 mph (123.18 km/h) |
| 85 mph (136.79 km/h) | 81.32 mph (130.87 km/h) |
| 90 mph (144.84 km/h) | 86.1 mph (138.57 km/h) |
| 95 mph (152.89 km/h) | 90.89 mph (146.27 km/h) |
| 100 mph (160.93 km/h) | 95.67 mph (153.97 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1548 | 1798 | 1937 | 2022 | 2114 | 2180 | 2253 | 2338 | 2457 | 2575 | 2707 | 2813 | 3004 | 3214 | 3379 | 3484 | 3544 | 3761 | 4064 | 4723 |
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