Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/80-18 | 275/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 35.32 (897.2) | 33.16 (842.2) | -2.17 (-55) -6.1% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 110.97 (2818.64) | 104.17 (2645.85) | -6.8 (-172.79) -6.1% |
| Sidewall Height inches (mm) | 8.66 (220) | 7.58 (192.5) | -1.08 (-27.5) -12.5% |
| Revolutions per mile (km) | 570.97 (354.78) | 608.25 (377.95) | 37.29 (23.17) 6.5% |
275/70-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.77 mph (30.21 km/h) |
| 25 mph (40.23 km/h) | 23.47 mph (37.77 km/h) |
| 30 mph (48.28 km/h) | 28.16 mph (45.32 km/h) |
| 35 mph (56.33 km/h) | 32.85 mph (52.87 km/h) |
| 40 mph (64.37 km/h) | 37.55 mph (60.43 km/h) |
| 45 mph (72.42 km/h) | 42.24 mph (67.98 km/h) |
| 50 mph (80.47 km/h) | 46.93 mph (75.53 km/h) |
| 55 mph (88.51 km/h) | 51.63 mph (83.09 km/h) |
| 60 mph (96.56 km/h) | 56.32 mph (90.64 km/h) |
| 65 mph (104.61 km/h) | 61.02 mph (98.19 km/h) |
| 70 mph (112.65 km/h) | 65.71 mph (105.75 km/h) |
| 75 mph (120.7 km/h) | 70.4 mph (113.3 km/h) |
| 80 mph (128.75 km/h) | 75.1 mph (120.86 km/h) |
| 85 mph (136.79 km/h) | 79.79 mph (128.41 km/h) |
| 90 mph (144.84 km/h) | 84.48 mph (135.96 km/h) |
| 95 mph (152.89 km/h) | 89.18 mph (143.52 km/h) |
| 100 mph (160.93 km/h) | 93.87 mph (151.07 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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