Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/65-18 | 275/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.07 (814.7) | 33.16 (842.2) | 1.08 (27.5) 3.4% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 100.77 (2559.46) | 104.17 (2645.85) | 3.4 (86.39) 3.4% |
| Sidewall Height inches (mm) | 7.04 (178.75) | 7.58 (192.5) | 0.54 (13.75) 7.7% |
| Revolutions per mile (km) | 628.78 (390.71) | 608.25 (377.95) | -20.53 (-12.76) -3.3% |
275/70-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.68 mph (33.27 km/h) |
| 25 mph (40.23 km/h) | 25.84 mph (41.59 km/h) |
| 30 mph (48.28 km/h) | 31.01 mph (49.91 km/h) |
| 35 mph (56.33 km/h) | 36.18 mph (58.23 km/h) |
| 40 mph (64.37 km/h) | 41.35 mph (66.55 km/h) |
| 45 mph (72.42 km/h) | 46.52 mph (74.87 km/h) |
| 50 mph (80.47 km/h) | 51.69 mph (83.18 km/h) |
| 55 mph (88.51 km/h) | 56.86 mph (91.5 km/h) |
| 60 mph (96.56 km/h) | 62.03 mph (99.82 km/h) |
| 65 mph (104.61 km/h) | 67.19 mph (108.14 km/h) |
| 70 mph (112.65 km/h) | 72.36 mph (116.46 km/h) |
| 75 mph (120.7 km/h) | 77.53 mph (124.78 km/h) |
| 80 mph (128.75 km/h) | 82.7 mph (133.09 km/h) |
| 85 mph (136.79 km/h) | 87.87 mph (141.41 km/h) |
| 90 mph (144.84 km/h) | 93.04 mph (149.73 km/h) |
| 95 mph (152.89 km/h) | 98.21 mph (158.05 km/h) |
| 100 mph (160.93 km/h) | 103.38 mph (166.37 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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