Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/70-17 | 275/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.16 (816.8) | 33.16 (842.2) | 1 (25.4) 3.1% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 101.03 (2566.05) | 104.17 (2645.85) | 3.14 (79.8) 3.1% |
| Sidewall Height inches (mm) | 7.58 (192.5) | 7.58 (192.5) | 0 (0) 0% |
| Revolutions per mile (km) | 627.17 (389.7) | 608.25 (377.95) | -18.91 (-11.75) -3% |
275/70-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.62 mph (33.19 km/h) |
| 25 mph (40.23 km/h) | 25.78 mph (41.48 km/h) |
| 30 mph (48.28 km/h) | 30.93 mph (49.78 km/h) |
| 35 mph (56.33 km/h) | 36.09 mph (58.08 km/h) |
| 40 mph (64.37 km/h) | 41.24 mph (66.38 km/h) |
| 45 mph (72.42 km/h) | 46.4 mph (74.67 km/h) |
| 50 mph (80.47 km/h) | 51.55 mph (82.97 km/h) |
| 55 mph (88.51 km/h) | 56.71 mph (91.27 km/h) |
| 60 mph (96.56 km/h) | 61.87 mph (99.56 km/h) |
| 65 mph (104.61 km/h) | 67.02 mph (107.86 km/h) |
| 70 mph (112.65 km/h) | 72.18 mph (116.16 km/h) |
| 75 mph (120.7 km/h) | 77.33 mph (124.45 km/h) |
| 80 mph (128.75 km/h) | 82.49 mph (132.75 km/h) |
| 85 mph (136.79 km/h) | 87.64 mph (141.05 km/h) |
| 90 mph (144.84 km/h) | 92.8 mph (149.35 km/h) |
| 95 mph (152.89 km/h) | 97.95 mph (157.64 km/h) |
| 100 mph (160.93 km/h) | 103.11 mph (165.94 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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