Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/70-18 | 275/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.06 (814.2) | 33.16 (842.2) | 1.1 (28) 3.4% |
| Width inches (mm) | 10.04 (255) | 10.83 (275) | 0.79 (20) 7.8% |
| Circum. inches (mm) | 100.7 (2557.88) | 104.17 (2645.85) | 3.46 (87.96) 3.4% |
| Sidewall Height inches (mm) | 7.03 (178.5) | 7.58 (192.5) | 0.55 (14) 7.8% |
| Revolutions per mile (km) | 629.17 (390.95) | 608.25 (377.95) | -20.92 (-13) -3.3% |
275/70-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.69 mph (33.29 km/h) |
| 25 mph (40.23 km/h) | 25.86 mph (41.62 km/h) |
| 30 mph (48.28 km/h) | 31.03 mph (49.94 km/h) |
| 35 mph (56.33 km/h) | 36.2 mph (58.26 km/h) |
| 40 mph (64.37 km/h) | 41.38 mph (66.59 km/h) |
| 45 mph (72.42 km/h) | 46.55 mph (74.91 km/h) |
| 50 mph (80.47 km/h) | 51.72 mph (83.23 km/h) |
| 55 mph (88.51 km/h) | 56.89 mph (91.56 km/h) |
| 60 mph (96.56 km/h) | 62.06 mph (99.88 km/h) |
| 65 mph (104.61 km/h) | 67.24 mph (108.2 km/h) |
| 70 mph (112.65 km/h) | 72.41 mph (116.53 km/h) |
| 75 mph (120.7 km/h) | 77.58 mph (124.85 km/h) |
| 80 mph (128.75 km/h) | 82.75 mph (133.18 km/h) |
| 85 mph (136.79 km/h) | 87.92 mph (141.5 km/h) |
| 90 mph (144.84 km/h) | 93.1 mph (149.82 km/h) |
| 95 mph (152.89 km/h) | 98.27 mph (158.15 km/h) |
| 100 mph (160.93 km/h) | 103.44 mph (166.47 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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