Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/65-16 | 275/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.07 (763.9) | 32.07 (814.7) | 2 (50.8) 6.7% |
| Width inches (mm) | 10.83 (275) | 10.83 (275) | 0 (0) 0% |
| Circum. inches (mm) | 94.48 (2399.86) | 100.77 (2559.46) | 6.28 (159.59) 6.7% |
| Sidewall Height inches (mm) | 7.04 (178.75) | 7.04 (178.75) | 0 (0) 0% |
| Revolutions per mile (km) | 670.6 (416.69) | 628.78 (390.71) | -41.81 (-25.98) -6.2% |
275/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.33 mph (34.33 km/h) |
| 25 mph (40.23 km/h) | 26.66 mph (42.91 km/h) |
| 30 mph (48.28 km/h) | 32 mph (51.49 km/h) |
| 35 mph (56.33 km/h) | 37.33 mph (60.07 km/h) |
| 40 mph (64.37 km/h) | 42.66 mph (68.65 km/h) |
| 45 mph (72.42 km/h) | 47.99 mph (77.24 km/h) |
| 50 mph (80.47 km/h) | 53.33 mph (85.82 km/h) |
| 55 mph (88.51 km/h) | 58.66 mph (94.4 km/h) |
| 60 mph (96.56 km/h) | 63.99 mph (102.98 km/h) |
| 65 mph (104.61 km/h) | 69.32 mph (111.56 km/h) |
| 70 mph (112.65 km/h) | 74.66 mph (120.15 km/h) |
| 75 mph (120.7 km/h) | 79.99 mph (128.73 km/h) |
| 80 mph (128.75 km/h) | 85.32 mph (137.31 km/h) |
| 85 mph (136.79 km/h) | 90.65 mph (145.89 km/h) |
| 90 mph (144.84 km/h) | 95.99 mph (154.47 km/h) |
| 95 mph (152.89 km/h) | 101.32 mph (163.06 km/h) |
| 100 mph (160.93 km/h) | 106.65 mph (171.64 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1600 | 1859 | 2002 | 2090 | 2186 | 2254 | 2329 | 2417 | 2540 | 2662 | 2799 | 2907 | 3105 | 3323 | 3493 | 3602 | 3663 | 3888 | 4201 | 4882 |
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