Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 260/70-17 | 275/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.33 (795.8) | 32.07 (814.7) | 0.74 (18.9) 2.4% |
| Width inches (mm) | 10.24 (260) | 10.83 (275) | 0.59 (15) 5.8% |
| Circum. inches (mm) | 98.43 (2500.08) | 100.77 (2559.46) | 2.34 (59.38) 2.4% |
| Sidewall Height inches (mm) | 7.17 (182) | 7.04 (178.75) | -0.13 (-3.25) -1.8% |
| Revolutions per mile (km) | 643.72 (399.99) | 628.78 (390.71) | -14.93 (-9.28) -2.3% |
275/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.47 mph (32.95 km/h) |
| 25 mph (40.23 km/h) | 25.59 mph (41.19 km/h) |
| 30 mph (48.28 km/h) | 30.71 mph (49.43 km/h) |
| 35 mph (56.33 km/h) | 35.83 mph (57.66 km/h) |
| 40 mph (64.37 km/h) | 40.95 mph (65.9 km/h) |
| 45 mph (72.42 km/h) | 46.07 mph (74.14 km/h) |
| 50 mph (80.47 km/h) | 51.19 mph (82.38 km/h) |
| 55 mph (88.51 km/h) | 56.31 mph (90.62 km/h) |
| 60 mph (96.56 km/h) | 61.42 mph (98.85 km/h) |
| 65 mph (104.61 km/h) | 66.54 mph (107.09 km/h) |
| 70 mph (112.65 km/h) | 71.66 mph (115.33 km/h) |
| 75 mph (120.7 km/h) | 76.78 mph (123.57 km/h) |
| 80 mph (128.75 km/h) | 81.9 mph (131.81 km/h) |
| 85 mph (136.79 km/h) | 87.02 mph (140.04 km/h) |
| 90 mph (144.84 km/h) | 92.14 mph (148.28 km/h) |
| 95 mph (152.89 km/h) | 97.26 mph (156.52 km/h) |
| 100 mph (160.93 km/h) | 102.37 mph (164.76 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 |
Better Fuel Economy Factory Ratios Increased Power
