Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/75-18 | 275/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.65 (854.7) | 32.07 (814.7) | -1.57 (-40) -4.7% |
| Width inches (mm) | 10.43 (265) | 10.83 (275) | 0.39 (10) 3.8% |
| Circum. inches (mm) | 105.71 (2685.12) | 100.77 (2559.46) | -4.95 (-125.66) -4.7% |
| Sidewall Height inches (mm) | 7.82 (198.75) | 7.04 (178.75) | -0.79 (-20) -10.1% |
| Revolutions per mile (km) | 599.36 (372.42) | 628.78 (390.71) | 29.43 (18.29) 4.9% |
275/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.06 mph (30.68 km/h) |
| 25 mph (40.23 km/h) | 23.83 mph (38.35 km/h) |
| 30 mph (48.28 km/h) | 28.6 mph (46.02 km/h) |
| 35 mph (56.33 km/h) | 33.36 mph (53.69 km/h) |
| 40 mph (64.37 km/h) | 38.13 mph (61.36 km/h) |
| 45 mph (72.42 km/h) | 42.89 mph (69.03 km/h) |
| 50 mph (80.47 km/h) | 47.66 mph (76.7 km/h) |
| 55 mph (88.51 km/h) | 52.43 mph (84.37 km/h) |
| 60 mph (96.56 km/h) | 57.19 mph (92.04 km/h) |
| 65 mph (104.61 km/h) | 61.96 mph (99.71 km/h) |
| 70 mph (112.65 km/h) | 66.72 mph (107.38 km/h) |
| 75 mph (120.7 km/h) | 71.49 mph (115.05 km/h) |
| 80 mph (128.75 km/h) | 76.26 mph (122.72 km/h) |
| 85 mph (136.79 km/h) | 81.02 mph (130.39 km/h) |
| 90 mph (144.84 km/h) | 85.79 mph (138.06 km/h) |
| 95 mph (152.89 km/h) | 90.55 mph (145.73 km/h) |
| 100 mph (160.93 km/h) | 95.32 mph (153.4 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
