Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 275/55-20 | 265/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.91 (810.5) | 32.61 (828.2) | 0.7 (17.7) 2.2% |
| Width inches (mm) | 10.83 (275) | 10.43 (265) | -0.39 (-10) -3.6% |
| Circum. inches (mm) | 100.25 (2546.26) | 102.44 (2601.87) | 2.19 (55.61) 2.2% |
| Sidewall Height inches (mm) | 5.95 (151.25) | 7.3 (185.5) | 1.35 (34.25) 22.6% |
| Revolutions per mile (km) | 632.04 (392.73) | 618.53 (384.34) | -13.51 (-8.39) -2.1% |
265/70-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.44 mph (32.89 km/h) |
| 25 mph (40.23 km/h) | 25.55 mph (41.11 km/h) |
| 30 mph (48.28 km/h) | 30.66 mph (49.33 km/h) |
| 35 mph (56.33 km/h) | 35.76 mph (57.56 km/h) |
| 40 mph (64.37 km/h) | 40.87 mph (65.78 km/h) |
| 45 mph (72.42 km/h) | 45.98 mph (74 km/h) |
| 50 mph (80.47 km/h) | 51.09 mph (82.22 km/h) |
| 55 mph (88.51 km/h) | 56.2 mph (90.45 km/h) |
| 60 mph (96.56 km/h) | 61.31 mph (98.67 km/h) |
| 65 mph (104.61 km/h) | 66.42 mph (106.89 km/h) |
| 70 mph (112.65 km/h) | 71.53 mph (115.11 km/h) |
| 75 mph (120.7 km/h) | 76.64 mph (123.34 km/h) |
| 80 mph (128.75 km/h) | 81.75 mph (131.56 km/h) |
| 85 mph (136.79 km/h) | 86.86 mph (139.78 km/h) |
| 90 mph (144.84 km/h) | 91.97 mph (148 km/h) |
| 95 mph (152.89 km/h) | 97.07 mph (156.23 km/h) |
| 100 mph (160.93 km/h) | 102.18 mph (164.45 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1574 | 1829 | 1969 | 2056 | 2150 | 2217 | 2291 | 2378 | 2498 | 2619 | 2753 | 2860 | 3054 | 3269 | 3436 | 3543 | 3604 | 3825 | 4133 | 4803 |
Better Fuel Economy Factory Ratios Increased Power
