Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/55-20 | 265/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.48 (799.5) | 31.56 (801.7) | 0.09 (2.2) 0.3% |
| Width inches (mm) | 10.43 (265) | 10.43 (265) | 0 (0) 0% |
| Circum. inches (mm) | 98.89 (2511.7) | 99.16 (2518.61) | 0.27 (6.91) 0.3% |
| Sidewall Height inches (mm) | 5.74 (145.75) | 6.78 (172.25) | 1.04 (26.5) 18.2% |
| Revolutions per mile (km) | 640.74 (398.14) | 638.98 (397.04) | -1.76 (-1.09) -0.3% |
265/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.06 mph (32.28 km/h) |
| 25 mph (40.23 km/h) | 25.07 mph (40.34 km/h) |
| 30 mph (48.28 km/h) | 30.08 mph (48.41 km/h) |
| 35 mph (56.33 km/h) | 35.1 mph (56.48 km/h) |
| 40 mph (64.37 km/h) | 40.11 mph (64.55 km/h) |
| 45 mph (72.42 km/h) | 45.12 mph (72.62 km/h) |
| 50 mph (80.47 km/h) | 50.14 mph (80.69 km/h) |
| 55 mph (88.51 km/h) | 55.15 mph (88.76 km/h) |
| 60 mph (96.56 km/h) | 60.17 mph (96.83 km/h) |
| 65 mph (104.61 km/h) | 65.18 mph (104.9 km/h) |
| 70 mph (112.65 km/h) | 70.19 mph (112.96 km/h) |
| 75 mph (120.7 km/h) | 75.21 mph (121.03 km/h) |
| 80 mph (128.75 km/h) | 80.22 mph (129.1 km/h) |
| 85 mph (136.79 km/h) | 85.23 mph (137.17 km/h) |
| 90 mph (144.84 km/h) | 90.25 mph (145.24 km/h) |
| 95 mph (152.89 km/h) | 95.26 mph (153.31 km/h) |
| 100 mph (160.93 km/h) | 100.28 mph (161.38 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1626 | 1889 | 2034 | 2124 | 2221 | 2290 | 2366 | 2456 | 2581 | 2706 | 2844 | 2955 | 3155 | 3377 | 3550 | 3660 | 3723 | 3951 | 4269 | 4961 |
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