Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/65-20 | 265/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.56 (852.5) | 31.56 (801.7) | -2 (-50.8) -6% |
| Width inches (mm) | 10.43 (265) | 10.43 (265) | 0 (0) 0% |
| Circum. inches (mm) | 105.44 (2678.21) | 99.16 (2518.61) | -6.28 (-159.59) -6% |
| Sidewall Height inches (mm) | 6.78 (172.25) | 6.78 (172.25) | 0 (0) 0% |
| Revolutions per mile (km) | 600.9 (373.38) | 638.98 (397.04) | 38.08 (23.66) 6.3% |
265/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.81 mph (30.27 km/h) |
| 25 mph (40.23 km/h) | 23.51 mph (37.84 km/h) |
| 30 mph (48.28 km/h) | 28.21 mph (45.4 km/h) |
| 35 mph (56.33 km/h) | 32.91 mph (52.97 km/h) |
| 40 mph (64.37 km/h) | 37.62 mph (60.54 km/h) |
| 45 mph (72.42 km/h) | 42.32 mph (68.11 km/h) |
| 50 mph (80.47 km/h) | 47.02 mph (75.67 km/h) |
| 55 mph (88.51 km/h) | 51.72 mph (83.24 km/h) |
| 60 mph (96.56 km/h) | 56.42 mph (90.81 km/h) |
| 65 mph (104.61 km/h) | 61.13 mph (98.37 km/h) |
| 70 mph (112.65 km/h) | 65.83 mph (105.94 km/h) |
| 75 mph (120.7 km/h) | 70.53 mph (113.51 km/h) |
| 80 mph (128.75 km/h) | 75.23 mph (121.08 km/h) |
| 85 mph (136.79 km/h) | 79.93 mph (128.64 km/h) |
| 90 mph (144.84 km/h) | 84.64 mph (136.21 km/h) |
| 95 mph (152.89 km/h) | 89.34 mph (143.78 km/h) |
| 100 mph (160.93 km/h) | 94.04 mph (151.34 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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