Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/65-17 | 265/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.03 (737.3) | 31.56 (801.7) | 2.54 (64.4) 8.7% |
| Width inches (mm) | 9.25 (235) | 10.43 (265) | 1.18 (30) 12.8% |
| Circum. inches (mm) | 91.19 (2316.3) | 99.16 (2518.61) | 7.97 (202.32) 8.7% |
| Sidewall Height inches (mm) | 6.01 (152.75) | 6.78 (172.25) | 0.77 (19.5) 12.8% |
| Revolutions per mile (km) | 694.79 (431.72) | 638.98 (397.04) | -55.81 (-34.68) -8% |
265/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.75 mph (35 km/h) |
| 25 mph (40.23 km/h) | 27.18 mph (43.75 km/h) |
| 30 mph (48.28 km/h) | 32.62 mph (52.5 km/h) |
| 35 mph (56.33 km/h) | 38.06 mph (61.25 km/h) |
| 40 mph (64.37 km/h) | 43.49 mph (70 km/h) |
| 45 mph (72.42 km/h) | 48.93 mph (78.75 km/h) |
| 50 mph (80.47 km/h) | 54.37 mph (87.5 km/h) |
| 55 mph (88.51 km/h) | 59.8 mph (96.25 km/h) |
| 60 mph (96.56 km/h) | 65.24 mph (105 km/h) |
| 65 mph (104.61 km/h) | 70.68 mph (113.74 km/h) |
| 70 mph (112.65 km/h) | 76.11 mph (122.49 km/h) |
| 75 mph (120.7 km/h) | 81.55 mph (131.24 km/h) |
| 80 mph (128.75 km/h) | 86.99 mph (139.99 km/h) |
| 85 mph (136.79 km/h) | 92.42 mph (148.74 km/h) |
| 90 mph (144.84 km/h) | 97.86 mph (157.49 km/h) |
| 95 mph (152.89 km/h) | 103.3 mph (166.24 km/h) |
| 100 mph (160.93 km/h) | 108.73 mph (174.99 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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