Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 270/80-18 | 265/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 35.01 (889.2) | 31.56 (801.7) | -3.44 (-87.5) -9.8% |
| Width inches (mm) | 10.63 (270) | 10.43 (265) | -0.2 (-5) -1.9% |
| Circum. inches (mm) | 109.98 (2793.5) | 99.16 (2518.61) | -10.82 (-274.89) -9.8% |
| Sidewall Height inches (mm) | 8.5 (216) | 6.78 (172.25) | -1.72 (-43.75) -20.3% |
| Revolutions per mile (km) | 576.1 (357.97) | 638.98 (397.04) | 62.88 (39.07) 10.9% |
265/65-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.03 mph (29.02 km/h) |
| 25 mph (40.23 km/h) | 22.54 mph (36.27 km/h) |
| 30 mph (48.28 km/h) | 27.05 mph (43.53 km/h) |
| 35 mph (56.33 km/h) | 31.56 mph (50.78 km/h) |
| 40 mph (64.37 km/h) | 36.06 mph (58.04 km/h) |
| 45 mph (72.42 km/h) | 40.57 mph (65.29 km/h) |
| 50 mph (80.47 km/h) | 45.08 mph (72.55 km/h) |
| 55 mph (88.51 km/h) | 49.59 mph (79.8 km/h) |
| 60 mph (96.56 km/h) | 54.1 mph (87.06 km/h) |
| 65 mph (104.61 km/h) | 58.6 mph (94.31 km/h) |
| 70 mph (112.65 km/h) | 63.11 mph (101.57 km/h) |
| 75 mph (120.7 km/h) | 67.62 mph (108.82 km/h) |
| 80 mph (128.75 km/h) | 72.13 mph (116.08 km/h) |
| 85 mph (136.79 km/h) | 76.64 mph (123.33 km/h) |
| 90 mph (144.84 km/h) | 81.14 mph (130.59 km/h) |
| 95 mph (152.89 km/h) | 85.65 mph (137.84 km/h) |
| 100 mph (160.93 km/h) | 90.16 mph (145.1 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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