Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/45-18 | 275/40-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.39 (695.7) | 26.66 (677.2) | -0.73 (-18.5) -2.7% |
| Width inches (mm) | 10.43 (265) | 10.83 (275) | 0.39 (10) 3.8% |
| Circum. inches (mm) | 86.05 (2185.61) | 83.76 (2127.49) | -2.29 (-58.12) -2.7% |
| Sidewall Height inches (mm) | 4.69 (119.25) | 4.33 (110) | -0.36 (-9.25) -7.8% |
| Revolutions per mile (km) | 736.34 (457.54) | 756.45 (470.04) | 20.12 (12.5) 2.7% |
275/40-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.47 mph (31.33 km/h) |
| 25 mph (40.23 km/h) | 24.34 mph (39.16 km/h) |
| 30 mph (48.28 km/h) | 29.2 mph (47 km/h) |
| 35 mph (56.33 km/h) | 34.07 mph (54.83 km/h) |
| 40 mph (64.37 km/h) | 38.94 mph (62.66 km/h) |
| 45 mph (72.42 km/h) | 43.8 mph (70.49 km/h) |
| 50 mph (80.47 km/h) | 48.67 mph (78.33 km/h) |
| 55 mph (88.51 km/h) | 53.54 mph (86.16 km/h) |
| 60 mph (96.56 km/h) | 58.4 mph (93.99 km/h) |
| 65 mph (104.61 km/h) | 63.27 mph (101.83 km/h) |
| 70 mph (112.65 km/h) | 68.14 mph (109.66 km/h) |
| 75 mph (120.7 km/h) | 73.01 mph (117.49 km/h) |
| 80 mph (128.75 km/h) | 77.87 mph (125.32 km/h) |
| 85 mph (136.79 km/h) | 82.74 mph (133.16 km/h) |
| 90 mph (144.84 km/h) | 87.61 mph (140.99 km/h) |
| 95 mph (152.89 km/h) | 92.47 mph (148.82 km/h) |
| 100 mph (160.93 km/h) | 97.34 mph (156.66 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1925 | 2236 | 2408 | 2515 | 2630 | 2711 | 2802 | 2908 | 3055 | 3203 | 3367 | 3498 | 3735 | 3998 | 4202 | 4333 | 4407 | 4677 | 5054 | 5873 |
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