Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 255/35-18 | 245/40-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.03 (635.7) | 24.72 (627.8) | -0.31 (-7.9) -1.2% |
| Width inches (mm) | 10.04 (255) | 9.65 (245) | -0.39 (-10) -3.9% |
| Circum. inches (mm) | 78.63 (1997.11) | 77.65 (1972.29) | -0.98 (-24.82) -1.2% |
| Sidewall Height inches (mm) | 3.51 (89.25) | 3.86 (98) | 0.34 (8.75) 9.8% |
| Revolutions per mile (km) | 805.84 (500.72) | 815.98 (507.02) | 10.14 (6.3) 1.3% |
245/40-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.75 mph (31.79 km/h) |
| 25 mph (40.23 km/h) | 24.69 mph (39.73 km/h) |
| 30 mph (48.28 km/h) | 29.63 mph (47.68 km/h) |
| 35 mph (56.33 km/h) | 34.57 mph (55.63 km/h) |
| 40 mph (64.37 km/h) | 39.5 mph (63.57 km/h) |
| 45 mph (72.42 km/h) | 44.44 mph (71.52 km/h) |
| 50 mph (80.47 km/h) | 49.38 mph (79.47 km/h) |
| 55 mph (88.51 km/h) | 54.32 mph (87.41 km/h) |
| 60 mph (96.56 km/h) | 59.25 mph (95.36 km/h) |
| 65 mph (104.61 km/h) | 64.19 mph (103.31 km/h) |
| 70 mph (112.65 km/h) | 69.13 mph (111.25 km/h) |
| 75 mph (120.7 km/h) | 74.07 mph (119.2 km/h) |
| 80 mph (128.75 km/h) | 79.01 mph (127.15 km/h) |
| 85 mph (136.79 km/h) | 83.94 mph (135.09 km/h) |
| 90 mph (144.84 km/h) | 88.88 mph (143.04 km/h) |
| 95 mph (152.89 km/h) | 93.82 mph (150.99 km/h) |
| 100 mph (160.93 km/h) | 98.76 mph (158.93 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2077 | 2412 | 2598 | 2713 | 2836 | 2925 | 3022 | 3137 | 3296 | 3455 | 3632 | 3773 | 4029 | 4312 | 4533 | 4674 | 4754 | 5045 | 5452 | 6336 |
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