Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 205/40-17 | 255/45-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.46 (595.8) | 26.04 (661.3) | 2.58 (65.5) 11% |
| Width inches (mm) | 8.07 (205) | 10.04 (255) | 1.97 (50) 24.4% |
| Circum. inches (mm) | 73.69 (1871.76) | 81.79 (2077.54) | 8.1 (205.77) 11% |
| Sidewall Height inches (mm) | 3.23 (82) | 4.52 (114.75) | 1.29 (32.75) 39.9% |
| Revolutions per mile (km) | 859.8 (534.26) | 774.64 (481.34) | -85.16 (-52.92) -9.9% |
255/45-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.2 mph (35.73 km/h) |
| 25 mph (40.23 km/h) | 27.75 mph (44.66 km/h) |
| 30 mph (48.28 km/h) | 33.3 mph (53.59 km/h) |
| 35 mph (56.33 km/h) | 38.85 mph (62.52 km/h) |
| 40 mph (64.37 km/h) | 44.4 mph (71.45 km/h) |
| 45 mph (72.42 km/h) | 49.95 mph (80.38 km/h) |
| 50 mph (80.47 km/h) | 55.5 mph (89.31 km/h) |
| 55 mph (88.51 km/h) | 61.05 mph (98.24 km/h) |
| 60 mph (96.56 km/h) | 66.6 mph (107.18 km/h) |
| 65 mph (104.61 km/h) | 72.15 mph (116.11 km/h) |
| 70 mph (112.65 km/h) | 77.7 mph (125.04 km/h) |
| 75 mph (120.7 km/h) | 83.25 mph (133.97 km/h) |
| 80 mph (128.75 km/h) | 88.79 mph (142.9 km/h) |
| 85 mph (136.79 km/h) | 94.34 mph (151.83 km/h) |
| 90 mph (144.84 km/h) | 99.89 mph (160.76 km/h) |
| 95 mph (152.89 km/h) | 105.44 mph (169.7 km/h) |
| 100 mph (160.93 km/h) | 110.99 mph (178.63 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1971 | 2290 | 2466 | 2575 | 2693 | 2777 | 2869 | 2978 | 3129 | 3280 | 3448 | 3582 | 3825 | 4094 | 4303 | 4438 | 4513 | 4790 | 5176 | 6015 |
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