Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 245/50-17 | 255/45-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.65 (676.8) | 26.04 (661.3) | -0.61 (-15.5) -2.3% |
| Width inches (mm) | 9.65 (245) | 10.04 (255) | 0.39 (10) 4.1% |
| Circum. inches (mm) | 83.71 (2126.23) | 81.79 (2077.54) | -1.92 (-48.69) -2.3% |
| Sidewall Height inches (mm) | 4.82 (122.5) | 4.52 (114.75) | -0.31 (-7.75) -6.3% |
| Revolutions per mile (km) | 756.9 (470.32) | 774.64 (481.34) | 17.74 (11.02) 2.3% |
255/45-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.54 mph (31.45 km/h) |
| 25 mph (40.23 km/h) | 24.43 mph (39.31 km/h) |
| 30 mph (48.28 km/h) | 29.31 mph (47.17 km/h) |
| 35 mph (56.33 km/h) | 34.2 mph (55.04 km/h) |
| 40 mph (64.37 km/h) | 39.08 mph (62.9 km/h) |
| 45 mph (72.42 km/h) | 43.97 mph (70.76 km/h) |
| 50 mph (80.47 km/h) | 48.85 mph (78.62 km/h) |
| 55 mph (88.51 km/h) | 53.74 mph (86.49 km/h) |
| 60 mph (96.56 km/h) | 58.63 mph (94.35 km/h) |
| 65 mph (104.61 km/h) | 63.51 mph (102.21 km/h) |
| 70 mph (112.65 km/h) | 68.4 mph (110.07 km/h) |
| 75 mph (120.7 km/h) | 73.28 mph (117.94 km/h) |
| 80 mph (128.75 km/h) | 78.17 mph (125.8 km/h) |
| 85 mph (136.79 km/h) | 83.05 mph (133.66 km/h) |
| 90 mph (144.84 km/h) | 87.94 mph (141.52 km/h) |
| 95 mph (152.89 km/h) | 92.82 mph (149.39 km/h) |
| 100 mph (160.93 km/h) | 97.71 mph (157.25 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 |
Better Fuel Economy Factory Ratios Increased Power
