Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/55-17 | 245/40-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.31 (668.3) | 24.72 (627.8) | -1.59 (-40.5) -6.1% |
| Width inches (mm) | 8.46 (215) | 9.65 (245) | 1.18 (30) 14% |
| Circum. inches (mm) | 82.66 (2099.53) | 77.65 (1972.29) | -5.01 (-127.23) -6.1% |
| Sidewall Height inches (mm) | 4.66 (118.25) | 3.86 (98) | -0.8 (-20.25) -17.1% |
| Revolutions per mile (km) | 766.53 (476.3) | 815.98 (507.02) | 49.45 (30.73) 6.5% |
245/40-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.79 mph (30.24 km/h) |
| 25 mph (40.23 km/h) | 23.48 mph (37.8 km/h) |
| 30 mph (48.28 km/h) | 28.18 mph (45.35 km/h) |
| 35 mph (56.33 km/h) | 32.88 mph (52.91 km/h) |
| 40 mph (64.37 km/h) | 37.58 mph (60.47 km/h) |
| 45 mph (72.42 km/h) | 42.27 mph (68.03 km/h) |
| 50 mph (80.47 km/h) | 46.97 mph (75.59 km/h) |
| 55 mph (88.51 km/h) | 51.67 mph (83.15 km/h) |
| 60 mph (96.56 km/h) | 56.36 mph (90.71 km/h) |
| 65 mph (104.61 km/h) | 61.06 mph (98.27 km/h) |
| 70 mph (112.65 km/h) | 65.76 mph (105.83 km/h) |
| 75 mph (120.7 km/h) | 70.45 mph (113.39 km/h) |
| 80 mph (128.75 km/h) | 75.15 mph (120.95 km/h) |
| 85 mph (136.79 km/h) | 79.85 mph (128.5 km/h) |
| 90 mph (144.84 km/h) | 84.55 mph (136.06 km/h) |
| 95 mph (152.89 km/h) | 89.24 mph (143.62 km/h) |
| 100 mph (160.93 km/h) | 93.94 mph (151.18 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 |
Better Fuel Economy Factory Ratios Increased Power
