Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/30-20 | 215/45-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.08 (637) | 24.62 (625.3) | -0.46 (-11.7) -1.8% |
| Width inches (mm) | 8.46 (215) | 8.46 (215) | 0 (0) 0% |
| Circum. inches (mm) | 78.79 (2001.19) | 77.34 (1964.44) | -1.45 (-36.76) -1.8% |
| Sidewall Height inches (mm) | 2.54 (64.5) | 3.81 (96.75) | 1.27 (32.25) 50% |
| Revolutions per mile (km) | 804.19 (499.7) | 819.24 (509.05) | 15.05 (9.35) 1.9% |
215/45-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.63 mph (31.6 km/h) |
| 25 mph (40.23 km/h) | 24.54 mph (39.49 km/h) |
| 30 mph (48.28 km/h) | 29.45 mph (47.39 km/h) |
| 35 mph (56.33 km/h) | 34.36 mph (55.29 km/h) |
| 40 mph (64.37 km/h) | 39.27 mph (63.19 km/h) |
| 45 mph (72.42 km/h) | 44.17 mph (71.09 km/h) |
| 50 mph (80.47 km/h) | 49.08 mph (78.99 km/h) |
| 55 mph (88.51 km/h) | 53.99 mph (86.89 km/h) |
| 60 mph (96.56 km/h) | 58.9 mph (94.79 km/h) |
| 65 mph (104.61 km/h) | 63.81 mph (102.69 km/h) |
| 70 mph (112.65 km/h) | 68.71 mph (110.59 km/h) |
| 75 mph (120.7 km/h) | 73.62 mph (118.48 km/h) |
| 80 mph (128.75 km/h) | 78.53 mph (126.38 km/h) |
| 85 mph (136.79 km/h) | 83.44 mph (134.28 km/h) |
| 90 mph (144.84 km/h) | 88.35 mph (142.18 km/h) |
| 95 mph (152.89 km/h) | 93.26 mph (150.08 km/h) |
| 100 mph (160.93 km/h) | 98.16 mph (157.98 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2085 | 2422 | 2608 | 2724 | 2848 | 2936 | 3034 | 3149 | 3309 | 3469 | 3646 | 3788 | 4045 | 4329 | 4551 | 4693 | 4773 | 5066 | 5474 | 6361 |
Better Fuel Economy Factory Ratios Increased Power
