Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/30-18 | 215/45-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.55 (598.2) | 24.62 (625.3) | 1.07 (27.1) 4.5% |
| Width inches (mm) | 9.25 (235) | 8.46 (215) | -0.79 (-20) -8.5% |
| Circum. inches (mm) | 73.99 (1879.3) | 77.34 (1964.44) | 3.35 (85.14) 4.5% |
| Sidewall Height inches (mm) | 2.78 (70.5) | 3.81 (96.75) | 1.03 (26.25) 37.2% |
| Revolutions per mile (km) | 856.35 (532.11) | 819.24 (509.05) | -37.11 (-23.06) -4.3% |
215/45-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.91 mph (33.65 km/h) |
| 25 mph (40.23 km/h) | 26.13 mph (42.06 km/h) |
| 30 mph (48.28 km/h) | 31.36 mph (50.47 km/h) |
| 35 mph (56.33 km/h) | 36.59 mph (58.88 km/h) |
| 40 mph (64.37 km/h) | 41.81 mph (67.29 km/h) |
| 45 mph (72.42 km/h) | 47.04 mph (75.7 km/h) |
| 50 mph (80.47 km/h) | 52.27 mph (84.11 km/h) |
| 55 mph (88.51 km/h) | 57.49 mph (92.52 km/h) |
| 60 mph (96.56 km/h) | 62.72 mph (100.94 km/h) |
| 65 mph (104.61 km/h) | 67.94 mph (109.35 km/h) |
| 70 mph (112.65 km/h) | 73.17 mph (117.76 km/h) |
| 75 mph (120.7 km/h) | 78.4 mph (126.17 km/h) |
| 80 mph (128.75 km/h) | 83.62 mph (134.58 km/h) |
| 85 mph (136.79 km/h) | 88.85 mph (142.99 km/h) |
| 90 mph (144.84 km/h) | 94.08 mph (151.4 km/h) |
| 95 mph (152.89 km/h) | 99.3 mph (159.81 km/h) |
| 100 mph (160.93 km/h) | 104.53 mph (168.23 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
