Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/60-18 | 225/45-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.32 (643.2) | 24.97 (634.3) | -0.35 (-8.9) -1.4% |
| Width inches (mm) | 6.1 (155) | 8.86 (225) | 2.76 (70) 45.2% |
| Circum. inches (mm) | 79.55 (2020.67) | 78.45 (1992.71) | -1.1 (-27.96) -1.4% |
| Sidewall Height inches (mm) | 3.66 (93) | 3.99 (101.25) | 0.32 (8.25) 8.9% |
| Revolutions per mile (km) | 796.44 (494.88) | 807.61 (501.83) | 11.18 (6.94) 1.4% |
225/45-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.72 mph (31.74 km/h) |
| 25 mph (40.23 km/h) | 24.65 mph (39.68 km/h) |
| 30 mph (48.28 km/h) | 29.58 mph (47.61 km/h) |
| 35 mph (56.33 km/h) | 34.52 mph (55.55 km/h) |
| 40 mph (64.37 km/h) | 39.45 mph (63.48 km/h) |
| 45 mph (72.42 km/h) | 44.38 mph (71.42 km/h) |
| 50 mph (80.47 km/h) | 49.31 mph (79.35 km/h) |
| 55 mph (88.51 km/h) | 54.24 mph (87.29 km/h) |
| 60 mph (96.56 km/h) | 59.17 mph (95.22 km/h) |
| 65 mph (104.61 km/h) | 64.1 mph (103.16 km/h) |
| 70 mph (112.65 km/h) | 69.03 mph (111.1 km/h) |
| 75 mph (120.7 km/h) | 73.96 mph (119.03 km/h) |
| 80 mph (128.75 km/h) | 78.89 mph (126.97 km/h) |
| 85 mph (136.79 km/h) | 83.82 mph (134.9 km/h) |
| 90 mph (144.84 km/h) | 88.75 mph (142.84 km/h) |
| 95 mph (152.89 km/h) | 93.69 mph (150.77 km/h) |
| 100 mph (160.93 km/h) | 98.62 mph (158.71 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2055 | 2388 | 2571 | 2685 | 2807 | 2895 | 2991 | 3105 | 3262 | 3420 | 3594 | 3734 | 3988 | 4268 | 4487 | 4626 | 4705 | 4994 | 5396 | 6271 |
Better Fuel Economy Factory Ratios Increased Power
