Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 190/70-15 | 225/45-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.47 (647) | 24.97 (634.3) | -0.5 (-12.7) -2% |
| Width inches (mm) | 7.48 (190) | 8.86 (225) | 1.38 (35) 18.4% |
| Circum. inches (mm) | 80.02 (2032.61) | 78.45 (1992.71) | -1.57 (-39.9) -2% |
| Sidewall Height inches (mm) | 5.24 (133) | 3.99 (101.25) | -1.25 (-31.75) -23.9% |
| Revolutions per mile (km) | 791.76 (491.98) | 807.61 (501.83) | 15.85 (9.85) 2% |
225/45-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.61 mph (31.56 km/h) |
| 25 mph (40.23 km/h) | 24.51 mph (39.44 km/h) |
| 30 mph (48.28 km/h) | 29.41 mph (47.33 km/h) |
| 35 mph (56.33 km/h) | 34.31 mph (55.22 km/h) |
| 40 mph (64.37 km/h) | 39.21 mph (63.11 km/h) |
| 45 mph (72.42 km/h) | 44.12 mph (71 km/h) |
| 50 mph (80.47 km/h) | 49.02 mph (78.89 km/h) |
| 55 mph (88.51 km/h) | 53.92 mph (86.78 km/h) |
| 60 mph (96.56 km/h) | 58.82 mph (94.67 km/h) |
| 65 mph (104.61 km/h) | 63.72 mph (102.55 km/h) |
| 70 mph (112.65 km/h) | 68.63 mph (110.44 km/h) |
| 75 mph (120.7 km/h) | 73.53 mph (118.33 km/h) |
| 80 mph (128.75 km/h) | 78.43 mph (126.22 km/h) |
| 85 mph (136.79 km/h) | 83.33 mph (134.11 km/h) |
| 90 mph (144.84 km/h) | 88.23 mph (142 km/h) |
| 95 mph (152.89 km/h) | 93.14 mph (149.89 km/h) |
| 100 mph (160.93 km/h) | 98.04 mph (157.78 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
