Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 25/7.5-15 | 225/45-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.08 (636.94) | 22.97 (583.5) | -2.1 (-53.44) -8.4% |
| Width inches (mm) | 7.52 (191) | 8.86 (225) | 1.34 (34) 17.8% |
| Circum. inches (mm) | 78.78 (2001.01) | 72.17 (1833.12) | -6.61 (-167.89) -8.4% |
| Sidewall Height inches (mm) | 5.04 (127.97) | 3.99 (101.25) | -1.05 (-26.72) -20.9% |
| Revolutions per mile (km) | 804.27 (499.75) | 877.93 (545.52) | 73.66 (45.77) 9.2% |
225/45-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.32 mph (29.49 km/h) |
| 25 mph (40.23 km/h) | 22.9 mph (36.86 km/h) |
| 30 mph (48.28 km/h) | 27.48 mph (44.23 km/h) |
| 35 mph (56.33 km/h) | 32.06 mph (51.6 km/h) |
| 40 mph (64.37 km/h) | 36.64 mph (58.97 km/h) |
| 45 mph (72.42 km/h) | 41.22 mph (66.34 km/h) |
| 50 mph (80.47 km/h) | 45.8 mph (73.72 km/h) |
| 55 mph (88.51 km/h) | 50.39 mph (81.09 km/h) |
| 60 mph (96.56 km/h) | 54.97 mph (88.46 km/h) |
| 65 mph (104.61 km/h) | 59.55 mph (95.83 km/h) |
| 70 mph (112.65 km/h) | 64.13 mph (103.2 km/h) |
| 75 mph (120.7 km/h) | 68.71 mph (110.57 km/h) |
| 80 mph (128.75 km/h) | 73.29 mph (117.95 km/h) |
| 85 mph (136.79 km/h) | 77.87 mph (125.32 km/h) |
| 90 mph (144.84 km/h) | 82.45 mph (132.69 km/h) |
| 95 mph (152.89 km/h) | 87.03 mph (140.06 km/h) |
| 100 mph (160.93 km/h) | 91.61 mph (147.43 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2234 | 2595 | 2795 | 2919 | 3052 | 3147 | 3251 | 3375 | 3546 | 3717 | 3907 | 4060 | 4335 | 4639 | 4877 | 5029 | 5115 | 5429 | 5866 | 6817 |
Better Fuel Economy Factory Ratios Increased Power
