Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 225/45-18 | 205/70-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.97 (659.7) | 26.3 (668) | 0.33 (8.3) 1.3% |
| Width inches (mm) | 8.86 (225) | 8.07 (205) | -0.79 (-20) -8.9% |
| Circum. inches (mm) | 81.59 (2072.51) | 82.62 (2098.58) | 1.03 (26.08) 1.3% |
| Sidewall Height inches (mm) | 3.99 (101.25) | 5.65 (143.5) | 1.66 (42.25) 41.7% |
| Revolutions per mile (km) | 776.52 (482.51) | 766.87 (476.51) | -9.65 (-6) -1.2% |
205/70-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.25 mph (32.59 km/h) |
| 25 mph (40.23 km/h) | 25.31 mph (40.74 km/h) |
| 30 mph (48.28 km/h) | 30.38 mph (48.89 km/h) |
| 35 mph (56.33 km/h) | 35.44 mph (57.04 km/h) |
| 40 mph (64.37 km/h) | 40.5 mph (65.18 km/h) |
| 45 mph (72.42 km/h) | 45.57 mph (73.33 km/h) |
| 50 mph (80.47 km/h) | 50.63 mph (81.48 km/h) |
| 55 mph (88.51 km/h) | 55.69 mph (89.63 km/h) |
| 60 mph (96.56 km/h) | 60.75 mph (97.78 km/h) |
| 65 mph (104.61 km/h) | 65.82 mph (105.92 km/h) |
| 70 mph (112.65 km/h) | 70.88 mph (114.07 km/h) |
| 75 mph (120.7 km/h) | 75.94 mph (122.22 km/h) |
| 80 mph (128.75 km/h) | 81.01 mph (130.37 km/h) |
| 85 mph (136.79 km/h) | 86.07 mph (138.52 km/h) |
| 90 mph (144.84 km/h) | 91.13 mph (146.66 km/h) |
| 95 mph (152.89 km/h) | 96.2 mph (154.81 km/h) |
| 100 mph (160.93 km/h) | 101.26 mph (162.96 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1952 | 2267 | 2442 | 2549 | 2666 | 2749 | 2840 | 2948 | 3098 | 3247 | 3413 | 3546 | 3787 | 4053 | 4260 | 4393 | 4468 | 4742 | 5124 | 5954 |
Better Fuel Economy Factory Ratios Increased Power
