Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/75-16 | 205/70-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.93 (683.9) | 26.3 (668) | -0.63 (-15.9) -2.3% |
| Width inches (mm) | 7.28 (185) | 8.07 (205) | 0.79 (20) 10.8% |
| Circum. inches (mm) | 84.59 (2148.54) | 82.62 (2098.58) | -1.97 (-49.95) -2.3% |
| Sidewall Height inches (mm) | 5.46 (138.75) | 5.65 (143.5) | 0.19 (4.75) 3.4% |
| Revolutions per mile (km) | 749.04 (465.43) | 766.87 (476.51) | 17.83 (11.08) 2.4% |
205/70-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.54 mph (31.44 km/h) |
| 25 mph (40.23 km/h) | 24.42 mph (39.3 km/h) |
| 30 mph (48.28 km/h) | 29.3 mph (47.16 km/h) |
| 35 mph (56.33 km/h) | 34.19 mph (55.02 km/h) |
| 40 mph (64.37 km/h) | 39.07 mph (62.88 km/h) |
| 45 mph (72.42 km/h) | 43.95 mph (70.74 km/h) |
| 50 mph (80.47 km/h) | 48.84 mph (78.6 km/h) |
| 55 mph (88.51 km/h) | 53.72 mph (86.46 km/h) |
| 60 mph (96.56 km/h) | 58.61 mph (94.32 km/h) |
| 65 mph (104.61 km/h) | 63.49 mph (102.18 km/h) |
| 70 mph (112.65 km/h) | 68.37 mph (110.04 km/h) |
| 75 mph (120.7 km/h) | 73.26 mph (117.89 km/h) |
| 80 mph (128.75 km/h) | 78.14 mph (125.75 km/h) |
| 85 mph (136.79 km/h) | 83.02 mph (133.61 km/h) |
| 90 mph (144.84 km/h) | 87.91 mph (141.47 km/h) |
| 95 mph (152.89 km/h) | 92.79 mph (149.33 km/h) |
| 100 mph (160.93 km/h) | 97.68 mph (157.19 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
