Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/80-15 | 205/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.65 (677) | 25.49 (647.5) | -1.16 (-29.5) -4.4% |
| Width inches (mm) | 7.28 (185) | 8.07 (205) | 0.79 (20) 10.8% |
| Circum. inches (mm) | 83.73 (2126.86) | 80.09 (2034.18) | -3.65 (-92.68) -4.4% |
| Sidewall Height inches (mm) | 5.83 (148) | 5.25 (133.25) | -0.58 (-14.75) -10% |
| Revolutions per mile (km) | 756.68 (470.18) | 791.15 (491.6) | 34.47 (21.42) 4.6% |
205/65-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.13 mph (30.78 km/h) |
| 25 mph (40.23 km/h) | 23.91 mph (38.48 km/h) |
| 30 mph (48.28 km/h) | 28.69 mph (46.18 km/h) |
| 35 mph (56.33 km/h) | 33.47 mph (53.87 km/h) |
| 40 mph (64.37 km/h) | 38.26 mph (61.57 km/h) |
| 45 mph (72.42 km/h) | 43.04 mph (69.26 km/h) |
| 50 mph (80.47 km/h) | 47.82 mph (76.96 km/h) |
| 55 mph (88.51 km/h) | 52.6 mph (84.66 km/h) |
| 60 mph (96.56 km/h) | 57.39 mph (92.35 km/h) |
| 65 mph (104.61 km/h) | 62.17 mph (100.05 km/h) |
| 70 mph (112.65 km/h) | 66.95 mph (107.75 km/h) |
| 75 mph (120.7 km/h) | 71.73 mph (115.44 km/h) |
| 80 mph (128.75 km/h) | 76.51 mph (123.14 km/h) |
| 85 mph (136.79 km/h) | 81.3 mph (130.83 km/h) |
| 90 mph (144.84 km/h) | 86.08 mph (138.53 km/h) |
| 95 mph (152.89 km/h) | 90.86 mph (146.23 km/h) |
| 100 mph (160.93 km/h) | 95.64 mph (153.92 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2013 | 2339 | 2519 | 2630 | 2750 | 2836 | 2930 | 3041 | 3196 | 3350 | 3521 | 3658 | 3907 | 4181 | 4395 | 4532 | 4609 | 4892 | 5286 | 6143 |
Better Fuel Economy Factory Ratios Increased Power
