Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/85-14 | 185/80-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.38 (670.1) | 26.65 (677) | 0.27 (6.9) 1% |
| Width inches (mm) | 7.28 (185) | 7.28 (185) | 0 (0) 0% |
| Circum. inches (mm) | 82.88 (2105.18) | 83.73 (2126.86) | 0.85 (21.68) 1% |
| Sidewall Height inches (mm) | 6.19 (157.25) | 5.83 (148) | -0.36 (-9.25) -5.9% |
| Revolutions per mile (km) | 764.47 (475.02) | 756.68 (470.18) | -7.79 (-4.84) -1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.21 mph (32.52 km/h) |
| 25 mph (40.23 km/h) | 25.26 mph (40.65 km/h) |
| 30 mph (48.28 km/h) | 30.31 mph (48.78 km/h) |
| 35 mph (56.33 km/h) | 35.36 mph (56.91 km/h) |
| 40 mph (64.37 km/h) | 40.41 mph (65.04 km/h) |
| 45 mph (72.42 km/h) | 45.46 mph (73.17 km/h) |
| 50 mph (80.47 km/h) | 50.51 mph (81.3 km/h) |
| 55 mph (88.51 km/h) | 55.57 mph (89.43 km/h) |
| 60 mph (96.56 km/h) | 60.62 mph (97.56 km/h) |
| 65 mph (104.61 km/h) | 65.67 mph (105.68 km/h) |
| 70 mph (112.65 km/h) | 70.72 mph (113.81 km/h) |
| 75 mph (120.7 km/h) | 75.77 mph (121.94 km/h) |
| 80 mph (128.75 km/h) | 80.82 mph (130.07 km/h) |
| 85 mph (136.79 km/h) | 85.88 mph (138.2 km/h) |
| 90 mph (144.84 km/h) | 90.93 mph (146.33 km/h) |
| 95 mph (152.89 km/h) | 95.98 mph (154.46 km/h) |
| 100 mph (160.93 km/h) | 101.03 mph (162.59 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1926 | 2237 | 2409 | 2516 | 2630 | 2712 | 2802 | 2909 | 3056 | 3204 | 3368 | 3499 | 3736 | 3999 | 4204 | 4335 | 4408 | 4679 | 5056 | 5875 |
Better Fuel Economy Factory Ratios Increased Power
