Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/65-13 | 185/70-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.96 (557.7) | 24.2 (614.6) | 2.24 (56.9) 10.2% |
| Width inches (mm) | 6.89 (175) | 7.28 (185) | 0.39 (10) 5.7% |
| Circum. inches (mm) | 68.98 (1752.07) | 76.02 (1930.82) | 7.04 (178.76) 10.2% |
| Sidewall Height inches (mm) | 4.48 (113.75) | 5.1 (129.5) | 0.62 (15.75) 13.8% |
| Revolutions per mile (km) | 918.54 (570.75) | 833.5 (517.91) | -85.04 (-52.84) -9.3% |
185/70-14 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.04 mph (35.47 km/h) |
| 25 mph (40.23 km/h) | 27.55 mph (44.34 km/h) |
| 30 mph (48.28 km/h) | 33.06 mph (53.21 km/h) |
| 35 mph (56.33 km/h) | 38.57 mph (62.07 km/h) |
| 40 mph (64.37 km/h) | 44.08 mph (70.94 km/h) |
| 45 mph (72.42 km/h) | 49.59 mph (79.81 km/h) |
| 50 mph (80.47 km/h) | 55.1 mph (88.68 km/h) |
| 55 mph (88.51 km/h) | 60.61 mph (97.54 km/h) |
| 60 mph (96.56 km/h) | 66.12 mph (106.41 km/h) |
| 65 mph (104.61 km/h) | 71.63 mph (115.28 km/h) |
| 70 mph (112.65 km/h) | 77.14 mph (124.15 km/h) |
| 75 mph (120.7 km/h) | 82.65 mph (133.02 km/h) |
| 80 mph (128.75 km/h) | 88.16 mph (141.88 km/h) |
| 85 mph (136.79 km/h) | 93.67 mph (150.75 km/h) |
| 90 mph (144.84 km/h) | 99.18 mph (159.62 km/h) |
| 95 mph (152.89 km/h) | 104.69 mph (168.49 km/h) |
| 100 mph (160.93 km/h) | 110.2 mph (177.35 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2121 | 2464 | 2654 | 2771 | 2897 | 2988 | 3087 | 3204 | 3367 | 3529 | 3710 | 3854 | 4116 | 4405 | 4630 | 4775 | 4856 | 5154 | 5569 | 6472 |
Better Fuel Economy Factory Ratios Increased Power
