Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/65-14 | 185/70-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.42 (544.1) | 24.2 (614.6) | 2.78 (70.5) 13% |
| Width inches (mm) | 5.71 (145) | 7.28 (185) | 1.57 (40) 27.6% |
| Circum. inches (mm) | 67.3 (1709.34) | 76.02 (1930.82) | 8.72 (221.48) 13% |
| Sidewall Height inches (mm) | 3.71 (94.25) | 5.1 (129.5) | 1.39 (35.25) 37.4% |
| Revolutions per mile (km) | 941.5 (585.02) | 833.5 (517.91) | -108 (-67.11) -11.5% |
185/70-14 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.59 mph (36.36 km/h) |
| 25 mph (40.23 km/h) | 28.24 mph (45.45 km/h) |
| 30 mph (48.28 km/h) | 33.89 mph (54.54 km/h) |
| 35 mph (56.33 km/h) | 39.54 mph (63.63 km/h) |
| 40 mph (64.37 km/h) | 45.18 mph (72.71 km/h) |
| 45 mph (72.42 km/h) | 50.83 mph (81.8 km/h) |
| 50 mph (80.47 km/h) | 56.48 mph (90.89 km/h) |
| 55 mph (88.51 km/h) | 62.13 mph (99.98 km/h) |
| 60 mph (96.56 km/h) | 67.77 mph (109.07 km/h) |
| 65 mph (104.61 km/h) | 73.42 mph (118.16 km/h) |
| 70 mph (112.65 km/h) | 79.07 mph (127.25 km/h) |
| 75 mph (120.7 km/h) | 84.72 mph (136.34 km/h) |
| 80 mph (128.75 km/h) | 90.37 mph (145.43 km/h) |
| 85 mph (136.79 km/h) | 96.01 mph (154.52 km/h) |
| 90 mph (144.84 km/h) | 101.66 mph (163.61 km/h) |
| 95 mph (152.89 km/h) | 107.31 mph (172.7 km/h) |
| 100 mph (160.93 km/h) | 112.96 mph (181.79 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
