Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 185/45-15 | 175/70-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.56 (547.5) | 22.65 (575.2) | 1.09 (27.7) 5.1% |
| Width inches (mm) | 7.28 (185) | 6.89 (175) | -0.39 (-10) -5.4% |
| Circum. inches (mm) | 67.72 (1720.02) | 71.14 (1807.04) | 3.43 (87.02) 5.1% |
| Sidewall Height inches (mm) | 3.28 (83.25) | 4.82 (122.5) | 1.55 (39.25) 47.1% |
| Revolutions per mile (km) | 935.65 (581.39) | 890.59 (553.39) | -45.06 (-28) -4.8% |
175/70-13 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.01 mph (33.82 km/h) |
| 25 mph (40.23 km/h) | 26.26 mph (42.27 km/h) |
| 30 mph (48.28 km/h) | 31.52 mph (50.72 km/h) |
| 35 mph (56.33 km/h) | 36.77 mph (59.18 km/h) |
| 40 mph (64.37 km/h) | 42.02 mph (67.63 km/h) |
| 45 mph (72.42 km/h) | 47.28 mph (76.08 km/h) |
| 50 mph (80.47 km/h) | 52.53 mph (84.54 km/h) |
| 55 mph (88.51 km/h) | 57.78 mph (92.99 km/h) |
| 60 mph (96.56 km/h) | 63.04 mph (101.45 km/h) |
| 65 mph (104.61 km/h) | 68.29 mph (109.9 km/h) |
| 70 mph (112.65 km/h) | 73.54 mph (118.35 km/h) |
| 75 mph (120.7 km/h) | 78.79 mph (126.81 km/h) |
| 80 mph (128.75 km/h) | 84.05 mph (135.26 km/h) |
| 85 mph (136.79 km/h) | 89.3 mph (143.72 km/h) |
| 90 mph (144.84 km/h) | 94.55 mph (152.17 km/h) |
| 95 mph (152.89 km/h) | 99.81 mph (160.62 km/h) |
| 100 mph (160.93 km/h) | 105.06 mph (169.08 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2266 | 2633 | 2835 | 2961 | 3096 | 3192 | 3298 | 3424 | 3597 | 3771 | 3964 | 4118 | 4398 | 4706 | 4947 | 5102 | 5189 | 5507 | 5950 | 6915 |
Better Fuel Economy Factory Ratios Increased Power
