Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/80-12 | 175/70-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.13 (536.8) | 22.65 (575.2) | 1.51 (38.4) 7.2% |
| Width inches (mm) | 5.71 (145) | 6.89 (175) | 1.18 (30) 20.7% |
| Circum. inches (mm) | 66.39 (1686.41) | 71.14 (1807.04) | 4.75 (120.64) 7.2% |
| Sidewall Height inches (mm) | 4.57 (116) | 4.82 (122.5) | 0.26 (6.5) 5.6% |
| Revolutions per mile (km) | 954.3 (592.98) | 890.59 (553.39) | -63.71 (-39.59) -6.7% |
175/70-13 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.43 mph (34.49 km/h) |
| 25 mph (40.23 km/h) | 26.79 mph (43.11 km/h) |
| 30 mph (48.28 km/h) | 32.15 mph (51.73 km/h) |
| 35 mph (56.33 km/h) | 37.5 mph (60.36 km/h) |
| 40 mph (64.37 km/h) | 42.86 mph (68.98 km/h) |
| 45 mph (72.42 km/h) | 48.22 mph (77.6 km/h) |
| 50 mph (80.47 km/h) | 53.58 mph (86.22 km/h) |
| 55 mph (88.51 km/h) | 58.93 mph (94.85 km/h) |
| 60 mph (96.56 km/h) | 64.29 mph (103.47 km/h) |
| 65 mph (104.61 km/h) | 69.65 mph (112.09 km/h) |
| 70 mph (112.65 km/h) | 75.01 mph (120.71 km/h) |
| 75 mph (120.7 km/h) | 80.37 mph (129.34 km/h) |
| 80 mph (128.75 km/h) | 85.72 mph (137.96 km/h) |
| 85 mph (136.79 km/h) | 91.08 mph (146.58 km/h) |
| 90 mph (144.84 km/h) | 96.44 mph (155.2 km/h) |
| 95 mph (152.89 km/h) | 101.8 mph (163.82 km/h) |
| 100 mph (160.93 km/h) | 107.15 mph (172.45 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
