Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/65-15 | 175/65-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.42 (569.5) | 23.96 (608.5) | 1.54 (39) 6.8% |
| Width inches (mm) | 5.71 (145) | 6.89 (175) | 1.18 (30) 20.7% |
| Circum. inches (mm) | 70.44 (1789.14) | 75.26 (1911.66) | 4.82 (122.52) 6.8% |
| Sidewall Height inches (mm) | 3.71 (94.25) | 4.48 (113.75) | 0.77 (19.5) 20.7% |
| Revolutions per mile (km) | 899.51 (558.93) | 841.86 (523.1) | -57.65 (-35.82) -6.4% |
175/65-15 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.37 mph (34.39 km/h) |
| 25 mph (40.23 km/h) | 26.71 mph (42.99 km/h) |
| 30 mph (48.28 km/h) | 32.05 mph (51.59 km/h) |
| 35 mph (56.33 km/h) | 37.4 mph (60.18 km/h) |
| 40 mph (64.37 km/h) | 42.74 mph (68.78 km/h) |
| 45 mph (72.42 km/h) | 48.08 mph (77.38 km/h) |
| 50 mph (80.47 km/h) | 53.42 mph (85.98 km/h) |
| 55 mph (88.51 km/h) | 58.77 mph (94.58 km/h) |
| 60 mph (96.56 km/h) | 64.11 mph (103.17 km/h) |
| 65 mph (104.61 km/h) | 69.45 mph (111.77 km/h) |
| 70 mph (112.65 km/h) | 74.79 mph (120.37 km/h) |
| 75 mph (120.7 km/h) | 80.14 mph (128.97 km/h) |
| 80 mph (128.75 km/h) | 85.48 mph (137.56 km/h) |
| 85 mph (136.79 km/h) | 90.82 mph (146.16 km/h) |
| 90 mph (144.84 km/h) | 96.16 mph (154.76 km/h) |
| 95 mph (152.89 km/h) | 101.51 mph (163.36 km/h) |
| 100 mph (160.93 km/h) | 106.85 mph (171.96 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2142 | 2489 | 2680 | 2799 | 2926 | 3018 | 3118 | 3236 | 3400 | 3565 | 3747 | 3893 | 4157 | 4449 | 4677 | 4823 | 4905 | 5205 | 5625 | 6536 |
Better Fuel Economy Factory Ratios Increased Power
