Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/70-17 | 145/45-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.99 (634.8) | 22.14 (562.3) | -2.85 (-72.5) -11.4% |
| Width inches (mm) | 5.71 (145) | 5.71 (145) | 0 (0) 0% |
| Circum. inches (mm) | 78.52 (1994.28) | 69.55 (1766.52) | -8.97 (-227.77) -11.4% |
| Sidewall Height inches (mm) | 4 (101.5) | 2.57 (65.25) | -1.43 (-36.25) -35.7% |
| Revolutions per mile (km) | 806.98 (501.43) | 911.03 (566.08) | 104.05 (64.65) 12.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 17.72 mph (28.51 km/h) |
| 25 mph (40.23 km/h) | 22.14 mph (35.64 km/h) |
| 30 mph (48.28 km/h) | 26.57 mph (42.77 km/h) |
| 35 mph (56.33 km/h) | 31 mph (49.89 km/h) |
| 40 mph (64.37 km/h) | 35.43 mph (57.02 km/h) |
| 45 mph (72.42 km/h) | 39.86 mph (64.15 km/h) |
| 50 mph (80.47 km/h) | 44.29 mph (71.28 km/h) |
| 55 mph (88.51 km/h) | 48.72 mph (78.4 km/h) |
| 60 mph (96.56 km/h) | 53.15 mph (85.53 km/h) |
| 65 mph (104.61 km/h) | 57.58 mph (92.66 km/h) |
| 70 mph (112.65 km/h) | 62.01 mph (99.79 km/h) |
| 75 mph (120.7 km/h) | 66.43 mph (106.92 km/h) |
| 80 mph (128.75 km/h) | 70.86 mph (114.04 km/h) |
| 85 mph (136.79 km/h) | 75.29 mph (121.17 km/h) |
| 90 mph (144.84 km/h) | 79.72 mph (128.3 km/h) |
| 95 mph (152.89 km/h) | 84.15 mph (135.43 km/h) |
| 100 mph (160.93 km/h) | 88.58 mph (142.55 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2318 | 2693 | 2900 | 3029 | 3167 | 3265 | 3374 | 3502 | 3680 | 3857 | 4055 | 4213 | 4499 | 4814 | 5061 | 5219 | 5308 | 5633 | 6087 | 7074 |
Better Fuel Economy Factory Ratios Increased Power
