Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/70-18 | 165/70-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.99 (660.2) | 27.09 (688.2) | 1.1 (28) 4.2% |
| Width inches (mm) | 5.71 (145) | 6.5 (165) | 0.79 (20) 13.8% |
| Circum. inches (mm) | 81.66 (2074.08) | 85.12 (2162.04) | 3.46 (87.96) 4.2% |
| Sidewall Height inches (mm) | 4 (101.5) | 4.55 (115.5) | 0.55 (14) 13.8% |
| Revolutions per mile (km) | 775.93 (482.14) | 744.36 (462.52) | -31.57 (-19.62) -4.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.85 mph (33.55 km/h) |
| 25 mph (40.23 km/h) | 26.06 mph (41.94 km/h) |
| 30 mph (48.28 km/h) | 31.27 mph (50.33 km/h) |
| 35 mph (56.33 km/h) | 36.48 mph (58.72 km/h) |
| 40 mph (64.37 km/h) | 41.7 mph (67.1 km/h) |
| 45 mph (72.42 km/h) | 46.91 mph (75.49 km/h) |
| 50 mph (80.47 km/h) | 52.12 mph (83.88 km/h) |
| 55 mph (88.51 km/h) | 57.33 mph (92.27 km/h) |
| 60 mph (96.56 km/h) | 62.54 mph (100.66 km/h) |
| 65 mph (104.61 km/h) | 67.76 mph (109.04 km/h) |
| 70 mph (112.65 km/h) | 72.97 mph (117.43 km/h) |
| 75 mph (120.7 km/h) | 78.18 mph (125.82 km/h) |
| 80 mph (128.75 km/h) | 83.39 mph (134.21 km/h) |
| 85 mph (136.79 km/h) | 88.6 mph (142.6 km/h) |
| 90 mph (144.84 km/h) | 93.82 mph (150.98 km/h) |
| 95 mph (152.89 km/h) | 99.03 mph (159.37 km/h) |
| 100 mph (160.93 km/h) | 104.24 mph (167.76 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1894 | 2201 | 2370 | 2475 | 2587 | 2668 | 2757 | 2862 | 3007 | 3152 | 3313 | 3442 | 3676 | 3934 | 4135 | 4264 | 4337 | 4603 | 4973 | 5780 |
Better Fuel Economy Factory Ratios Increased Power
