Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/70-18 | 165/70-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.99 (660.2) | 25.09 (637.4) | -0.9 (-22.8) -3.5% |
| Width inches (mm) | 5.71 (145) | 6.5 (165) | 0.79 (20) 13.8% |
| Circum. inches (mm) | 81.66 (2074.08) | 78.84 (2002.45) | -2.82 (-71.63) -3.5% |
| Sidewall Height inches (mm) | 4 (101.5) | 4.55 (115.5) | 0.55 (14) 13.8% |
| Revolutions per mile (km) | 775.93 (482.14) | 803.69 (499.39) | 27.76 (17.25) 3.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.31 mph (31.08 km/h) |
| 25 mph (40.23 km/h) | 24.14 mph (38.84 km/h) |
| 30 mph (48.28 km/h) | 28.96 mph (46.61 km/h) |
| 35 mph (56.33 km/h) | 33.79 mph (54.38 km/h) |
| 40 mph (64.37 km/h) | 38.62 mph (62.15 km/h) |
| 45 mph (72.42 km/h) | 43.45 mph (69.92 km/h) |
| 50 mph (80.47 km/h) | 48.27 mph (77.69 km/h) |
| 55 mph (88.51 km/h) | 53.1 mph (85.46 km/h) |
| 60 mph (96.56 km/h) | 57.93 mph (93.23 km/h) |
| 65 mph (104.61 km/h) | 62.76 mph (100.99 km/h) |
| 70 mph (112.65 km/h) | 67.58 mph (108.76 km/h) |
| 75 mph (120.7 km/h) | 72.41 mph (116.53 km/h) |
| 80 mph (128.75 km/h) | 77.24 mph (124.3 km/h) |
| 85 mph (136.79 km/h) | 82.06 mph (132.07 km/h) |
| 90 mph (144.84 km/h) | 86.89 mph (139.84 km/h) |
| 95 mph (152.89 km/h) | 91.72 mph (147.61 km/h) |
| 100 mph (160.93 km/h) | 96.55 mph (155.38 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2045 | 2376 | 2559 | 2672 | 2794 | 2881 | 2976 | 3090 | 3246 | 3403 | 3577 | 3716 | 3969 | 4247 | 4465 | 4604 | 4682 | 4969 | 5370 | 6240 |
Better Fuel Economy Factory Ratios Increased Power
