Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 180/80-14 | 205/65-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.34 (643.6) | 24.49 (622.1) | -0.85 (-21.5) -3.3% |
| Width inches (mm) | 7.09 (180) | 8.07 (205) | 0.98 (25) 13.9% |
| Circum. inches (mm) | 79.6 (2021.93) | 76.94 (1954.38) | -2.66 (-67.54) -3.3% |
| Sidewall Height inches (mm) | 5.67 (144) | 5.25 (133.25) | -0.42 (-10.75) -7.5% |
| Revolutions per mile (km) | 795.94 (494.58) | 823.45 (511.67) | 27.51 (17.09) 3.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.33 mph (31.11 km/h) |
| 25 mph (40.23 km/h) | 24.16 mph (38.89 km/h) |
| 30 mph (48.28 km/h) | 29 mph (46.67 km/h) |
| 35 mph (56.33 km/h) | 33.83 mph (54.45 km/h) |
| 40 mph (64.37 km/h) | 38.66 mph (62.22 km/h) |
| 45 mph (72.42 km/h) | 43.5 mph (70 km/h) |
| 50 mph (80.47 km/h) | 48.33 mph (77.78 km/h) |
| 55 mph (88.51 km/h) | 53.16 mph (85.56 km/h) |
| 60 mph (96.56 km/h) | 58 mph (93.34 km/h) |
| 65 mph (104.61 km/h) | 62.83 mph (101.11 km/h) |
| 70 mph (112.65 km/h) | 67.66 mph (108.89 km/h) |
| 75 mph (120.7 km/h) | 72.49 mph (116.67 km/h) |
| 80 mph (128.75 km/h) | 77.33 mph (124.45 km/h) |
| 85 mph (136.79 km/h) | 82.16 mph (132.22 km/h) |
| 90 mph (144.84 km/h) | 86.99 mph (140 km/h) |
| 95 mph (152.89 km/h) | 91.83 mph (147.78 km/h) |
| 100 mph (160.93 km/h) | 96.66 mph (155.56 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2096 | 2434 | 2622 | 2738 | 2862 | 2952 | 3050 | 3166 | 3326 | 3487 | 3665 | 3808 | 4066 | 4352 | 4574 | 4717 | 4797 | 5092 | 5502 | 6394 |
Better Fuel Economy Factory Ratios Increased Power
